CN110689193A - Method for determining ecological water demand of river channel - Google Patents
Method for determining ecological water demand of river channel Download PDFInfo
- Publication number
- CN110689193A CN110689193A CN201910910020.5A CN201910910020A CN110689193A CN 110689193 A CN110689193 A CN 110689193A CN 201910910020 A CN201910910020 A CN 201910910020A CN 110689193 A CN110689193 A CN 110689193A
- Authority
- CN
- China
- Prior art keywords
- section
- flow
- river channel
- ecological
- river
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000011160 research Methods 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 11
- 230000002354 daily effect Effects 0.000 description 63
- 241000894007 species Species 0.000 description 46
- 230000004083 survival effect Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000005068 transpiration Effects 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000005445 natural material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/26—Government or public services
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Strategic Management (AREA)
- Human Resources & Organizations (AREA)
- Tourism & Hospitality (AREA)
- Economics (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- Marketing (AREA)
- Theoretical Computer Science (AREA)
- Development Economics (AREA)
- General Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Game Theory and Decision Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The embodiment of the invention provides a method for determining ecological water demand of a river channel, which comprises the following steps: determining a river channel section, wherein the river channel section is a section capable of acquiring natural flow of the section within a preset time; acquiring target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section within the preset time; according to the suitability level of the ecological water demand of the river channel and the target time flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels; and determining the flow of the ecological water demand at least based on the target time section ecological flow. The method for determining the ecological water demand of the river channel provided by the embodiment of the invention can improve the accuracy of determining the ecological water demand of the river channel and improve the ecological maintenance effect on the river channel.
Description
Technical Field
The embodiment of the invention relates to the field of water resource ecology, in particular to a method for determining ecological water demand of a river channel.
Background
In recent years, the natural process of the river is changed by various human activities such as continuous construction of wading projects, large-amount discharge of pollutants, urbanization construction and the like, so that the river cannot meet the requirements of various organisms in the river and in the riverbank and a series of ecological processes, the variety of species of the river ecosystem is reduced, and many endangered species are endangered for a long time.
In order to avoid the above situations, research methods on ecological water demand are proposed to obtain water demand meeting ecological requirements, wherein the ecological water demand of the river channel refers to water required for maintaining the natural structure and function of the ecological system of the river channel, and can be expressed by flow rate or flow rate and water level.
At present, the existing research method for the ecological water demand of the river channel determines the available water quantity by acquiring the total value of the ecological water demand of the river channel, namely the total water demand of the whole river channel, so as to realize the maintenance of the river channel ecology. However, in practical situations, the river water is usually used in a certain river reach of the river, but the water is not used in the whole river reach, for example, the water is used in the downstream of the river, so that the ecology in the upstream of the river is not affected, and therefore, the determination of the available water volume of the river reach according to the ecological water demand of the whole river is inaccurate and the maintenance effect on the ecology of the river is also affected.
Therefore, how to optimize the determination of the ecological water demand of the river channel to improve the ecological maintenance effect of the river channel becomes a technical problem which needs to be solved urgently.
Disclosure of Invention
The embodiment of the invention solves the technical problem of providing a method for determining the ecological water demand of a river channel so as to optimize the determination of the ecological water demand of the river channel and improve the ecological maintenance effect of the river channel.
In order to solve the above problems, an embodiment of the present invention provides a method for determining an ecological water demand of a river, including:
determining a river channel section, wherein the river channel section is a section capable of acquiring natural flow of the section within a preset time;
acquiring target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section within the preset time;
according to the suitability level of the ecological water demand of the river channel and the target time flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels;
and determining the flow of the ecological water demand at least based on the target time section ecological flow.
Optionally, the cross-sectional natural flow rate comprises a cross-sectional daily natural flow rate;
the step of obtaining the target time flow of the river channel section according to the natural section flow of the river channel section in the preset time comprises the following steps:
acquiring annual natural flow of each section in a preset time according to the daily natural flow of the section of the river channel section in the preset time;
acquiring the annual guarantee rate of each section by utilizing the annual natural flow data of each section, and determining a target guarantee rate;
acquiring the target time flow of the corresponding year according to the target guarantee rate to obtain the target time flow under the target guarantee rate;
the step of determining the target time section ecological flow of the river channel section corresponding to different suitability levels of the target time according to the suitability level of the ecological water demand of the river channel and the target time flow comprises the following steps:
and determining the target time section ecological flow of the river channel section corresponding to different suitability levels of the target time according to the suitability level of the ecological water demand of the river channel and the target time flow under the target guarantee rate.
Optionally, the cross-sectional natural flow rate comprises a cross-sectional daily natural flow rate;
the step of obtaining the target time flow of the river channel section according to the natural section flow of the river channel section in the preset time comprises the following steps:
acquiring target time flow at the same time in preset time according to the section daily natural flow of the river channel section in the preset time;
acquiring corresponding target time average flow according to the target time flow at the same time;
the step of determining the target time section ecological flow of the river channel section corresponding to different suitability levels of the target time according to the suitability level of the ecological water demand of the river channel and the target time flow comprises the following steps:
and determining the target time section ecological flow of the river channel section under different suitability levels corresponding to the target time according to the suitability level of the ecological water demand of the river channel and the corresponding target time average flow.
Optionally, the step of determining the river cross-section comprises:
determining an initial river channel section according to the position of a hydrological monitoring station, and acquiring the actually measured daily flow of the initial river channel section recorded by the hydrological monitoring station;
and when the recording time of the actual measurement daily flow of the initial river channel section meets the preset time requirement, determining the initial river channel section as the river channel section, and acquiring the natural flow of the section of the river channel section within the preset time based on the actual measurement daily flow.
Optionally, the section natural flow rate is an actually measured section daily natural flow rate, and the actually measured section daily natural flow rate is obtained through the following steps:
determining an initial research river reach according to the initial river section;
acquiring actual measurement daily flow, daily water consumption, daily evaporation water and daily cross-basin water regulation amount in a preset time according to the initial research river reach;
and acquiring the daily natural flow of the actually measured section according to the actually measured daily flow, the daily water consumption, the daily evaporated water quantity and the daily cross-basin water regulation quantity.
