CN116797095A - River basin water ecological safety assessment method, electronic equipment and storage medium - Google Patents
River basin water ecological safety assessment method, electronic equipment and storage medium Download PDFInfo
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Abstract
The application discloses a watershed water ecological safety assessment method, electronic equipment and a storage medium. The method comprises the steps of obtaining river basin ecological environment data; determining an evaluation index system according to the river basin ecological environment data; respectively determining the index weight corresponding to each physiological safety evaluation index in the evaluation index system; determining an ecological safety index according to the river basin ecological environment data and the index weight; and determining a river basin supervision strategy according to the ecological safety index. The scheme provided by the application can improve the reliability and the accuracy of the ecological safety assessment of the watershed water and improve the intelligent level of the watershed supervision.
Description
Technical Field
The present application relates generally to the field of ecological environmental supervision technology. More particularly, the application relates to a watershed water ecological safety assessment method, electronic equipment and a storage medium.
Background
At present, the prediction and early warning method for the watershed water environment safety is gradually studied deeply, but the study for the watershed water ecological safety assessment is relatively weak. The prior art can only carry out qualitative evaluation, lacks an evaluation method aiming at the ecological safety of the water in the river basin, can only obtain rough evaluation conclusion, has poor reliability and accuracy of the conclusion, lacks an intelligent visualization system aiming at the ecological safety evaluation of the water in the river basin, and cannot popularize and apply the technical system for the ecological safety evaluation of the water in the wider river basin.
In view of the foregoing, it is desirable to provide a method for evaluating ecological safety of water in a river basin so as to improve reliability and accuracy of the ecological safety evaluation of water in the river basin and improve intelligent supervision level of the river basin.
Disclosure of Invention
In order to solve at least one or more technical problems as mentioned above, the application provides a watershed water ecological safety assessment method, electronic equipment and storage medium, wherein the watershed water ecological safety assessment method can improve the reliability and the accuracy of watershed water ecological safety assessment and improve the intelligent supervision level of a watershed.
In a first aspect, the present application provides a watershed water ecological safety assessment method, comprising: acquiring river basin ecological environment data; constructing an evaluation index system according to the river basin ecological environment data; respectively determining the index weight corresponding to each physiological safety evaluation index in the evaluation index system; determining an ecological safety index according to the river basin ecological environment data and the index weight; and determining a river basin supervision strategy according to the ecological safety index.
In some embodiments, constructing an assessment metric system from the basin ecological environment data comprises: determining a river basin type according to the river basin ecological environment data, wherein the river basin type comprises an ecological protection type, an economic development type and a balance type; and matching the ecological safety evaluation indexes according to the drainage basin types to form an evaluation index system.
In some embodiments, the assessment metrics system includes a solution layer, a factor layer, and a metrics layer; the determining of the index weight corresponding to each physiological safety evaluation index in the evaluation index system comprises the following steps: respectively determining a first index weight corresponding to each physiological safety evaluation index in the scheme layer; respectively determining a second index weight corresponding to each physiological safety evaluation index in the factor layer; and respectively determining a third index weight corresponding to each physiological safety evaluation index in the index layer.
In some embodiments, determining the first indicator weight corresponding to each of the physiological security assessment indicators in the solution layer includes: acquiring each first investigation diversity corresponding to each physiological safety evaluation index of the scheme layer; determining each first index score corresponding to each physiological safety evaluation index of the scheme layer according to each first investigation score diversity; and determining a first index weight corresponding to the current ecological safety evaluation index of the scheme layer according to the first index score corresponding to the current ecological safety evaluation index of the scheme layer, the index number of the scheme layer and each first index score.
In some embodiments, determining the second index weight corresponding to each of the physiological security assessment indexes in the factor layer includes: acquiring each second investigation scoring set corresponding to each physiological safety evaluation index of the factor layer; assigning a score to each second index corresponding to each physiological safety evaluation index of each second investigation-assignment diversity-determining factor layer; and determining second index weights corresponding to the current ecological safety evaluation indexes of the factor layers according to the second index scores corresponding to the current ecological safety evaluation indexes of the factor layers and the index number of the factor layers.
In some embodiments, determining the third indicator weight corresponding to each of the physiological safety assessment indicators in the indicator layer includes: acquiring each third investigation scoring set corresponding to each physiological safety evaluation index of the index layer; determining each third index score corresponding to each physiological safety evaluation index of the index layer according to each third investigation score diversity; and determining a third index weight corresponding to the current ecological safety evaluation index of the index layer according to the third index score corresponding to the current ecological safety evaluation index of the index layer, the index number of the index layer and each third index score.
In some embodiments, determining the ecological safety index from the basin ecological environment data and the index weight comprises: determining a target relative weight according to the first index weight, the second index weight and the third index weight, wherein the target relative weight is the weight of the ecological safety evaluation index of the index layer relative to the ecological safety evaluation index of the scheme layer corresponding to the index layer; respectively determining index grading values corresponding to each ecological safety evaluation index of the index layer according to the river basin ecological environment data; determining a scheme layer score value corresponding to each physiological safety evaluation index of the scheme layer according to the target relative weight and each index score value; and determining the ecological safety index according to the score value of each scheme layer and the first index weight corresponding to each ecological safety evaluation index in the scheme layer.
In some embodiments, determining the river basin supervision policy from the ecological security index comprises: determining ecological safety classification according to the ecological safety index and a preset classification range; and determining a river basin supervision strategy according to the ecological security classification.
A second aspect of the present application provides an electronic device, comprising:
a processor; and a memory having executable code stored thereon that, when executed by the processor, causes the processor to perform the method as described above.
A third aspect of the application provides a non-transitory machine-readable storage medium having stored thereon executable code which, when executed by a processor of an electronic device, causes the processor to perform the method as described above.
The technical scheme provided by the application can comprise the following beneficial effects:
the application provides an innovative watershed water ecological safety assessment method, electronic equipment and a storage medium. Specifically, the method and the system can dynamically match the evaluation index system according to the development status of different waterbasins by acquiring the waterbasin ecological environment data and constructing the evaluation index system according to the waterbasin ecological environment data, thereby being beneficial to improving the reliability of the waterbasin ecological safety evaluation.
In addition, the method and the system accurately evaluate the ecological safety of the river basin water through the ecological safety indexes by respectively determining the index weight corresponding to each ecological safety evaluation index in the evaluation index system and determining the ecological safety index according to the ecological environment data and the index weight of the river basin, so that the river basin water ecological environment protection and restoration management are carried out by accurately matching the river basin supervision strategy, the accuracy of the river basin water ecological safety evaluation is improved, and the intelligent supervision level of the river basin is improved.
In general, the intelligent assessment method and the intelligent supervision system realize intelligent assessment of the ecological safety of the river basin water, can effectively improve the reliability and the accuracy of the ecological safety assessment of the river basin water, and improve the intelligent supervision level of the river basin.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the application are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 illustrates an exemplary flow chart of a watershed water ecological safety assessment method according to some embodiments of the application;
FIG. 2 illustrates an exemplary flow chart of a watershed water ecological safety assessment method according to further embodiments of the present application;
FIG. 3 illustrates an exemplary flow chart of a watershed water ecological safety assessment method according to further embodiments of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. For simplicity and clarity of illustration, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements. Furthermore, the application has been set forth in numerous specific details in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein may be practiced without these specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure the embodiments described herein. Moreover, this description should not be taken as limiting the scope of the embodiments described herein. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be understood that the possible terms "first" or "second" and the like in the claims, specification and drawings of the present disclosure are used for distinguishing between different objects and not for describing a particular sequential order. The terms "comprises" and "comprising" when used in the specification and claims of the present application are taken to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification and claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present specification and claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
The prediction early warning method for the watershed water environment safety is gradually studied deeply, but the study on the watershed water ecological safety assessment is relatively weak. The prior art can only carry out qualitative evaluation, lacks an evaluation method aiming at the ecological safety of the water in the river basin, can only obtain rough evaluation conclusion, has poor reliability and accuracy of the conclusion, lacks an intelligent visualization system aiming at the ecological safety evaluation of the water in the river basin, and cannot popularize and apply the technical system for the ecological safety evaluation of the water in the wider river basin.
In view of the foregoing, it is desirable to provide a method for evaluating ecological safety of water in a river basin so as to improve reliability and accuracy of the ecological safety evaluation of water in the river basin and improve intelligent supervision level of the river basin.
Specific embodiments of the present application are described in detail below with reference to the accompanying drawings.
FIG. 1 illustrates an exemplary flow chart of a basin water ecological safety assessment method in accordance with some embodiments of the present application. Referring to fig. 1, the river basin water ecological security assessment method shown in the embodiment of the application may include:
in step S101, river basin ecological environment data is acquired. In the embodiment of the present application, the aforementioned river basin ecological environment data may include, but is not limited to, socioeconomic data, water environment quality data, water ecological quality data, regional remote sensing data, and ecosystem service function data.