Optionally, the step of determining the river cross-section comprises:
acquiring river basin ecological data of the river channel, and constructing a distributed hydrological model of the river channel according to the river basin ecological data;
and determining the river channel section from the river channel according to a preset river channel section determining condition, and acquiring the natural section flow of the river channel section within a preset time by using the distributed hydrological model.
Optionally, the distributed hydrological model is a model with parameters adjusted by using the measured section natural flow.
Optionally, the method further comprises:
determining a research river reach and a section area according to the river section;
acquiring sensitive species of the researched river reach and habitat elements of the sensitive species, wherein the habitat elements comprise section water depth of target time and section flow velocity of the target time under different suitability levels;
acquiring target time-sensitive species ecological flow of the river cross section according to the cross section water depth, the cross section flow velocity and the cross section area;
the step of determining the flow of the ecological water demand based at least on the target time profile ecological flow comprises:
and acquiring the maximum target time ecological flow rate of the target time section ecological flow rate and the target time sensitive species ecological flow rate, and determining the maximum target time ecological flow rate as the flow rate of the ecological water demand.
Optionally, the method further comprises:
acquiring river channel terrain data of the river channel, and constructing a flow water level relation model of the river channel according to the river channel terrain data;
and determining the water level of the ecological water demand by utilizing the flow water level relation model and the flow of the ecological water demand.
Optionally, the flow-water level relation model is a model obtained by performing parameter adjustment by using the measured section natural flow and the measured section water level corresponding to the measured section natural flow.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the method for determining the ecological water demand of the river channel provided by the embodiment of the invention comprises the following steps: determining a river channel section, wherein the river channel section is a section capable of acquiring natural flow of the section within a preset time; acquiring target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section within the preset time; according to the suitability level of the ecological water demand of the river channel and the target time flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels; and determining the flow of the ecological water demand at least based on the target time section ecological flow. Therefore, the method for determining the ecological water demand of the river channel provided by the embodiment of the invention obtains the target time flow of the river channel cross section based on the cross section natural flow of the river channel cross section within the preset time, then further obtains the target time cross section ecological flow by combining the suitability grade of the ecological water demand of the river channel, and finally obtains the flow of the ecological water demand. Therefore, according to the method for determining the ecological water demand of the river channel provided by the embodiment of the invention, on one hand, the flow of the ecological water demand is determined based on the target time flow of the river channel section, so that the obtained flow of the ecological water demand represents the situation of the river reach including the river channel section, and is used for controlling the water consumption of the river reach including the river channel section, and the pertinence of the river reach within the river channel range is improved; on the other hand, the determined target time cross-section flow rate is different according to different target times, and the difference of the ecological water demand of the river channel at different times in one year is fully considered, so that the rationality of the use of water resources in the river channel can be improved; further, when the flow of the ecological water demand is determined, the suitability level of the river channel ecological water demand is taken into consideration, and the flow of the ecological water demand of the river channel under different ecological water demand suitability levels of the river reach including the river channel section is obtained, so that the water consumption of the river reach including the river channel section can be controlled according to the suitability level to be achieved, the accuracy of the determined ecological water demand is improved, and the ecological maintenance effect of the river channel is further improved.
In an alternative scheme, the method for determining the ecological water demand of the river provided by the embodiment of the invention further comprises the following steps: determining a research river reach and a section area according to the river section; acquiring sensitive species of the researched river reach and habitat elements of the sensitive species, wherein the habitat elements comprise water depth at a target time and cross-sectional flow velocity at the target time; acquiring the ecological flow of the target time-sensitive species according to the water depth, the cross-sectional flow velocity and the cross-sectional area; and acquiring the maximum target time ecological flow rate of the target time section ecological flow rate and the target time sensitive species ecological flow rate, and determining the maximum target time ecological flow rate as the flow rate of the ecological water demand. Therefore, when the flow of the ecological water demand is obtained, the ecological requirement of the river reach where the river cross section is located is considered, the ecological element of the sensitive species of the river reach where the river cross section is located is also considered, the ecological flow meeting the ecological requirement of the river reach and the maximum target time ecological flow of the ecological element of the sensitive species at the same time is determined as the flow of the ecological water demand, and therefore when the flow of the ecological water demand of the river reach where the river cross section is located is kept to meet the requirement, the ecological requirement of the river can be guaranteed, and the survival requirement of the sensitive species can be guaranteed.
Drawings
Fig. 1 is a schematic flow chart of a method for determining ecological water demand of a river according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a step of obtaining a target time flow of a river cross section by the method for determining an ecological water demand of a river according to the embodiment of the present invention;
fig. 3 is another schematic flow chart of the method for determining the ecological water demand of the river according to the embodiment of the present invention;
FIG. 4 is a 10 year round 10 North river towards sun station section day natural flow line graph in the water basin;
FIG. 5 is a model diagram of a relationship between section flow and water level at a north chuan chaos sunny station in a water basin.
Detailed Description
As known from the background art, the existing method for determining the ecological water demand of the river channel has the defects that the determined available water quantity of the river reach is inaccurate, and the maintenance effect on the river channel ecology is influenced.
In order to improve the ecological maintenance effect of the river channel, the embodiment of the invention provides a method for determining the ecological water demand of the river channel, which comprises the following steps:
determining a river channel section, wherein the river channel section is a section capable of acquiring natural flow of the section within a preset time;
acquiring target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section within the preset time;
according to the suitability level of the ecological water demand of the river channel and the target time flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels;
and determining the flow of the ecological water demand at least based on the target time section ecological flow.
Therefore, the method for determining the ecological water demand of the river channel provided by the embodiment of the invention obtains the target time flow of the river channel cross section based on the cross section natural flow of the river channel cross section within the preset time, then further obtains the target time cross section ecological flow by combining the suitability grade of the ecological water demand of the river channel, and finally obtains the flow of the ecological water demand.
Therefore, according to the method for determining the ecological water demand of the river channel provided by the embodiment of the invention, on one hand, the flow of the ecological water demand is determined based on the target time flow of the river channel section, so that the obtained flow of the ecological water demand represents the situation of the river reach including the river channel section, and is used for controlling the water consumption of the river reach including the river channel section, and the pertinence of the river reach within the river channel range is improved; on the other hand, the determined target time cross-section flow rate is different according to different target times, and the difference of the ecological water demand of the river channel at different times in one year is fully considered, so that the rationality of the use of water resources in the river channel can be improved; further, when the flow of the ecological water demand is determined, the suitability level of the river channel ecological water demand is taken into consideration, and the flow of the ecological water demand of the river channel under different ecological water demand suitability levels of the river reach including the river channel section is obtained, so that the water consumption of the river reach including the river channel section can be controlled according to the suitability level to be achieved, the accuracy of the determined ecological water demand is improved, and the ecological maintenance effect of the river channel is further improved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for determining ecological water demand of a river according to an embodiment of the present invention.
As shown in the figure, the method for determining the ecological water demand of the river channel provided by the embodiment of the invention comprises the following steps:
step S10: and determining a river channel section, wherein the river channel section is a section capable of acquiring the natural flow of the section within a preset time.
When determining the ecological water demand of the river channel, firstly determining the river channel section, wherein the river channel section for determining the ecological water demand of the river channel is a section capable of acquiring the natural flow of the section within a preset time.
It will be appreciated that the predetermined time can be determined as required, and of course, to ensure the accuracy of the finally obtained ecological water demand of the river channel, the predetermined time needs to be longer, for example, at least 10 years.
In one embodiment, the river profile may be determined by:
firstly, determining an initial river channel section according to the position of a hydrological monitoring station, and then acquiring the actually measured daily flow of the initial river channel section recorded by the hydrological monitoring station;
judging whether the recording time of the actual measurement daily flow of the initial river channel section meets the requirement of the preset time or not, if the recording time of the actual measurement daily flow of the initial river channel section meets the requirement of the preset time, determining the initial river channel section as the river channel section, and acquiring the natural flow of the section of the river channel section within the preset time based on the actual measurement daily natural flow.
The method can realize the determination of the river channel section and the determination of the natural flow of the section of the river channel section, and has the advantages of simple determination method, high efficiency and more accurate natural flow of the obtained section.
Of course, because the monitoring of hydrology monitoring station to actual measurement section natural flow is mostly daily flow, consequently, for reducing the acquisition degree of difficulty of section natural flow, the actual measurement section natural flow of the initial river course section that acquires can be for actual measurement section day natural flow, and in a specific implementation mode, actual measurement section day natural flow can obtain through following step:
firstly, determining an initial research river reach according to the initial river cross section; then, acquiring the actually measured daily flow, the daily water consumption, the daily evaporated water quantity and the daily cross-basin water regulation quantity in a preset time according to the initial research river reach; and finally, acquiring the daily natural flow of the actually measured section according to the actually measured daily flow, the daily water consumption, the daily evaporated water quantity and the daily cross-basin water regulation quantity.
It is understood that the initial river reach to be studied is a river reach including an initial river section, and specifically, one river reach may be set every 200m-m meters, and then the initial river reach to be studied may be any river reach including the initial river section within a range of 200m-300m, and of course, the initial river section may be an end point of the river reach or may be located in the middle of the river reach.
And determining an initial research river reach, and then acquiring water volume data such as actually measured daily flow, daily water consumption, daily evaporated water volume, daily cross-basin water regulation volume and the like in a preset time according to the initial research river reach.
The actually measured daily flow is the actual flow monitored by the hydrological station, the daily water consumption can be the sum of industrial water, agricultural water and domestic water obtained from a river reach in a river reach area, the daily evaporation capacity is the sum of the water surface evaporation capacity of the initially researched river reach and the daily transpiration capacity of aquatic plants in a riverside zone in the initially researched river reach, the cross-river basin water regulation capacity is the water regulation capacity between the initially researched river reach and other river reach within a preset time, the water regulation capacity comprehensively reflects the flow of the initially researched river reach, and the accuracy of the obtained flow is guaranteed.
Finally, the actual measurement section daily natural flow is obtained according to the actual measurement daily flow, the daily water consumption, the daily evaporation water quantity and the daily cross-basin water regulation quantity, and can be obtained by the following formula:
Wnatural substance (such as natural gas)＝WMeasured in fact+WIndustrial process+WAgricultural production+WLife saving+WEvaporation of+WTranspiration-WGuiding device
Wherein: wMeasured in fact-measured daily flows monitored by the hydrological station;
Windustrial processInitial research of daily industrial water in the river reach;
Wagricultural production-initial study of daily agricultural water in the river reach;
Wlife saving-initial study of daily domestic water in a river segment;
Wevaporation of-initially investigating the amount of water evaporated from the surface of the water in the river section;
Wtranspiration-initially investigating the daily transpiration of aquatic plants in the riparian zone in the river reach;
Wguiding deviceInitial study of daily cross-basin water regulation in the river reach.
When the initial river channel section is determined as the river channel section for determining the ecological water demand of the river channel, the obtained W can be directly usedNatural substance (such as natural gas)As the natural flow rate of the cross section of the river channel, the natural flow rate of the cross section is, of course, the natural flow rate of the cross section per day.
Besides the river channel section is determined by acquiring the daily natural flow of the actually measured section, the river channel section can be determined in other modes.
In another specific embodiment, in order to determine the river section, river basin ecological data of the river may be first obtained, and a distributed hydrological model of the river is constructed according to the river basin ecological data; and determining the river channel section from the river channel according to a preset river channel section determining condition, and acquiring the natural section flow of the river channel section within a preset time by using the distributed hydrological model.
It should be noted that the establishment of the distributed hydrological model of the river channel is based on ecological data of the river channel watershed, specifically, the ecological data may include basic data of topography, land utilization, soil type, vegetation type, hydrological weather and the like of the river channel watershed, and the established distributed hydrological model may combine all elements and links of water circulation to perform simulation, so as to obtain data including natural flow of the cross section, surface flow, underground flow, transpiration, silt migration and the like.
It can be understood that, in order to ensure the accuracy of the section natural flow obtained based on the distributed hydrological model, the measured section natural flow data is needed to be used to calibrate the parameters of the model, therefore, the selected river channel should be the river channel with the hydrological monitoring station and the monitoring data of the preset time, the data of the specific measured section natural flow can be obtained in the manner described above, and then the data is brought into the distributed hydrological model to adjust the parameters of the model, so as to obtain the adjusted distributed hydrological model.
It can be understood that the distributed hydrological model used for obtaining the natural flow of the cross section of the river channel within the preset time by using the distributed hydrological model is a model obtained by performing parameter adjustment by using the measured natural flow of the cross section.