The socioeconomic data described above may include, but is not limited to, regional demographics, socioeconomic status, water resource utilization, point source pollution status, and the like.
First, the regional demographics described above may include, but are not limited to, basin demographics and demographics trends. The current state of the river basin population comprises the contents of annual general population data, average population density, population composition (agricultural population, non-agricultural population), town rate and the like in the river basin. The population trend includes the variation of the total population number and population density of the watershed in a plurality of years, and the annual average growth rate of the population number in a plurality of years, the population number in towns and the population number in rural areas is counted.
In addition, the socioeconomic status described above may include, but is not limited to, current watershed economies and trends in economic change. The current state of the river basin economy comprises the contents of annual domestic production total value, three-production (agriculture, industry and third industry) total production value, river basin average GDP, average annual income, urban average annual income, rural average annual income and the like.
In addition, the water resource utilization conditions described above may include, but are not limited to, basin water resource utilization overall conditions and hydraulic engineering construction conditions. The general water resource utilization conditions of the watershed comprise the average rainfall capacity of the watershed for many years, the total water resource, the total industrial water in the watershed, the total domestic water, the total irrigation water, the water resource occupation amount of people, the total water supply amount of the watershed and the like. The hydraulic engineering construction conditions comprise the contents of reservoir construction quantity, hydropower station construction quantity, gate construction quantity, pump station construction quantity, dykes and dams construction quantity and the like.
Furthermore, the above-described point source pollution conditions may include, but are not limited to, industrial enterprise pollution emissions, town domestic pollutant emissions, and large scale farming pollution sources. The pollution emission conditions of the industrial enterprises comprise the quantity of the industrial enterprises above in scale, the type of the enterprises, the COD emission amount in the river basin, the total phosphorus emission amount, the ammonia nitrogen emission amount, the total nitrogen emission amount and the like. The urban living pollutant discharge conditions comprise the contents of domestic sewage discharge, urban living COD annual discharge, total phosphorus annual discharge, ammonia nitrogen annual discharge, total nitrogen annual discharge, urban living garbage annual discharge and the like. The condition of the pollution source of the large-scale cultivation comprises the number and scale of cultivation plants in the watershed, the annual discharge of COD of the large-scale cultivation, the annual discharge of total phosphorus, the annual discharge of ammonia nitrogen, the annual discharge of total nitrogen and the like. COD can refer to chemical oxygen demand and is an index for evaluating the content of organic pollutants in water.
Furthermore, the above-mentioned non-point source pollution conditions may include, but are not limited to, rural life pollution conditions, plantation surface pollution conditions, dispersion culture pollution conditions, and aquaculture pollution conditions. The rural domestic pollution conditions comprise rural domestic sewage discharge, rural COD annual discharge, total phosphorus annual discharge, ammonia nitrogen annual discharge, total nitrogen annual discharge, domestic sewage treatment modes, rural domestic garbage annual discharge and the like. The pollution conditions of the planting surface comprise the areas of watershed cultivation (paddy field area, dry land area and garden area), the ammonia nitrogen emission, total phosphorus emission and the like generated by agricultural planting surface sources. The pollution conditions of the dispersed cultivation comprise the content of the cultivation amount of the dispersed livestock and poultry in the region, the annual emission amount of COD (chemical oxygen demand) of the dispersed cultivation, the annual emission amount of total phosphorus, the annual emission amount of ammonia nitrogen, the annual emission amount of total nitrogen and the like. The aquaculture pollution conditions comprise aquaculture amount, aquaculture COD annual emission amount, total phosphorus annual emission amount, ammonia nitrogen annual emission amount, total nitrogen annual emission amount and the like in the region.
The water environment quality data can include, but is not limited to, the current water environment quality state, years of water quality change trend and the like. The current water environment quality state can include, but is not limited to, the positions of reservoirs and other monitoring sections, water quality targets, monitoring frequencies, evaluation indexes and standards, current annual water quality monitoring analysis results, current annual water pollution conditions, monitoring results of concentrated drinking water source sites, comprehensive nutrition state indexes of reservoirs, the positions of the monitoring sections of the storage rivers, monitoring frequencies, water quality targets, water quality monitoring analysis results and the like. In addition, the years of water quality change trend can include monitoring the monitoring result of the section water quality, the concentration of pollutants (chemical oxygen demand, ammonia nitrogen, total phosphorus and total nitrogen) in a reservoir area, the change condition of the pollutants (annual change rate), the concentration and change condition of pollutants at the downstream of the reservoir area, the concentration and change condition of pollutants at the upstream and downstream of the reservoir area before and after water storage, and the like.
The water ecological quality data described above may include, but is not limited to, phytoplankton data, zooplankton data, benthonic animal data, aquatic vascular bundle plant data, and fish data. The phytoplankton data comprise the algae species number, species distribution, density, biomass, biodiversity index and the like of each monitoring section. Zooplankton data include zooplankton species numbers, species distribution, density and biomass, biodiversity index, etc. for each monitored section. Benthonic animal data comprises benthonic animal species number, species distribution, density and biomass, biodiversity index and the like of each monitoring section. Shui Shengwei the tube bundle plant data includes the data of the number of aquatic tube bundle plant species, species distribution, aquatic plant coverage, density and biomass, biodiversity index, etc. of each monitored section. The fish data comprise the data of the species number, species distribution, density and biomass, biodiversity index, region system composition, feeding habit, inhabitation habit, spawning type, fishery resource type and distribution of each monitoring section.
The above-mentioned regional remote sensing data may include, but is not limited to, river basin land coverage, river basin vegetation coverage and natural shoreline remote sensing survey data. The river basin land coverage condition comprises data such as land utilization types (including forest land, agricultural land, grassland, bare land, construction land, ecological land and the like) areas, land utilization type proportion change condition and the like in the river basin for a plurality of years. The river basin vegetation coverage includes data such as normalized vegetation index (NDVI) and Enhanced Vegetation Index (EVI) for recent years in the river basin. The natural shoreline remote sensing investigation data comprise national land investigation data, remote sensing data, reservoir shore circumference, total area of the shore zone, natural shore zone area, non-natural shore zone area, natural shore zone ecosystem type and duty ratio of the regional shore zone, non-natural shore zone ecosystem land type and duty ratio of the regional shore zone, and the like of the recent years in the current domain.
It will be appreciated that the above-mentioned socioeconomic data, water environment quality data, water ecology quality data and regional remote sensing data may be collected by collecting statistics such as annual certificates, national economy and social development statistics, accessing through the internet of things, accessing through existing platform data, capturing through internet data, manually monitoring and/or accessing through satellite data, etc. It will be appreciated that in practical applications, the data acquisition mode needs to be determined according to practical application conditions, and the present application is not limited in this respect.
The ecosystem service function data described above may include, but is not limited to, soil erosion susceptibility assessment data and water conservation assessment data. The water conservation evaluation data may include, but is not limited to, total water conservation amount, canopy water conservation cut-off amount, vegetation type, leaf area index, maximum cut-off amount, vegetation coverage, etc. of the recent years in the water flow.
The soil erosion sensitivity evaluation data may be determined from rainfall erosion evaluation data, soil corrosiveness evaluation data, gradient slope length evaluation data, biological measure evaluation data, engineering measure evaluation data, and cultivation measure evaluation data.
Illustratively, the rainfall erosion evaluation data described above can be determined by the following formulas one and two:
equation one: r=a×f+b;
formula II:
wherein mth represents month, P mth Represents the monthly precipitation, P represents the annual precipitation, a and b are climate constants, respectively, the climate constants depend on the climate conditions, R represents the rainfall erosion evaluation data, and F represents the precipitation evaluation data.
Illustratively, the above soil corrosiveness evaluation data can be determined by the following formula three:
and (3) a formula III:
wherein S is 1 Representing the sand content of soil, S 2 Represents the soil particle content, S 4 Represents the cosmid content, O C Represents the organic carbon content, S 3 =1 to S1/100, k represents soil corrosiveness evaluation data.
Illustratively, the slope length evaluation data described above may be determined by the following equation four:
equation four:
wherein LS represents slope length evaluation data, L represents a slope length factor, S represents a slope length factor, lambda represents a slope length, and alpha represents a slope.
Illustratively, the above-described biometric measure evaluation data may be confirmed by the following equation five:
formula five:
wherein C represents biological measure evaluation data, C v Representing vegetation coverage.
The engineering measure evaluation data E mainly reflects the processing conditions of the surface engineering, such as the impact of flattening treatment, compaction treatment and other structures on soil erosion. When the engineering does not have any protective measures, the E can take the value of 1, and after the engineering is finished and the measures such as leveling, tamping, slope protection and greening are carried out, the E can take the value of any value between 0.5 and 0.8 according to the actual application condition.
The above-mentioned cultivation measure evaluation data T mainly reflects a cultivation mode, and may take a value of 0.5 when cultivation is performed on a lateral slope, and a value of 1 when cultivation is performed on a downhill slope.