And then, according to the requirement, determining a preset river channel section determining condition, determining the river channel section from the river channel, and acquiring the natural section flow of the river channel section within a preset time.
Specifically, the definite condition of river course section can be that the river face is broad relatively, belongs to the section of dark V type river valley to make things convenient for subsequent operation, based on the condition, can select wantonly in the river course within range, and do not receive the restriction that hydrology monitoring station set up the position, only need have hydrology monitoring station on the river course, and need not strictly restrict hydrology monitoring station in the river reach of studying, improved the degree of freedom that the river course section was selected, and can improve the convenience of subsequent operation.
Step S11: and acquiring the target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section in the preset time.
The river channel section is determined, the natural flow of the section of the river channel section in a preset time is obtained, and then the target time flow of the river channel section can be obtained.
The target time flow rate mentioned herein refers to the sectional natural flow rate of the target time, and is influenced by weather and rainfall, and the sectional natural flow rate of each season, month or week in a year may be different, so the target time may be determined as the first quarter, the second quarter, the third quarter and the fourth quarter in 1 year, or as the 1 month, 2 months, … …, 12 months in 1 year, or as the first week, the second week, … …, 52 weeks in 1 year, or may be determined by day, and the obtained time may be 1 month, 2 months, … …, 12 months, 31 days, etc.
Of course, when taking a value specifically, the total cross-section natural flow rate within the target time may be taken, and the average cross-section natural flow rate within the target time may also be taken.
The data monitored by the hydrological monitoring station are mostly daily flow, and the natural flow of the cross section obtained by the method for determining the natural flow of the cross section comprises the natural flow of the cross section daily, namely the natural flow of the cross section every day in preset time, and when the preset time is 10 years, the natural flow of the cross section every day in 10 years. Of course, the section daily natural flow rate may be the actually measured section daily natural flow rate, or may be a section daily natural flow rate measured and calculated by using a distributed hydrological model. And acquiring the section natural flow of the target time based on the section daily natural flow.
Referring to fig. 2, fig. 2 is a schematic flow chart of a step of obtaining a target time flow of a river cross section according to the method for determining an ecological water demand of a river according to an embodiment of the present invention.
As shown in the figure, in one embodiment, the target time flow of the river cross section can be obtained by the following steps:
step S110: and acquiring the annual natural flow of each section in a preset time according to the daily natural flow of the section of the river channel section in the preset time.
And acquiring the section daily natural flow of the river channel section within the preset time to acquire the section annual natural flow.
Such as: the predetermined time is 10 years, from 1990 to 2000, and then the sectional year natural flow in 1990 is obtained by summing up the sectional day natural flows per day in 1990, and the sectional year natural flow in 1991 is obtained by summing up the sectional day natural flows per day in 1991, and similarly, the sectional year natural flow in 10 years from 1990 to 2000 is obtained.
Step S111: and acquiring the annual guarantee rate of each section by utilizing the annual natural flow data of each section, and determining the target guarantee rate.
And (3) acquiring the guarantee rate of each year in the preset time by using the natural flow of the section year of each year in the preset time based on the calculation method of the guarantee rate, and determining the target guarantee rate which needs to be further used.
In one embodiment, the annual warranty rate may be calculated by:
(1) and sequencing the natural flow of the section year according to the sequence from small to large.
(2) Using empirical formulasAnd calculating the guarantee rate, wherein m is the ranking, and n is the number of years.
The following table is a specific example of calculating the assurance rate:
TABLE 1 fracture surface characterization table
Therefore, the guarantee rate of each year in the target time can be obtained, and the target guarantee rate can be further determined, for example, the target guarantee rate can be determined to be 90%.
Step S112: and acquiring the target time flow of the corresponding year according to the target guarantee rate to obtain the target time flow under the target guarantee rate.
And after the target guarantee rate is determined, further searching the year corresponding to the target guarantee rate, and further acquiring the target time flow according to the year.
Such as: based on the results in table 1, when the target guaranteed rate is determined to be 90%, 1970 with the guaranteed rate of 91.18% closest to the target guaranteed rate can be determined to be the target year, then the section daily natural flow rate in 1970 can be obtained, and further the target time flow rate can be obtained, when the target time is the section flow rate of each month in 1 year, the sum of the section natural flow rates of each day in 1 month can be obtained, and similarly, the section natural flow rate of each month in 12 months in 1 year, that is, the section natural flow rate of each month in 1 year with the guaranteed rate of 90% can be obtained.
By the method, the target time flow of the river channel cross section under different guarantee rates can be simply and conveniently obtained, so that the ecological water demand of the river channel under different guarantee rates can be determined.
Of course, in another specific embodiment, the target time flow of the river cross section meeting other requirements can also be obtained.
Specifically, firstly, acquiring target time flow at the same time in a preset time according to the section daily natural flow of the river channel section in the preset time; and then acquiring the corresponding target time average flow according to the target time flow at the same time.
Such as: according to the natural flow of the section day of the section of the river channel and within 10 years, the flow of 10 1 month in 10 years, the flow of each 10 month, … … and the flow of 10 12 months are obtained, and then the average value of the flow of 10 1 month is calculated to obtain the average flow of 1 month; calculating the average value of 10 flows of 2 months to obtain the average flow of 2 months; … …, respectively; the average of 10 flows for 12 months was calculated, resulting in a 12 month average flow.
And then, further acquiring the ecological water demand of the river channel under the condition of meeting the average flow by utilizing each average flow.
Therefore, the obtained ecological water demand of the river channel is an average value of a plurality of years, and the control of water under the natural flow of the average section is realized, so that the ecological water demand of the river channel is met.
Step S12: and determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels according to the suitability level of the ecological water demand of the river channel and the target time flow.
And obtaining the target time flow, and further determining the target time section ecological flow of the river channel section under different suitability levels by combining the suitability levels of the ecological water demand of the river channel.
In one embodiment, to ensure that the determined suitability level of the ecological water requirement of the river is more appropriate, 10% of the natural flow of the cross section is selected as an unsuitable level, 10% -30% of the natural flow of the cross section is selected as a general suitable level, 30% -45% of the natural flow of the cross section is selected as a medium suitable level, 45% -60% of the natural flow of the cross section is selected as a higher suitable level, and 60% of the natural flow of the cross section is selected as a high suitable level, which is mainly because the natural flow of the cross section of 10% is the minimum instantaneous flow for most aquatic organisms to maintain short-term survival and is also the minimum flow for maintaining the basic functions of the river; the natural flow of the section is 30 percent of the flow capable of maintaining the basic living form of the aquatic organisms; the natural flow of the section is 45 percent, so that a good habitat environment can be provided for the survival of most aquatic organisms; the cross-sectional natural flow of 60% can provide a major growth stage habitat for most aquatic organisms and for most recreational uses.
Of course, in other embodiments, other proportions may be set to determine the suitability level based on different needs, such as the rainfall in different months, or different periods (breeding periods or growth periods) of aquatic life, and different section natural flow proportions, i.e. the suitability level of the ecological water demand of the river, may be determined in different months.
Based on the determined target time flow and the suitability level, the target time section ecological flow can be determined, for example, the determined section flow (section flow or average flow under the guaranteed rate) of 1 month is multiplied by the section natural flow proportion corresponding to different suitability levels, so that the section ecological flow of 1 month of the river section under different suitability levels is obtained.
It can be understood that when the obtained target time flow is the target time flow under the target guarantee rate, the target time section ecological flow of the river channel section under different suitability levels corresponding to the target time is determined according to the suitability level of the ecological water demand of the river channel and the target time flow under the target guarantee rate; and when the obtained target time flow is the target time average flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels according to the suitability level of the ecological water demand of the river channel and the corresponding target time average flow.
Step S13: and determining the flow of the ecological water demand at least based on the target time section ecological flow.
After the ecological flow of the target time section is obtained, the flow of the ecological water demand can be determined. In a specific embodiment, the target time section ecological flow can be directly used as the flow of the ecological water demand when other section ecological flows are not obtained.
According to the method for determining the ecological water demand of the river channel provided by the embodiment of the invention, on one hand, the flow of the ecological water demand is determined based on the target time flow of the river channel section, so that the obtained flow of the ecological water demand represents the situation of the river reach including the river channel section, and therefore, the method is used for controlling the water consumption of the river reach including the river channel section, and the pertinence of the river reach within the river channel range is improved; on the other hand, the determined target time cross-section flow rate is different according to different target times, and the difference of the ecological water demand of the river channel at different times in one year is fully considered, so that the rationality of the use of water resources in the river channel can be improved; further, when the flow of the ecological water demand is determined, the suitability level of the river channel ecological water demand is taken into consideration, and the flow of the ecological water demand of the river channel under different ecological water demand suitability levels of the river reach including the river channel section is obtained, so that the water consumption of the river reach including the river channel section can be controlled according to the suitability level to be achieved, the accuracy of the determined ecological water demand is improved, and the ecological maintenance effect of the river channel is further improved.
Certainly, in some river reach, sensitive species may also live, and in the river reach with the sensitive species, not only the requirement for the ecological water requirement of the river channel of the common species but also the requirement for the ecological water requirement of the river channel for the survival of the sensitive species need to be met.
Referring to fig. 3, fig. 3 is another schematic flow chart of a method for determining ecological water demand of a river according to an embodiment of the present invention.
As shown in fig. 3, the method for determining the ecological water demand of the river provided by the embodiment of the invention includes the following steps:
step S20: and determining a river channel section, wherein the river channel section is a section capable of acquiring the natural flow of the section within a preset time.
Please refer to step S10 shown in fig. 1 for details of step S20, which are not described herein again.
Step S21: and acquiring the target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section in the preset time.
Please refer to step S11 shown in fig. 1 for details of step S21, which are not described herein again.
Step S22: according to the suitability grade of the ecological water demand of the river channel and the target time flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability grades
Please refer to step S12 shown in fig. 1 for details of step S22, which are not described herein again.
Step S23: and determining the section and the section area of the researched river according to the section of the river.
And determining the research river reach based on the determined river section, wherein the specific determination mode can be set as one river reach every 200m-300m, and the research river reach can be any river reach in the range of 200m-300m including the river section, and of course, the river section can be an end point of the research river reach or can be located in the middle of the research river reach.
Meanwhile, based on the determined river channel section, the basic information of the section is obtained through a section method, and then the section area is obtained.
It is understood that the step 23 only needs to be performed after the channel section is determined, and may be performed simultaneously with the step S21, or may be performed before the step S21 is performed.
Step S24: and acquiring sensitive species of the researched river reach and habitat elements of the sensitive species, wherein the habitat elements comprise section water depth of target time and section flow velocity of the target time under different suitability levels.
Based on the determined research river reach, determining sensitive species within the research river reach.
It is understood that the sensitive species may be endangered, vulnerable and heavily protected species in the national major protection records of wild animals (1988), the book of red skins of endangered animals in China (1998), the book of red skins of species in China (2004) and related provincial major protection records.
If the recorded sensitive species are visible within 50 years, the determination of the ecological water requirement of the river channel for determining the section of the river reach can be determined by adopting a method of existence of the sensitive species.
After the sensitive species of the river reach is researched, the habitat elements of the sensitive species can be obtained according to the record information about the sensitive species, and the specific habitat elements comprise the section water depth at the target time and the section flow rate at the target time.
It will be appreciated that when the target time is determined to be 12 months of 1 year, the water depth at the target time and the cross-sectional flow rate at the target time correspond to the cross-sectional water depth requirement and the cross-sectional flow rate requirement for the sensitive species for the 12 months.
Step S25: and acquiring the target time-sensitive species ecological flow of the river channel section under different suitability levels according to the section water depth, the section flow velocity and the section area.
And obtaining the depth of the section, the flow velocity of the section and the area of the section, then obtaining the flow of the target time-sensitive species, and further combining the percentages of different suitable grades to obtain the ecological flow of the target time-sensitive species according to the information.
Specifically, the target time-sensitive species flux can be obtained using the following formula:
Wsensitivity of＝SSection of*V*H
Wherein S isSection of-investigating the cross-sectional area of the river section;
v- -cross-sectional flow velocity;
h-depth of section water.
Step S26: and acquiring the maximum target time ecological flow rate of the target time section ecological flow rate and the target time sensitive species ecological flow rate, and determining the maximum target time ecological flow rate as the flow rate of the ecological water demand.
And obtaining the maximum target time ecological flow of the target time section ecological flow and the target time sensitive species ecological flow under the same suitable level, and determining the maximum target time ecological flow as the flow of the ecological water demand.