The above soil erosion sensitivity evaluation data may be equivalent to an annual average soil erosion modulus M, which may be determined by the following equation six, for example:
formula six: m=r×k×ls×c×e×t
It will be appreciated that the above description of the manner of determining the soil erosion susceptibility evaluation data is merely exemplary, and that in actual practice, the manner of determining the soil erosion susceptibility evaluation data is determined in accordance with the actual application, the application is not limited in this respect.
In step S102, an evaluation index system is constructed from the river basin ecological environment data. The water ecological safety index system can comprehensively consider the aspects of water ecological health, functional stability, sustainability and the like, adopts the socioeconomic index to represent the change reason of the water ecological environment caused by the human socioeconomic activity, adopts the water ecological health index to describe the actual condition of the water ecological system under the driving of pollution pressure, adopts the functional importance index of the water ecological service to describe the functional condition of the water ecological system, and adopts the regulation and control management index to reflect the regulation and control of the socioeconomic development and the improvement effect of the water quality and the water ecology of human beings.
The socioeconomic performance metrics described above can be analyzed from three performance metrics, population, social and economic, and river basin pollution load, river basin water quality and river basin water volume. Population indicators include population number, population density, natural population growth rate, population migration in and out number, etc. in conventional statistics. Social indicators such as arable area, town land area, resource development levels, etc., may be used to determine the level of social development within a domain. The economic index can be used for reflecting the economic development level and the economic activity intensity of the river basin, including three-yield proportion, unit GDP water consumption, human-average GDP, industrial and agricultural total yield value and the like. The river basin pollution load, the river basin water quality and the river basin water quantity are main modes for influencing the river basin water quality by human activities, and comprise a COD load quantity in unit area, an ammonia nitrogen load quantity in unit area, a surface source total phosphorus load quantity in unit area, a main storage river COD concentration, a main storage river ammonia nitrogen concentration, a unit storage river water quantity and the like.
The water ecology health index can comprise two indexes of water quality and water ecology. The water quality index comprises indexes such as dissolved oxygen, total nitrogen, total phosphorus, permanganate index, ammonia nitrogen, transparency, suspended matters, chlorophyll a and the like. The water ecology index comprises indexes such as phytoplankton biomass, zooplankton diversity index and the like in a community level.
The ecological service function indexes can comprise indexes such as drinking water service function, biological habitat service, interception and purification function, ecological support of human landscape function water and the like.
The regulation and control management indexes are mainly embodied in three aspects of economic policies, department policies and environmental policies, and can be characterized by indexes such as environmental protection fund investment, pollution control, industrial structure adjustment, ecological construction and supervision capacity construction.
In step S103, an index weight corresponding to each of the physiological safety evaluation indexes in the evaluation index system is determined respectively. According to the embodiment of the application, the index weight corresponding to each physiological safety evaluation index in the evaluation index system can be respectively determined by referring to the evaluation parameters of the evaluation personnel according to the actual situation of the river basin.
In step S104, an ecological safety index is determined according to the river basin ecological environment data and the index weight. In the embodiment of the application, the ecological safety index is used for describing the ecological safety degree of the river basin so as to evaluate the level of the ecological condition of the water in the river basin.
In step S105, a river basin supervision policy is determined according to the ecological security index. After the ecological safety degree is judged according to the ecological safety degree number, different river basin supervision strategies can be adopted according to different degrees so as to carry out targeted remediation on the ecological safety of the river basin.
According to the method, the evaluation index system is constructed according to the river basin ecological environment data, so that the evaluation index system can be dynamically matched according to the development status of different river basins, and the reliability of the river basin water ecological safety evaluation is improved. In addition, the method and the system accurately evaluate the ecological safety of the river basin water through the ecological safety indexes by respectively determining the index weight corresponding to each ecological safety evaluation index in the evaluation index system and determining the ecological safety index according to the ecological environment data and the index weight of the river basin, so that the river basin water ecological environment protection and restoration management are carried out by accurately matching the river basin supervision strategy, the accuracy of the river basin water ecological safety evaluation is improved, and the intelligent supervision level of the river basin is improved. In general, the intelligent assessment method and the intelligent supervision system realize intelligent assessment of the ecological safety of the river basin water, can effectively improve the reliability and the accuracy of the ecological safety assessment of the river basin water, and improve the intelligent supervision level of the river basin.
In some embodiments, the drainage basin type may be determined first, then the ecological safety assessment indicators are matched according to the drainage basin type to form an assessment indicator system, and an indicator weight of each ecological safety assessment indicator in the assessment indicator system is calculated. The formation process of the evaluation index system and the calculation process of the index weight will be described in detail below with reference to the flowchart shown in fig. 2.
Fig. 2 is a flowchart illustrating an exemplary method for evaluating the ecological safety of water in a river basin according to other embodiments of the present application, referring to fig. 2, the method for evaluating the ecological safety of water in a river basin according to the embodiment of the present application may include:
in step S201, a basin type is determined from the basin ecological environment data. In embodiments of the present application, the basin types may include, but are not limited to, ecologically protected, economically developed, and balanced.
The period of the implementation of the water ecological protection work can be judged according to the river basin ecological environment data. By way of example, assuming that most of the water quality indexes in the river basin ecological environment data do not reach the standard, the water quality indexes are poor, and the pollution control degree is low, the early stage of the implementation of the water ecological protection work can be judged. Assuming that most of the water quality indexes in the river basin ecological environment data reach the standard, the water quality indexes are common, and the pollution control degree is medium, the water quality indexes can be judged to be the middle stage of the implementation of the water ecological protection work. Assuming that only sporadic water quality indexes in the river basin ecological environment data do not reach the standard, the water ecological indexes are good, and the pollution control degree is high, the water ecological protection work implementation later stage can be judged.
The ecological protection type water ecological protection method is suitable for the early stage of regional water ecological protection work implementation, the water ecological protection at the stage is the key point of regional development, and the weight of the water ecological health index and the number of evaluation indexes can be increased according to actual conditions.
In addition, the economic development type water ecological protection system is suitable for the later stage of regional water ecological protection work implementation, the water ecological condition in the later stage is kept in a good state for a long time, the service function of the water ecological system is mined, the economic value is created as the key point of regional development, and the service function of the water ecological system, the social economic index weight and the evaluation index number can be increased according to actual conditions.
Furthermore, the balance type water ecological protection system is suitable for the middle stage of regional water ecological protection work implementation, and the water ecological protection and the economic development region are considered at the stage, so that the number and the weight of the water ecological health index, the system service function and the economic index can be increased or decreased according to actual conditions.
In step S202, an evaluation index system is formed by matching the ecological security evaluation index according to the basin type. In the embodiment of the application, an evaluation index system can be constructed in a four-layer mode. Wherein the ecological safety index is used as a target layer (first layer, V layer) for representing the overall condition of regional water ecological safety. The second layer is a scheme layer (layer A) for establishing a framework of driving force-pressure-state-influence-response, and the framework is respectively composed of human socioeconomic activities, water ecological health, service targets, state targets, influence targets and response targets. The third layer is a factor layer (B layer) for classifying and providing factors influencing the social and economic activities of human beings, the ecological health of water and the ecological service function and the management and regulation of water environment and water resources. The fourth layer is an index layer (layer C), which is a specific quantity representation of the factor layer.
In the framework of the driving force-pressure-state-influence-response, the driving force and the pressure are the reasons for causing the ecological environment to change, the driving force is the social and economic development requirement of people and mouth, and the pressure is various pollution sources. The "state" refers to the actual condition of the ecological environment under the driving of pressure, the "influence" refers to the service function condition of the ecological system under the current ecological environment, and the "response" refers to the subjective behavior of human beings for slowing down ecological crisis and ecological destruction. The reference indices for each standard are as follows:
driving force-human social life: socioeconomic performance metrics (population, society, economy);
pressure-various pollution sources: socioeconomic index (point source, surface source, river);
state-ecological status quo: water ecological health index (water quality, substrate, water ecology);
influence-service function of ecosystem under ecological status quo: lake ecological service function importance index (product supply-drinking water, ecological service-human landscape);
response—subjective behavior of humans to slow down ecological damage: regulation and control of management indexes (water and soil resource regulation and control policies, socioeconomic regulation and control policies, environmental policies, long-acting mechanisms, supervision capability and fund investment).
In the embodiment of the application, the automatic matching of the ecological safety evaluation index can be performed according to the judged river basin type, so that the filling of the evaluation index system is completed to form the evaluation index system. And the ecological safety evaluation index can be adjusted according to the actual situation of the river basin.
Illustratively, the evaluation index system may be as shown in the following table 1:
table 1:
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wherein, population density in table 1 refers to population quantity per unit area, and the calculation method can be as follows: population density = evaluation unit total population/evaluation unit area; units: person/km 2 . The population growth rate in table 1 refers to the ratio of the population growth number to the population total number in one year, and the calculation method can be as follows: population growth rate = (end of year population-early year population)/average annual population x 1000%; units: and permillage is made. The town ratio in table 1 is a calculation method for evaluating the proportion of the urban resident population in the area to the resident population in the area, which can be as follows: town resident/resident general population x 100%, units: percent of the total weight of the composition.
The GDP growth rate in Table 1 was used to evaluate the total annual regional production in the river basin over the last year. The calculation method can be as follows: GDP annual growth rate= (GDP of current year-GDP of previous year)/GDP of current year x 100%, unit: percent of the total weight of the composition. The average person GDP in Table 1 refers to the total value of the area production created by the average person in the evaluation unit. The calculation method can be as follows: average GDP = total amount of GDP in evaluation unit/total population in evaluation unit, unit: ten thousand yuan/person.
The COD load per unit area in Table 1 means the ratio of the COD discharge amount to the total area of the basin. The ammonia nitrogen load per unit area in table 1 refers to the ratio of the amount of ammonia nitrogen discharged in the basin to the total area of the basin. The TN load per unit area in table 1 refers to the ratio of the total nitrogen discharge amount to the total area of the basin. The TP load per unit area in table 1 refers to the ratio of the total phosphorus emissions to the total area of the basin.
The average cultivated land area in table 1 refers to the occupied area of average cultivated lands (including paddy fields and dry lands) in a flow field, and the calculation method can be as follows: evaluation unit arable land (including paddy field and dry land) area/evaluation unit population number, unit: hectare. The specific gravity of the town land in table 1 is used for evaluating the specific gravity of the area of the town land (including traffic and construction land) in the unit to occupy the total area of the land, and the calculation method may be as follows: town land specific gravity = town land area (including traffic and worksite) within the evaluation unit/total area of the evaluation unit x 100%. The development strength of the bank buffer in table 1 refers to the ratio of the sum of the construction land area and the agricultural land area in the bank buffer to the total area of the bank buffer. The calculation method can be as follows: (construction area + agricultural area)/the total area of the bank buffer is x 100%. The soil erosion intensity index in table 1 refers to the proportion of the soil erosion area to the total land in the middle and above degree of the flow field, and the calculation method can be as follows: the soil erosion area/land area was 100% at moderate and above. The average water resource occupancy in table 1 refers to the average water resource occupancy per person in the flow domain, and the calculation method may be: water occupancy = amount of water resources in the basin/total population; units: m is m 3 Person.
The upstream incoming water COD concentration in table 1 refers to the average COD concentration of the main storage river, and the calculation method may be as follows: CO 1 ×W L1 +CO 2 ×W L2 +……+CO x ×W Lx To calculate, among others, CO x Total COD concentration, W of the x-th warehousing river Lx And the weight of the (x) th warehousing river is determined according to the proportion of the warehousing water quantity of the river to the total water quantity of the warehousing river. The ammonia nitrogen concentration of the upstream incoming water in table 1 refers to the average ammonia nitrogen concentration of the main storage river, and the calculation method can be as follows: NH (NH) 1 ×W L1 +NH 2 ×W L2 +……+NH x ×W Lx Wherein NH is x The ammonia nitrogen concentration of the x-th warehousing river. The upstream incoming water TN concentration in table 1 refers to the average total nitrogen concentration of the main storage river, and the calculation method may be as follows: TN (TN) 1 ×W L1 +TN 2 ×W L2 +……+TN x ×W Lx To calculate, wherein TN x Total nitrogen concentration for the x-th warehousing river. The upstream incoming water TP concentration in table 1 refers to the average TP concentration of the main in-storage river, and the calculation method may be as follows: TP (Transmission protocol) 1 ×W L1 +TP 2 ×W L2 +……+TP x ×W Lx To perform calculation, wherein TP x The total phosphorus concentration of the x-th warehousing river. The water quality standard reaching rate of the upstream incoming water in the table 1 refers to the standard reaching proportion of the water quality of the main storage river, and the calculation method can be as follows: upstream incoming water quality standard rate= (sum of standard reaching frequencies of warehouse-in river sections/total monitoring frequency of all warehouse-in river sections all year round) ×100.
The dissolved oxygen in Table 1 refers to molecular oxygen (commonly referred to as DO) dissolved in water, and can be directly measured by a dissolved oxygen meter. Ammonia nitrogen in Table 1 can be determined by Nash reagent colorimetry. Total phosphorus in table 1 unfiltered water samples can be digested and total phosphorus determined spectrophotometrically with ammonium molybdate. The total nitrogen in Table 1 can be digested with alkaline potassium persulfate at 120-124 deg.C, and then the total nitrogen content in the water can be determined by ultraviolet spectrophotometry. The permanganate index in Table 1 refers to the amount of oxidizing agent consumed in treating a water sample under certain conditions with potassium permanganate (KMnO 4) as the oxidizing agent, and can be directly measured by an instrument.
Chlorophyll a in table 1 can be measured using a spectrophotometer. The transparency in Table 1 refers to the degree to which a body of water is transparent to light and can be measured directly using a white disk 25 cm in diameter. The comprehensive nutrition index in table 1 is an important index reflecting the eutrophication status of lakes (reservoirs). The formula eleven can be used:
wherein TLI (Sigma) is comprehensive nutrition index, TLI (y) is the nutritional status index of the y-th nutritional index, W y Is the weight of the y-th nutrition index.
The phytoplankton diversity index in table 1 is used to evaluate environmental quality, and is an important index for evaluating water ecology, and the calculation method can be as follows: phytoplankton diversity index = Σ (Z u /Z)log2(Z u Z) performing a calculation, wherein Z u The number of individuals of the u-th phytoplankton, Z is the total number of all phytoplankton species. Zooplankton diversity index in table 1 was used to evaluate environmental quality and was an important index for evaluating water ecology. The calculation method can be as follows: diversity index= - Σ (Z' u /Z’)log2(Z’ u /Z'), wherein: z's' u The number of individuals of the ith zooplankton, Z' is the total number of individuals of all zooplankton species.
The method for calculating the water quality standard reaching rate of the drinking water source in the table 1 can be as follows: the standard reaching rate of concentrated drinking water is = (the sum of standard reaching frequencies of all sections/the total monitoring frequency of all sections in the whole year) multiplied by 100 percent.
Coverage of woods and grasses in table 1: refers to the vegetation area and the percentage of the total area of the land in the reservoir river basin, and the calculation method can be as follows: forest coverage (%) = (forest area + grassland area)/total land area in reservoir flow field x 100%.
The natural bank rate in table 1 refers to the ratio of the length of the natural bank to the total length of the bank line. The calculation method can be as follows: natural bank line rate of bank = natural bank length/(natural bank length + artificial bank length) ×100%.
The natural protection zone level in table 1 refers to the protection zone category included in the reservoir basin according to national standards. Wherein, "5" represents a "national natural protection area", and "4" represents a "provincial (autonomous region, direct jurisdiction) level natural protection area"; "3" represents "city (autonomous state) level natural protection area", "2" represents "county (autonomous county, flag, county level city) level natural protection area", "1" represents "others".
The environmental protection investment index in table 1 refers to the specific gravity of the total production value of the environmental protection investment in the river basin. The calculation method can be as follows: environmental protection investment index= (evaluation unit environmental protection investment/evaluation unit regional production total value) ×100%.
The stable standard reaching rate of industrial enterprise wastewater in table 1 refers to the percentage of the total industrial wastewater which is discharged to the outside of the enterprise through all the sewage outlets of the main industrial enterprise units in the river basin and stably reaches the national or local pollution discharge standard to the total discharged industrial wastewater, and the calculation method can be as follows: industrial enterprise wastewater stabilization standard reaching rate= (industrial wastewater discharge reaching scalar x industrial wastewater discharge amount) ×100%. The urban domestic sewage centralized treatment rate in table 1 refers to the percentage of the domestic sewage quantity reaching the discharge standard in the total domestic sewage discharge amount of the urban built-up area after the secondary treatment or more secondary treatment of the sewage treatment plant or other treatment facilities (equivalent to secondary treatment), and the calculation method can be as follows: urban domestic sewage centralized treatment rate = treatment capacity of each urban sewage treatment plant/(calculated or obtained according to a water supply capacity coefficient method) urban sewage discharge total amount x 100%. The town domestic garbage collection treatment rate in table 1 refers to the percentage of the domestic garbage production amount of the town built-up area to the domestic garbage centralized treatment amount of the town built-up area, and the calculation method can be as follows: urban household garbage centralized treatment rate = urban household garbage centralized treatment amount/urban built-up area household garbage generation amount x 100%. The centralized treatment rate of rural domestic sewage in table 1 refers to the percentage of rural domestic sewage which is treated by two or more stages of centralized sewage treatment plants and reaches the discharge standard in the total amount of rural domestic sewage discharge, and the calculation method can be as follows: rural domestic sewage centralized treatment rate = rural domestic sewage centralized treatment amount/rural domestic sewage discharge total amount x 100%. The rural domestic garbage collection treatment rate in table 1 refers to the percentage of the rural domestic garbage centralized treatment amount to the rural domestic garbage production amount, and the calculation method can be as follows: rural domestic waste centralized treatment rate = rural domestic waste centralized treatment amount/rural domestic waste production amount x 100%. The comprehensive utilization rate of the rural livestock manure in the table 1 refers to the percentage of the comprehensive utilization amount of the rural livestock manure to the production amount of the rural livestock manure, and the calculation method can be as follows: rural livestock manure comprehensive utilization rate = rural livestock manure comprehensive utilization amount/rural livestock manure production amount x 100%.