Therefore, in the river reach with the sensitive species, when the flow of the ecological water demand is obtained, the ecological requirements of the river reach where the river cross section is located are considered, the ecological elements of the sensitive species in the river reach where the river cross section is located are also considered, and the ecological flow meeting the ecological requirements of the river reach and the maximum target time ecological flow of the ecological elements of the sensitive species at the same time is determined as the flow of the ecological water demand, so that when the flow of the ecological water demand of the river reach where the river cross section is located is kept to meet the requirements, the ecological requirements of the river can be guaranteed, and the survival requirements of the sensitive species can also be guaranteed.
On the other hand, the ecological water demand of the river channel can be expressed by utilizing the section flow, in order to ensure the accuracy of the description of the ecological water demand of the river channel and improve the rationality of water use control, the ecological water demand of the river channel can be expressed by utilizing the water level, so that the condition of the section flow and the condition of the section water level need to be considered when the ecological water demand of the river channel is controlled, and the requirements of the ecological water demand of the river channel and the ecological water demand of the river channel are met.
Specifically, in another specific implementation manner, the method for determining the ecological water demand of the river provided by the embodiment of the present invention further includes:
acquiring river channel terrain data of the river channel, and constructing a flow water level relation model of the river channel according to the river channel terrain data;
and determining the water level of the ecological water demand by utilizing the flow water level relation model and the flow of the ecological water demand.
Specifically, river terrain data of a river channel can be measured by a section method, during measurement, the interval between river sections is 200m-300m, then a flow and water level relation model of the river channel is constructed based on the measured river terrain data, and of course, the constructed flow and water level relation model is also a model subjected to parameter adjustment by utilizing the natural flow of the measured section and the measured section water level corresponding to the natural flow of the measured section.
In addition, MIKE21 software may also be selected for model building.
After the model is constructed, the water level of the ecological water demand can be obtained after the flow of the ecological water demand is obtained, and the ecological water demand of the river channel can be determined in multiple aspects.
The following clearly and completely describes the specific flow and technical solutions in the embodiment of the present invention in connection with the specific application process of the north river in the water basin.
The specific implementation process is as follows:
step S20: and determining a river channel section, wherein the river channel section is a section capable of acquiring the natural flow of the section within a preset time.
Determining that the section of the north river towards the sun station of the water basin is a river section, wherein the section is provided with a national basic hydrological station towards the sun station, and the water level and flow data of the station can be used as verification data of a simulation result in the scheme. Referring to FIG. 4, FIG. 4 is a graph showing a break plane daily natural traffic broken line of the northward river lunar station in the water basin in 2016.
In addition, the river reach is wide in river course and high in habitat heterogeneity, and is suitable for developing ecological water demand research.
Step S21: and acquiring the target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section in the preset time.
The target time flow determined at this time is the flow for 12 months in the year when the target guarantee rate is 90%, which is not listed in detail here.
Step S22: and determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels according to the suitability level of the ecological water demand of the river channel and the target time flow.
See table 2 for a rating of suitability:
TABLE 2 suitability of sections for North river towards the sun station
The target time section ecological flow of the river channel section under different suitability levels of the target time refers to the target time section ecological flow of tables 5-8, and for convenience of calculation, the average target time section ecological flow per second of each month is taken here.
Step S23: and determining the section and the section area of the researched river according to the section of the river.
Determining the research river reach as a research river reach containing a section of the north river towards the sun station of the tidal basin, and determining the section area under the corresponding water depth, please refer to the following table:
TABLE 3 depth of section and area of section of North river towards the sun station
| Depth of water (m) | 0.4 | 0.6 | 0.8 | 1 | 1.5 |
| Cross sectional area (m)2) | 1.3 | 2.45 | 4.81 | 6.09 | 16.34 |
Step S24: and acquiring sensitive species of the researched river reach and habitat elements of the sensitive species, wherein the habitat elements comprise section water depth of target time and section flow velocity of the target time under different suitability levels.
For the classification of different suitability grades, see table 2, and for the sectional water depth at the target time and the sectional flow rate at the target time under different suitability grades, see table 4 specifically:
TABLE 4 Cross-sectional water depth at target time and cross-sectional flow velocity at target time for sensitive species at different fitness levels
Step S25: and acquiring target time sensitive species ecological flow of the river channel cross section under different suitability levels according to the cross section water depth, the cross section flow velocity and the cross section area, specifically referring to the target time sensitive species ecological flow in tables 5-8, and acquiring average target time cross section ecological flow per second of each month for convenient calculation.
Step S26: acquiring the maximum target time ecological flow of the target time section ecological flow and the target time sensitive species ecological flow based on the target time section ecological flow and the target time sensitive species ecological flow, determining the maximum target time ecological flow as the ecological water demand flow, specifically referring to the ecological water demand flows in tables 5-8, and obtaining the ecological water demand monthly flow through time conversion operation.
Adding the monthly flow of the ecological water demand to obtain the annual flow.
Then, acquiring river terrain data of the river channel, and constructing a flow water level relation model of the river channel according to the river terrain data; and determining the water level of the ecological water demand by utilizing the flow water level relation model and the flow of the ecological water demand.
Referring to fig. 5, fig. 5 is a cross-sectional flow water level relation model diagram of north river of the huang river basin, wherein the natural runoff is the flow of the ecological water demand, and the flow of the average ecological water demand per second of each month is taken here.
Finally, the flow and the water level of the ecological water demand of the river channel on the river channel cross section of each month under different suitability levels are obtained, please refer to table 9.