The supervision ability index in table 1 refers to the supervision, management, supervision ability of the ecological environment in the river basin. The long-acting management mechanism in table 1 is constructed to be a system which can ensure the normal operation of the system for a long time and can play the expected function.
It will be appreciated that the above description of the evaluation index system through table 1 is merely exemplary, and in practical applications, the evaluation index system needs to be constructed according to practical application situations, and the present application is not limited in this respect.
In step S203, a first index weight corresponding to each of the physiological safety evaluation indexes in the scheme layer is determined. In the embodiment of the application, each first investigation scoring set corresponding to each physiological safety evaluation index of the scheme layer can be obtained first. Specifically, the weight score investigation data table fed back by the evaluator may be identified, and each first investigation score corresponding to each physiological safety evaluation index of the scheme layer is identified, so as to form a first investigation score combination based on each first investigation score.
Further, each first index score corresponding to each physiological safety evaluation index of the scheme layer can be determined according to each first investigation score set. Illustratively, determining the respective first index scores may be performed by the following equation fourteen:
Formula fourteen:
wherein, the liquid crystal display device comprises a liquid crystal display device,assigning a score to a first index corresponding to the kth 1 ecological safety evaluation index of the scheme layer, Q 1 Assigning a number of points to the first survey, +.>And assigning a score to the (q 1) first investigation corresponding to the (k 1) ecological security evaluation index of the scheme layer.
Further, the first index weight corresponding to the current ecological safety evaluation index of the scheme layer can be determined according to the first index score corresponding to the current ecological safety evaluation index of the scheme layer, the index number of the scheme layer and each first index score. Illustratively, determining the respective first index weights may be performed by the following formula fifteen:
formula fifteen:
wherein, the liquid crystal display device comprises a liquid crystal display device,the first index weight, m, corresponding to the k1 th ecological safety evaluation index of the scheme layer 1 For the index number of the scheme layer, +.>Representation of m in the scheme layer 1 And summing the first index assigners corresponding to the individual ecological safety evaluation indexes.
In step S204, a second index weight corresponding to each of the physiological safety evaluation indexes in the factor layer is determined. In the embodiment of the application, each second index scoring set corresponding to each physiological safety evaluation index of the factor layer can be obtained first. Specifically, the weight score investigation data table fed back by the evaluator may be identified, and each second investigation score corresponding to each physiological safety evaluation index of the factor layer is identified, so as to form a second investigation score set based on each second investigation score.
Further, each second index score corresponding to each physiological safety assessment index of each second investigation-score-diversity determining factor layer may be determined, for example, by the following formula sixteen:
formula sixteen:
wherein, the liquid crystal display device comprises a liquid crystal display device,assigning a score to a second index corresponding to the k2 th ecological safety evaluation index of the factor layer, Q 2 Assigning a number of points to the second survey, +.>And assigning a score to the q2 second investigation corresponding to the k2 ecological security assessment index of the factor layer.
Further, the second index score corresponding to the current ecological security assessment index of the factor layer, the index number of the factor layer and the second index weight corresponding to the current ecological security assessment index of each second index score can be determined according to the second index score corresponding to the current ecological security assessment index of the factor layer. Illustratively, determining the respective second index weights may be performed by the following formula seventeen:
seventeenth formula:
wherein, the liquid crystal display device comprises a liquid crystal display device,the weight m of the second index corresponding to the k2 th ecological safety evaluation index of the factor layer 2 Index number of factor layer, ++>Representing m in the factor layer 2 And summing the second index assigners corresponding to the individual ecological safety evaluation indexes.
In step S205, a third index weight corresponding to each of the physiological safety evaluation indexes in the index layer is determined. In the embodiment of the application, each third investigation grading set corresponding to each physiological safety evaluation index of the index layer can be obtained first. Specifically, the weight score investigation data table fed back by the evaluator may be identified, and each third investigation score corresponding to each physiological safety evaluation index of the index layer is identified, so as to form a third investigation score combination based on each third investigation score.
Further, each third index score corresponding to each physiological safety assessment index of each third investigation-score-combination determination index layer may be determined, for example, by the following equation eighteen:
equation eighteen:
wherein, the liquid crystal display device comprises a liquid crystal display device,assigning a score to a third index corresponding to the kth 3 ecological safety assessment index of the index layer, Q 3 Assigning a number of points to the third survey, +.>And assigning points to the (q 3) th third investigation corresponding to the (k 3) th ecological safety evaluation index of the index layer.
Further, a third index score corresponding to the current ecological safety evaluation index of the index layer, the index number of the index layer, and a third index weight corresponding to the current ecological safety evaluation index of each third index score may be determined according to the third index score corresponding to the current ecological safety evaluation index of the index layer. Illustratively, determining the respective third index weights may be performed by the following formula nineteen:
nineteenth formula:
wherein, the liquid crystal display device comprises a liquid crystal display device,a third index weight corresponding to the k3 th ecological safety evaluation index of the index layer, m 3 Is the index number of index layer->Representation of m in index layer 3 And summing the third index assigners corresponding to the ecological safety evaluation indexes.
It should be understood that the descriptions of the determining manners of the first index weight, the second index weight and the third index weight in the steps S203 to S205 are merely exemplary, and the steps S203 to S205 may be performed sequentially or simultaneously, and in practical application, the determining manners and the determining orders of the first index weight, the second index weight and the third index weight need to be determined according to the practical application, which is not limited in this aspect of the present application.
For example, the first index weight corresponding to each of the physiological safety evaluation indexes in the solution layer, the second index weight corresponding to each of the physiological safety evaluation indexes in the factor layer, and the third index weight corresponding to each of the physiological safety evaluation indexes in the index layer may be assembled into an index weight value table, where the index weight value table may be as shown in table 2 below:
table 2:
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it may be understood that the first index weight corresponding to each of the physiological safety evaluation indexes in the scheme layer, the second index weight corresponding to each of the physiological safety evaluation indexes in the factor layer, and the third index weight corresponding to each of the physiological safety evaluation indexes in the index layer shown in table 2 are only exemplary values, and in practical application, the first index weight, the second index weight, and the third index weight need to be calculated and determined according to practical application conditions, and the application is not limited in this respect.
In some embodiments, the determination of the ecological security index and the determination of the river basin supervision policy may be described in detail in connection with the flowchart shown in fig. 3. Fig. 3 shows an exemplary flow chart of a watershed water ecological safety assessment method according to further embodiments of the present application. Referring to fig. 3, the method for evaluating ecological safety of river basin water according to the embodiment of the present application may include:
In step S301, a target relative weight is determined from the first index weight, the second index weight, and the third index weight. In the embodiment of the application, the target relative weight is the weight of the ecological security assessment index of the index layer relative to the ecological security assessment index of the scheme layer corresponding to the index layer.
Specifically, the target relative weight may be determined by the following equation twenty:
formula twenty: w (C) k3 A k1 )＝W(C k3 B k2 )×W(B k2 A k1 )
Wherein W (C) k3 B k2 ) For the weight of the kth 3 ecological safety evaluation index of the index layer relative to the kth 2 ecological safety evaluation index of the factor layer corresponding to the index layer, the calculation can be exemplarily performed by the formula twenty-one:
formula twenty-one: w (C) k3 B k2 )＝W Ck3 ×W Bk2 ；
W(B k2 A k1 ) For the weight of the factor layer kth 2 ecological security assessment index relative to the scheme layer kth 1 ecological security assessment index corresponding to the factor layer, the calculation can be exemplarily performed by the formula twenty-two:
formula twenty-two: w (B) k2 A k1 )＝W Bk2 ×W Ak1 ；
W(C k3 A k1 ) The target relative weight is the weight of the kth 3 ecological safety assessment index of the index layer relative to the kth 1 ecological safety assessment index of the scheme layer corresponding to the index layer.
In step S302, an index score value corresponding to each physiological safety evaluation index of the index layer is determined according to the river basin ecological environment data.
In the embodiment of the application, index scoring values corresponding to different physiological safety evaluation indexes can be scored by adopting an empirical model formula and/or according to data collected by an expert scoring method. The empirical model formula is suitable for actual measurement or statistical indexes such as socioeconomic performance, pollution emission performance, ecological environment monitoring and the like, percentage assignment is generally carried out according to related evaluation standards, then a fitting model formula is established according to the index value and the scoring relation, and finally assignment is carried out according to the calculation result of the model formula. The expert scoring method is suitable for indexes such as mechanism class, supervision ability and the like which cannot be quantified directly through actual monitoring or statistics, and a plurality of experts score.
Illustratively, the ecological security evaluation index in the foregoing table 1 is explained as an example: aiming at the ecological safety evaluation index of population density, when the population density is more than or equal to 0 and less than or equal to 1000, the index grading value corresponding to the population density is 100-0.1 multiplied by the population density; when population density > 1000, the index score value corresponding to population density is 0. For the ecological safety evaluation index of population growth rate, when the population growth rate is not less than 1 and not more than 11, the index grading value corresponding to the population growth rate is-10 times of population growth rate +110; when the population growth rate is less than 1, the index grading value corresponding to the population growth rate is 100; when the population growth rate is greater than 11, the index score value corresponding to the population growth rate is 0. Aiming at the ecological safety evaluation index of the town rate, when the town rate is less than 30 and less than or equal to 81, the index grading value corresponding to the town rate is-0.0253 multiplied by the town rate 2 +1.0444 ×town ratio +89.104; when the town ratio is less than or equal to 30, the index grading value corresponding to the town ratio is 100; when the town ratio is more than 81, the index scoring value corresponding to the town ratio is 0. Aiming at the ecological safety evaluation index of the GDP growth rate, when the GDP annual growth rate is not more than 4 and not more than 24, the index grading value corresponding to the GDP annual growth rate is-5×GDP annual growth rate +120; when the GDP annual growth rate is less than 4, the index grading value corresponding to the GDP annual growth rate is 100; when the annual growth rate of GDP is > 24, the index score value corresponding to the annual growth rate of GDP is 0. Aiming at the ecological safety evaluation index of the average human GDP, when the average human GDP is less than 2, the index grading value corresponding to the average human GDP is 100; when the average person GDP is more than or equal to 2 and less than or equal to 7, the index grading value corresponding to the average person GDP is-20 multiplied by average person GDP+140; when the average person GDP is more than 7 and less than or equal to 12, the index grading value corresponding to the average person GDP is 20 x average person GDP-140; when the average GDP is more than 12, the index score value corresponding to the average GDP is 100. Aiming at the ecological safety evaluation index of the COD load quantity in unit area, when the COD load quantity in unit area is less than or equal to 2.5 and less than or equal to 7.5, the COD load in unit area is less than or equal to 7.5The index grading value corresponding to the quantity is-17.955 multiplied by the COD load quantity of unit area +150; when the COD load per unit area is less than 2.5, the index grading value corresponding to the COD load per unit area is 100; when the COD load per unit area is more than 7.5, the index score value corresponding to the COD load per unit area is 0. Aiming at the ecological safety evaluation index of the ammonia nitrogen load in unit area, when the ammonia nitrogen load in unit area is more than or equal to 0.1 and less than or equal to 1.1, the index grading value corresponding to the ammonia nitrogen load in unit area is-100 multiplied by the ammonia nitrogen load in unit area plus 110; when the ammonia nitrogen load in unit area is less than 0.1, the index grading value corresponding to the ammonia nitrogen load in unit area is 100; when the index grading value corresponding to the ammonia nitrogen load in unit area is more than 1.1, the index grading value corresponding to the ammonia nitrogen load in unit area is 0. Aiming at the ecological safety evaluation index of TN load of unit area, when TN load of unit area is less than or equal to 0.1 and less than or equal to 1.1, the index grading value corresponding to TN load of unit area is-100 multiplied by TN load of unit area +110; when TN load in unit area is less than 0.1, the index grading value corresponding to TN load in unit area is 100; when the TN load per unit area is more than 1.1, the index score value corresponding to the TN load per unit area is 0. For the ecological safety evaluation index of the TP load in unit area, when the TP load in unit area is more than or equal to 0.02 and less than or equal to 0.22, the index grading value corresponding to the TP load in unit area is-666 multiplied by TP load in unit area +110; when the TP load per unit area is less than 0.02, the index scoring value corresponding to the TP load per unit area is 100; when the TP load per unit area is > 0.22, the index score value corresponding to the TP load per unit area is 0. Aiming at the ecological safety evaluation index of the average cultivated area, when the average cultivated area is more than or equal to 0.02 and less than or equal to 0.22, the index grading value corresponding to the average cultivated area is-500 multiplied by +110; when the average cultivated area is less than 0.02, the index grading value corresponding to the average cultivated area is 100; when the average cultivated area is more than 0.22, the index score value corresponding to the average cultivated area is 0. Aiming at the ecological safety evaluation index of the specific gravity of the urban land, when the specific gravity of the urban land is more than or equal to 7 and less than or equal to 17, the index grading value corresponding to the specific gravity of the urban land is-10 multiplied by +170; when the specific gravity of the urban land is less than 7, the index grading value corresponding to the specific gravity of the urban land is 100; when the specific gravity of the urban land is more than 17, the specific gravity of the urban land is opposite to that of the urban land The score value of the corresponding index is 0. Aiming at the ecological safety evaluation index of the development intensity of the bank buffer, when the development intensity of the bank buffer is more than or equal to 0 and less than or equal to 50, the index grading value corresponding to the development intensity of the bank buffer is 100-the development intensity of the bank buffer; when the development intensity of the bank buffer is more than 50, the index scoring value corresponding to the development intensity of the bank buffer is 0. For the ecological safety evaluation index of the soil erosion intensity index, when the soil erosion intensity index is more than or equal to 0 and less than or equal to 25, the index grading value corresponding to the soil erosion intensity index is 0.1439 multiplied by the soil erosion intensity index 2 7.423 ×soil erosion Strength index +97.757; when the soil erosion intensity index is more than 25, the index score value corresponding to the soil erosion intensity index is 0. Aiming at the ecological safety evaluation index of the water resource occupation amount, when the water resource occupation amount is more than or equal to 0 and less than or equal to 4000, the index grading value corresponding to the water resource occupation amount is 0.025 multiplied by the water resource occupation amount; when the water resource occupation amount is more than 4000, the index grading value corresponding to the water resource occupation amount is 100. Aiming at the ecological safety evaluation index of the COD concentration of the upstream inflow water, when the COD concentration of the upstream inflow water is not more than 15 and not more than 45, the index grading value corresponding to the COD concentration of the upstream inflow water is (-3-1/3) multiplied by +150; when the COD concentration of the upstream inflow water is less than 15, the index scoring value corresponding to the COD concentration of the upstream inflow water is 100; when the COD concentration of the upstream inflow water is more than 45, the index scoring value corresponding to the COD concentration of the upstream inflow water is 0. Aiming at an ecological safety evaluation index of the ammonia nitrogen concentration of the upstream incoming water, when the ammonia nitrogen concentration of the upstream incoming water is more than or equal to 0 and less than or equal to 2.5, the index grading value corresponding to the ammonia nitrogen concentration of the upstream incoming water is-40 multiplied by +100; when the ammonia nitrogen concentration of the upstream incoming water is more than 2.5, the index scoring value corresponding to the ammonia nitrogen concentration of the upstream incoming water is 0. Aiming at an ecological safety evaluation index of the TN concentration of the upstream inflow water, when the TN concentration of the upstream inflow water is more than or equal to 0 and less than or equal to 2.5, the index grading value corresponding to the TN concentration of the upstream inflow water is-40 multiplied by +100; when the TN concentration of the upstream inflow water is more than 2.5, the index score value corresponding to the TN concentration of the upstream inflow water is 0. For the ecological safety evaluation index of the upstream inflow TP concentration, when the upstream inflow TP concentration is more than or equal to 0 and less than or equal to 0.5, the index scoring value corresponding to the upstream inflow TP concentration is-2 00 x upstream incoming water TP concentration +100; when the upstream inflow TP concentration is more than 0.5, the index score value corresponding to the upstream inflow TP concentration is 0. Aiming at an ecological safety evaluation index of the water quality standard reaching rate of upstream water, when the water quality standard reaching rate of the upstream water is not more than 50 and not more than 100, the index grading value corresponding to the water quality standard reaching rate of the upstream water is 2 multiplied by the water quality standard reaching rate of the upstream water to-100; when the water quality standard reaching rate of the upstream water is less than 50, the index grading value corresponding to the water quality standard reaching rate of the upstream water is 0. For the ecological safety evaluation index of dissolved oxygen, when the dissolved oxygen is less than 1.5 and less than 8.5, the index score value corresponding to the dissolved oxygen is-0.884 multiplied by the dissolved oxygen 2 +23.671 x dissolved oxygen-36.163; when the dissolved oxygen is more than or equal to 8.5, the index grading value corresponding to the dissolved oxygen is 100; when the dissolved oxygen is less than or equal to 1.5, the index score value corresponding to the dissolved oxygen is 0. For the ecological safety evaluation index of ammonia nitrogen, when the ammonia nitrogen is more than 0.1 and less than 2.15, the index grading value corresponding to the ammonia nitrogen is-3.7931 multiplied by the ammonia nitrogen 2 38.958 XAmmonia nitrogen +100.43; when the ammonia nitrogen is more than or equal to 2.15, the index grading value corresponding to the ammonia nitrogen is 0; when the ammonia nitrogen is less than or equal to 0.1, the index scoring value corresponding to the ammonia nitrogen is 100. For the ecological safety evaluation index of total phosphorus, when 0.006 < total phosphorus < 0.45, the index grading value corresponding to total phosphorus is 706.56 times total phosphorus 2 511.56 ×total phosphorus+ 91.03; when the total phosphorus is more than or equal to 0.45, the index grading value corresponding to the total phosphorus is 0; when the total phosphorus is less than or equal to 0.006, the index grading value corresponding to the total phosphorus is 100. Aiming at