Therefore, according to the method for determining the ecological water demand of the river channel provided by the embodiment of the invention, on one hand, the flow of the ecological water demand is determined based on the target time flow of the river channel section, so that the obtained flow of the ecological water demand represents the situation of the river reach including the river channel section, and is used for controlling the water consumption of the river reach including the river channel section, and the pertinence of the river reach within the river channel range is improved; on the other hand, the determined target time cross-section flow rate is different according to different target times, and the difference of the ecological water demand of the river channel at different times in one year is fully considered, so that the rationality of the use of water resources in the river channel can be improved; further, when the flow of the ecological water demand is determined, the suitability level of the river channel ecological water demand is taken into consideration, and the flow of the ecological water demand of the river channel under different ecological water demand suitability levels of the river reach including the river channel section is obtained, so that the water consumption of the river reach including the river channel section can be controlled according to the suitability level to be achieved, the accuracy of the determined ecological water demand is improved, and the ecological maintenance effect of the river channel is further improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the embodiments of the present invention have been disclosed, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method for determining ecological water demand of a river channel is characterized by comprising the following steps:
determining a river channel section, wherein the river channel section is a section capable of acquiring natural flow of the section within a preset time;
acquiring target time flow of the river channel cross section according to the natural cross section flow of the river channel cross section within the preset time;
according to the suitability level of the ecological water demand of the river channel and the target time flow, determining the target time section ecological flow of the river channel section corresponding to the target time under different suitability levels;
and determining the flow of the ecological water demand at least based on the target time section ecological flow.
2. The method for determining the ecological water demand of the riverway according to claim 1, wherein the section natural flow comprises a section day natural flow;
the step of obtaining the target time flow of the river channel section according to the natural section flow of the river channel section in the preset time comprises the following steps:
acquiring annual natural flow of each section in a preset time according to the daily natural flow of the section of the river channel section in the preset time;
acquiring the annual guarantee rate of each section by utilizing the annual natural flow data of each section, and determining a target guarantee rate;
acquiring the target time flow of the corresponding year according to the target guarantee rate to obtain the target time flow under the target guarantee rate;
the step of determining the target time section ecological flow of the river channel section corresponding to different suitability levels of the target time according to the suitability level of the ecological water demand of the river channel and the target time flow comprises the following steps:
and determining the target time section ecological flow of the river channel section corresponding to different suitability levels of the target time according to the suitability level of the ecological water demand of the river channel and the target time flow under the target guarantee rate.
3. The method for determining the ecological water demand of the riverway according to claim 2, wherein the section natural flow comprises a section day natural flow;
the step of obtaining the target time flow of the river channel section according to the natural section flow of the river channel section in the preset time comprises the following steps:
acquiring target time flow at the same time in preset time according to the section daily natural flow of the river channel section in the preset time;
acquiring corresponding target time average flow according to the target time flow at the same time;
the step of determining the target time section ecological flow of the river channel section corresponding to different suitability levels of the target time according to the suitability level of the ecological water demand of the river channel and the target time flow comprises the following steps:
and determining the target time section ecological flow of the river channel section under different suitability levels corresponding to the target time according to the suitability level of the ecological water demand of the river channel and the corresponding target time average flow.
4. The method for determining the ecological water demand of the river channel according to claim 1, wherein the step of determining the river channel section comprises the following steps:
determining an initial river channel section according to the position of a hydrological monitoring station, and acquiring the actually measured daily flow of the initial river channel section recorded by the hydrological monitoring station;
and when the recording time of the actual measurement daily flow of the initial river channel section meets the preset time requirement, determining the initial river channel section as the river channel section, and acquiring the natural flow of the section of the river channel section within the preset time based on the actual measurement daily flow.
5. The method for determining the ecological water demand of the river channel according to claim 4, wherein the section natural flow rate is an actually measured section daily natural flow rate, and the actually measured section daily natural flow rate is obtained by the following steps:
determining an initial research river reach according to the initial river section;
acquiring actual measurement daily flow, daily water consumption, daily evaporation water and daily cross-basin water regulation amount in a preset time according to the initial research river reach;
and acquiring the daily natural flow of the actually measured section according to the actually measured daily flow, the daily water consumption, the daily evaporated water quantity and the daily cross-basin water regulation quantity.
6. The method for determining the ecological water demand of the river channel according to claim 1, wherein the step of determining the river channel section comprises the following steps:
acquiring river basin ecological data of the river channel, and constructing a distributed hydrological model of the river channel according to the river basin ecological data;
and determining the river channel section from the river channel according to a preset river channel section determining condition, and acquiring the natural section flow of the river channel section within a preset time by using the distributed hydrological model.
7. The method for determining the ecological water demand of the river channel according to claim 6, wherein the distributed hydrological model is a model which is subjected to parameter adjustment by utilizing the measured section natural flow.
8. The method for determining the ecological water demand of a river according to any one of claims 1 to 7, further comprising:
determining a research river reach and a section area according to the river section;
acquiring sensitive species of the researched river reach and habitat elements of the sensitive species, wherein the habitat elements comprise section water depth of target time and section flow velocity of the target time under different suitability levels;
acquiring target time-sensitive species ecological flow of the river cross section according to the cross section water depth, the cross section flow velocity and the cross section area;
the step of determining the flow of the ecological water demand based at least on the target time profile ecological flow comprises:
and acquiring the maximum target time ecological flow rate of the target time section ecological flow rate and the target time sensitive species ecological flow rate, and determining the maximum target time ecological flow rate as the flow rate of the ecological water demand.
9. The method for determining the ecological water demand of the river according to claim 8, further comprising:
acquiring river channel terrain data of the river channel, and constructing a flow water level relation model of the river channel according to the river channel terrain data;
and determining the water level of the ecological water demand by utilizing the flow water level relation model and the flow of the ecological water demand.