the ecological safety evaluation index of total nitrogen, when the total nitrogen is more than 0.1 and less than 2.2, the index grading value corresponding to the total nitrogen is-46.407 multiplied by total nitrogen plus 104; when the total nitrogen is more than or equal to 2.2, the index grading value corresponding to the total nitrogen is 0; when the total nitrogen is less than or equal to 0.1, the index grading value corresponding to the total nitrogen is 100. For the ecological safety evaluation index of the permanganate index, when the permanganate index is less than 1 and less than 12, the index grading value corresponding to the permanganate index is-12.27 multiplied by the permanganate index +112.59; when the permanganate index is more than or equal to 12, the index scoring value corresponding to the permanganate index is 0; when the permanganate index is less than or equal to 1, the index score corresponding to the permanganate index is 100. For the ecological safety evaluation index of chlorophyll A, when chlorophyll A is more than or equal to 1 and less than or equal to 11, the index grading value corresponding to chlorophyll A is-10 multiplied by chlorophyll A+110; chlorophyll A corresponds to when chlorophyll A < 1The index score value of (2) is 100; when chlorophyll A is more than 11, the index score value corresponding to chlorophyll A is equal to. For the transparency, namely the ecological safety evaluation index, when the transparency is more than or equal to 0 and less than or equal to 2.5, the index grading value corresponding to the transparency is-19.215 multiplied by the transparency 2 +83.598 x transparency +5.4805; when the transparency is > 2.5, the index score value corresponding to the transparency is 100. Aiming at the ecological safety evaluation index of the comprehensive nutrition index, when the comprehensive nutrition index is more than or equal to 25 and less than or equal to 75, the index grading value corresponding to the comprehensive nutrition index is-2 multiplied by the comprehensive nutrition index +150; when the comprehensive nutrition index is less than 25, the index grading value corresponding to the comprehensive nutrition index is 100; when the comprehensive nutrition index is more than 75, the index grading value corresponding to the comprehensive nutrition index is 0. Aiming at the ecological safety evaluation index of the phytoplankton diversity index, when the phytoplankton diversity index is more than or equal to 0 and less than or equal to 3.5, the index grading value corresponding to the phytoplankton diversity index is 28.571 multiplied by the phytoplankton diversity index; when the phytoplankton diversity index is > 3.5, the index score value corresponding to the phytoplankton diversity index is 100. Aiming at the ecological safety evaluation index of the zooplankton diversity index, when the zooplankton diversity index is more than or equal to 0 and less than or equal to 3.5, the index grading value corresponding to the zooplankton diversity index is 28.571 multiplied by the zooplankton diversity index; when the zooplankton diversity index is more than 3.5, the index score value corresponding to the zooplankton diversity index is 100. Aiming at the ecological safety evaluation index of the water quality standard reaching rate of the drinking water source, when the water quality standard reaching rate of the drinking water source is not more than 50 and not more than 100, the index grading value corresponding to the water quality standard reaching rate of the drinking water source is 2 multiplied by-100; when the standard reaching rate of the water quality of the drinking water source is less than 50, the index grading value corresponding to the standard reaching rate of the water quality of the drinking water source is 0. Aiming at the ecological safety evaluation index of the forest grass coverage rate, when the forest grass coverage rate is more than or equal to 30 and less than or equal to 80, the index grading value corresponding to the forest grass coverage rate is 2 multiplied by-60; when the coverage rate of the forest grass is less than 30, the index grading value corresponding to the coverage rate of the forest grass is 0; when the coverage rate of the forest grass is more than 80, the index grading value corresponding to the coverage rate of the forest grass is 100. Aiming at the ecological safety evaluation index of the natural bank band rate, when the natural bank band rate is less than or equal to 45 and less than or equal to 95, the index corresponding to the natural bank band rate is scored The value is 2 x the natural library shore band rate-90; when the natural bank band rate is less than 45, the index scoring value corresponding to the natural bank band rate is 0; when the natural bank band rate is more than 95, the index scoring value corresponding to the natural bank band rate is 100. Aiming at the ecological safety evaluation index of the natural protection area level, when the natural protection area level is 5, the index grading value corresponding to the natural protection area level is 100; when the natural protection area level is 4, the index grading value corresponding to the natural protection area level is 80; when the natural protection area level is 3, the index grading value corresponding to the natural protection area level is 70; when the natural protection area level is 2, the index grading value corresponding to the natural protection area level is 60; when the natural protection area level is 1, the index score value corresponding to the natural protection area level is 40. Aiming at the ecological safety evaluation index of the environmental protection investment index, when the environmental protection investment index is more than or equal to 0.15 and less than or equal to 1.65, the index grading value corresponding to the environmental protection investment index is (66+2/3) multiplied by the environmental protection investment index-10; when the environmental protection investment index is less than 0.15, the index grading value corresponding to the environmental protection investment index is 0; when the environmental protection investment index is more than 1.65, the index grading value corresponding to the environmental protection investment index is 100. Aiming at the ecological safety evaluation indexes of the stable standard reaching rate of industrial enterprise waste water, the centralized treatment rate of urban domestic waste water, the centralized treatment rate of rural domestic waste water, the rural domestic waste collection treatment rate and the comprehensive utilization rate of rural livestock and poultry manure, the index grading value is equal to the corresponding ecological safety evaluation index value. For the supervision ability index and the long-acting management mechanism, the two ecological safety evaluation indexes can be established, and the corresponding index grading value can be determined according to the collected grading data by utilizing an expert grading method, for example, the grading data can be directly used as the index grading value, or the grading data can be multiplied by a preset coefficient to be used as the index grading value.
It should be understood that the foregoing description of the determination manner of the index score value is merely exemplary, and in practical application, the calculation manner of the index score value needs to be determined according to the practical application, and the present application is not limited in this respect.
In step S303, a solution layer score value corresponding to each of the physiological safety evaluation indexes of the solution layer is determined according to the target relative weight and each of the index scores. Specifically, the determination can be made by way of example by the following twenty-third equation:
twenty-third formula:
wherein G is k1 A plan layer score value corresponding to the ecological safety evaluation index of the kth 1 plan layer, m 4 G is the index number of the ecological safety evaluation index of the index layer contained in the kth 1 scheme layer k1j And (3) the index grading value of the j-th ecological safety evaluation index in the ecological safety evaluation indexes of the index layers contained in the k 1-th scheme layer.
In step S304, an ecological safety index is determined according to the score value of each scheme layer and the first index weight corresponding to each ecological safety evaluation index in the scheme layer. In the embodiment of the application, the ecological safety index can be determined by carrying out weighted summation on the scheme layer score values corresponding to the indexes such as the socioeconomic impact, the water ecological health, the ecological service function, the regulation and control management and the like of the scheme layer. Illustratively, the determination can be made by twenty-four of the following formulas:
Twenty-four of the formulas:
wherein ESI represents the ecological safety index for evaluating the safety condition of the whole river basin.
It should be understood that the above description of the steps of determining the ecological security index in steps S301 to S303 is merely exemplary, and in practical application, the manner of calculating the ecological security index is determined according to the practical application, and the present application is not limited in this respect.
In step S305, an ecological safety rating is determined according to the ecological safety index and a preset rating scale. In the embodiment of the present application, the ecological safety class may be divided into five classes, and a specific ecological safety class may be as shown in the following table 3:
table 3:
| ecological safety grading | Grading standard | Degree of ecological safety |
| V-stage | 0＜ESI≤20 | Very unsafe to use |
| Grade IV | 20＜ESI≤40 | Unsafe to use |
| Class III | 40＜ESI≤60 | Critical safety |
| Grade II | 60＜ESI≤80 | Secure |
| Level I | 80＜ESI≤100 | Is very safe |
It will be appreciated that the above description of the ecological security grading is merely exemplary, and in practice the grading may be performed according to the actual application, and the application is not limited in this respect.
In step S306, a river basin supervision policy is determined according to the ecological security hierarchy. It will be appreciated that each of the physiological security levels will correspond to a basin supervision policy. As an example, the first supervision policy for classifying the ecological security into the v-class corresponding may include measures for prohibiting all units generating the point source pollution or the non-point source pollution from performing pollution emission, developing the construction of the water ecological restoration project, and raising the inspection frequency of the river basin to be once a day. The second supervision strategy for classifying the ecological safety into the class IV corresponds to the class IV can comprise measures of limiting the unit pollution emission amount of all generated point source pollution or non-point source pollution, improving the inspection frequency of the river basin to be three days and the like. It can be understood that in practical application, the setting mode of the river basin supervision policies is various, and the river basin supervision policies corresponding to each ecological security classification need to be determined according to the practical application conditions, so that after the ecological security level is determined, the corresponding river basin supervision policies can be executed, and the ecological security condition of the river basin water is improved.
In some embodiments, the ecological safety index of the river basin can be visually displayed, the ecological safety indexes of different river basins can be displayed by selecting different river basins, and basic information, land utilization conditions, vegetation coverage conditions and the like of different river basins can be checked. Further, the ecological safety indexes of different flow area areas can be queried, added and modified.
Corresponding to the embodiment of the application function implementation method, the application also provides electronic equipment for executing the river basin water ecological security assessment method and corresponding embodiments.
Fig. 4 shows a block diagram of a hardware configuration of an electronic device 400 in which a watershed water ecological safety assessment method of an embodiment of the present application can be implemented. As shown in fig. 4, electronic device 400 may include a processor 410 and a memory 420. In the electronic apparatus 400 of fig. 4, only constituent elements related to the present embodiment are shown. Thus, it will be apparent to those of ordinary skill in the art that: electronic device 400 may also include common constituent elements that are different from those shown in fig. 4. Such as: a fixed point arithmetic unit.
Electronic device 400 may correspond to a computing device having various processing functions, such as functions for generating a neural network, training or learning a neural network, quantifying a floating point type neural network as a fixed point type neural network, or retraining a neural network. For example, the electronic device 400 may be implemented as various types of devices, such as a Personal Computer (PC), a server device, a mobile device, and so forth.
The processor 410 controls all functions of the electronic device 400. For example, the processor 410 controls all functions of the electronic device 400 by executing programs stored in the memory 420 on the electronic device 400. The processor 410 may be implemented by a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), an Application Processor (AP), an artificial intelligence processor chip (IPU), etc. provided in the electronic device 400. However, the present application is not limited thereto.
In some embodiments, processor 410 may include an input/output (I/O) unit 411 and a computing unit 412. The I/O unit 411 may be used to receive various data, such as river basin ecological environment data. Illustratively, the calculating unit 412 may be configured to construct an evaluation index system according to the river basin ecological environment data received via the I/O unit 411, further determine an index weight corresponding to each ecological safety evaluation index in the evaluation index system, further determine an ecological safety index according to the river basin ecological environment data and the index weight, and finally determine a river basin supervision policy according to the ecological safety index. This ecological safety index and river basin supervision policy may be output by I/O unit 411, for example. The output data may be provided to memory 420 for reading by other devices (not shown) or may be provided directly to other devices for use.
The memory 420 is hardware for storing various data processed in the electronic device 400. For example, the memory 420 may store processed data and data to be processed in the electronic device 400. Memory 420 may store data sets, e.g., basin ecological environment data, etc., involved in basin water ecological safety assessment methods that have been processed or are to be processed by processor 410. Further, the memory 420 may store applications, drivers, etc. to be driven by the electronic device 400. For example: memory 420 may store various programs related to the basin water ecological safety assessment method to be performed by processor 410. The memory 420 may be a DRAM, but the present application is not limited thereto. The memory 420 may include at least one of volatile memory or nonvolatile memory. The nonvolatile memory may include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), flash memory, phase change RAM (PRAM), magnetic RAM (MRAM), resistive RAM (RRAM), ferroelectric RAM (FRAM), and the like. Volatile memory can include Dynamic RAM (DRAM), static RAM (SRAM), synchronous DRAM (SDRAM), PRAM, MRAM, RRAM, ferroelectric RAM (FeRAM), and the like. In an embodiment, the memory 420 may include at least one of a Hard Disk Drive (HDD), a Solid State Drive (SSD), a high density flash memory (CF), a Secure Digital (SD) card, a Micro-secure digital (Micro-SD) card, a Mini-secure digital (Mini-SD) card, an extreme digital (xD) card, a cache (caches), or a memory stick.
In summary, specific functions implemented by the memory 420 and the processor 410 of the electronic device 400 provided in the embodiments of the present disclosure may be explained in comparison with the foregoing embodiments in the present disclosure, and may achieve the technical effects of the foregoing embodiments, which will not be repeated herein.
In this embodiment, the processor 410 may be implemented in any suitable manner. For example, the processor 410 may take the form of, for example, a microprocessor or processor, and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable logic controller, and an embedded microcontroller, among others.
It should also be appreciated that any of the modules, units, components, servers, computers, terminals, or devices illustrated herein that execute instructions may include or otherwise access a computer readable medium, such as a storage medium, computer storage medium, or data storage device (removable) and/or non-removable) such as a magnetic disk, optical disk, or magnetic tape. Computer storage media may include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
While various embodiments of the present application have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the application. It should be understood that various alternatives to the embodiments of the application described herein may be employed in practicing the application. The appended claims are intended to define the scope of the application and are therefore to cover all equivalents or alternatives falling within the scope of these claims.
Claims (10)
1. A watershed water ecological safety assessment method, comprising the steps of:
acquiring river basin ecological environment data;
constructing an evaluation index system according to the river basin ecological environment data;
respectively determining index weights corresponding to each physiological safety evaluation index in the evaluation index system;
determining an ecological safety index according to the river basin ecological environment data and the index weight;
and determining a river basin supervision strategy according to the ecological safety index.
2. The watershed water ecological safety assessment method according to claim 1, wherein the constructing an assessment index system according to the watershed ecological environment data comprises:
Determining a river basin type according to the river basin ecological environment data, wherein the river basin type comprises an ecological protection type, an economic development type and a balance type;
and matching ecological safety evaluation indexes according to the drainage basin type to form an evaluation index system.
3. The watershed water ecological safety assessment method according to claim 1, wherein the assessment index system comprises a scheme layer, a factor layer and an index layer;
the determining the index weight corresponding to each physiological safety evaluation index in the evaluation index system respectively comprises the following steps:
respectively determining a first index weight corresponding to each physiological safety evaluation index in the scheme layer;
respectively determining a second index weight corresponding to each physiological safety evaluation index in the factor layer;
and respectively determining a third index weight corresponding to each physiological safety evaluation index in the index layer.
4. The method for evaluating the ecological safety of water in a river basin according to claim 3, wherein the determining the first index weight corresponding to each ecological safety evaluation index in the scheme layer respectively includes:
acquiring each first investigation diversity corresponding to each physiological safety evaluation index of the scheme layer;
Determining each first index score corresponding to each physiological safety evaluation index of the scheme layer according to each first investigation score set;
and determining the first index weight corresponding to the current ecological safety evaluation index of the scheme layer according to the first index score corresponding to the current ecological safety evaluation index of the scheme layer, the index number of the scheme layer and each first index score.
5. The method for evaluating the ecological safety of watershed water according to claim 3, wherein the determining the second index weight corresponding to each ecological safety evaluation index in the factor layer respectively comprises:
acquiring each second investigation scoring set corresponding to each physiological safety evaluation index of the factor layer;
determining each second index score corresponding to each physiological safety evaluation index of the factor layer according to each second investigation score set;
and determining the second index weight corresponding to the current ecological safety evaluation index of the factor layer according to the second index score corresponding to the current ecological safety evaluation index of the factor layer, the index number of the factor layer and each second index score.
6. The method for evaluating the ecological safety of water in a river basin according to claim 3, wherein the determining the third index weight corresponding to each ecological safety evaluation index in the index layer respectively comprises:
Acquiring each third investigation scoring set corresponding to each physiological safety evaluation index of the index layer;
determining each third index score corresponding to each physiological safety evaluation index of the index layer according to each third investigation score set;
and determining the third index weight corresponding to the current ecological safety evaluation index of the index layer according to the third index score corresponding to the current ecological safety evaluation index of the index layer, the index number of the index layer and each third index score.
7. A watershed water ecological safety assessment method according to claim 3, wherein said determining an ecological safety index from said watershed ecological environment data and said index weight comprises:
determining a target relative weight according to the first index weight, the second index weight and the third index weight, wherein the target relative weight is the weight of the ecological safety evaluation index of the index layer relative to the ecological safety evaluation index of the scheme layer corresponding to the index layer;
respectively determining index grading values corresponding to each ecological safety evaluation index of the index layer according to the river basin ecological environment data;
Determining a scheme layer score value corresponding to each physiological safety evaluation index of the scheme layer according to the target relative weight and each index score value;
and determining the ecological safety index according to the scoring value of each scheme layer and the first index weight corresponding to each ecological safety evaluation index in the scheme layer.
8. The watershed water ecological safety assessment method according to claim 1, wherein the determining a watershed supervision policy according to the ecological safety index comprises:
determining ecological safety classification according to the ecological safety index and a preset classification range;
and determining the river basin supervision strategy according to the ecological security classification.
9. An electronic device, comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method of any of claims 1-8.
10. A non-transitory machine-readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method of any of claims 1-8.
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