10. The method for determining the ecological water demand of the river according to claim 9, wherein the flow and water level relationship model is a model obtained by performing parameter adjustment by using the measured section natural flow and the measured section water level corresponding to the measured section natural flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910020.5A CN110689193B (en) | 2019-09-25 | 2019-09-25 | Method for determining ecological water demand of river channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910020.5A CN110689193B (en) | 2019-09-25 | 2019-09-25 | Method for determining ecological water demand of river channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110689193A true CN110689193A (en) | 2020-01-14 |
| CN110689193B CN110689193B (en) | 2022-11-29 |
Family
ID=69110203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910910020.5A Active CN110689193B (en) | 2019-09-25 | 2019-09-25 | Method for determining ecological water demand of river channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110689193B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111460674A (en) * | 2020-04-09 | 2020-07-28 | 河海大学 | Flood pulse design method for ecological flow process |
| CN111753680A (en) * | 2020-06-09 | 2020-10-09 | 生态环境部卫星环境应用中心 | High-resolution satellite data-based river ecological flow guarantee degree remote sensing rapid discrimination method |
| CN111985106A (en) * | 2020-08-20 | 2020-11-24 | 三峡大学 | Distributed hydrological model parameter calibration method based on multipoint parallel correction |
| CN112528574A (en) * | 2020-12-18 | 2021-03-19 | 中国水利水电科学研究院 | Method and device for calculating ecological water demand of wetland |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106021854A (en) * | 2016-05-06 | 2016-10-12 | 西安理工大学 | A natural river course cross section stage-discharge relation determining method |
| WO2017181547A1 (en) * | 2016-04-18 | 2017-10-26 | 朱小涛 | Method for ecological restoration of vegetation in spoil area |
| CN107609290A (en) * | 2017-09-22 | 2018-01-19 | 长江水利委员会长江科学院 | A kind of river ecological flow using benthon diversity as target determines method |
| CN109101687A (en) * | 2018-07-05 | 2018-12-28 | 沈阳建筑大学 | A kind of Water Requirement calculation method based on gate dam subregion |
| CN109635514A (en) * | 2019-01-21 | 2019-04-16 | 黄河勘测规划设计研究院有限公司 | Ecological basic flow determines method and system in a kind of river |
-
2019
- 2019-09-25 CN CN201910910020.5A patent/CN110689193B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181547A1 (en) * | 2016-04-18 | 2017-10-26 | 朱小涛 | Method for ecological restoration of vegetation in spoil area |
| CN106021854A (en) * | 2016-05-06 | 2016-10-12 | 西安理工大学 | A natural river course cross section stage-discharge relation determining method |
| CN107609290A (en) * | 2017-09-22 | 2018-01-19 | 长江水利委员会长江科学院 | A kind of river ecological flow using benthon diversity as target determines method |
| CN109101687A (en) * | 2018-07-05 | 2018-12-28 | 沈阳建筑大学 | A kind of Water Requirement calculation method based on gate dam subregion |
| CN109635514A (en) * | 2019-01-21 | 2019-04-16 | 黄河勘测规划设计研究院有限公司 | Ecological basic flow determines method and system in a kind of river |
Non-Patent Citations (2)
| Title |
|---|
| 刘静等: "随机流量历时曲线及其在生态流量计算中的应用", 《南水北调与水利科技》 * |
| 孙涛等: "基于生态目标的河道生态环境需水量计算", 《环境科学》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111460674A (en) * | 2020-04-09 | 2020-07-28 | 河海大学 | Flood pulse design method for ecological flow process |
| CN111460674B (en) * | 2020-04-09 | 2021-06-25 | 河海大学 | Flood pulse design method for ecological flow process |
| CN111753680A (en) * | 2020-06-09 | 2020-10-09 | 生态环境部卫星环境应用中心 | High-resolution satellite data-based river ecological flow guarantee degree remote sensing rapid discrimination method |
| CN111985106A (en) * | 2020-08-20 | 2020-11-24 | 三峡大学 | Distributed hydrological model parameter calibration method based on multipoint parallel correction |
| CN111985106B (en) * | 2020-08-20 | 2021-10-15 | 三峡大学 | Distributed hydrological model parameter calibration method based on multipoint parallel correction |
| CN112528574A (en) * | 2020-12-18 | 2021-03-19 | 中国水利水电科学研究院 | Method and device for calculating ecological water demand of wetland |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110689193B (en) | 2022-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110689193B (en) | Method for determining ecological water demand of river channel | |
| Sellami et al. | Quantifying hydrological responses of small Mediterranean catchments under climate change projections | |
| Kelble et al. | Salinity patterns of Florida Bay | |
| LeBlanc et al. | Modeling the effects of land use change on the water temperature in unregulated urban streams | |
| Pal | Impact of water diversion on hydrological regime of the Atreyee river of Indo-Bangladesh | |
| Kuti et al. | Modelling of sediment yield using the soil and water assessment tool (SWAT) model: a case study of the Chanchaga Watersheds, Nigeria | |
| Van Kirk et al. | Relative Effects of Climate and Water Use on Base‐Flow Trends in the Lower Klamath Basin 1 | |
| Phomcha et al. | Predicting sediment discharge in an agricultural watershed: a case study of the Lam Sonthi watershed, Thailand | |
| Jiang et al. | Oxythermal habitat parameters and identifying cisco refuge lakes in Minnesota under future climate scenarios using variable benchmark periods | |
| Scavia et al. | St. Clair-Detroit River system: Phosphorus mass balance and implications for Lake Erie load reduction, monitoring, and climate change | |
| Yan et al. | Modeling the hydrological effects of climate and land use/cover changes in Chinese lowland polder using an improved WALRUS model | |
| Weissinger et al. | Linking climate to changing discharge at springs in Arches National Park, Utah, USA | |
| Selbig | Simulating the effect of climate change on stream temperature in the Trout Lake Watershed, Wisconsin | |
| CN114818324A (en) | Method, device, medium and equipment for automatically regulating and controlling water quantity and water quality of basin scale | |
| Tzoraki et al. | Assessing the flow alteration of temporary streams under current conditions and changing climate by Soil and Water Assessment Tool model | |
| Oduor et al. | Effects of climate change on streamflow and nitrate pollution in an agricultural Mediterranean watershed in Northern Spain | |
| Piniewski et al. | Environmental water quantity projections under market-driven and sustainability-driven future scenarios in the Narew basin, Poland | |
| Stoianov et al. | A framework linking urban park land use with pond water quality | |
| Beaupré et al. | Comparison of a deterministic and statistical approach for the prediction of thermal indices in regulated and unregulated river reaches: case study of the Fourchue River (Québec, Canada) | |
| Hiscock et al. | An integrated assessment of long-term changes in the hydrology of three lowland rivers in eastern England | |
| Troin et al. | Rainfall–runoff modeling of recent hydroclimatic change in a subtropical lake catchment: Laguna Mar Chiquita, Argentina | |
| Theara et al. | Integrated modeling to assess flow changes due to future dam development and operation in Stung Sen River of Tonle Sap Lake Basin, Cambodia | |
| Derib | Balancing water availability and water demand in the Blue Nile: A case study of Gumara watershed in Ethiopia | |
| Cooper et al. | Salmonid habitat and population capacity estimates for steelhead trout and Chinook salmon upstream of Scott Dam in the Eel River, California | |
| Park et al. | Estimation of least ecological streamflow through long-term habitat evaluation using stream hydrodynamics and water quality factors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |