CN110544046A - Wetland ecosystem stability evaluation method and system - Google Patents
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Abstract
the embodiment of the invention discloses a method and a system for evaluating the stability of a wetland ecosystem, wherein the method comprises the following steps: providing a plurality of wetland evaluation indexes of a target wetland and a judgment matrix aiming at the wetland evaluation indexes; obtaining the multiple index weights according to the multiple evaluation indexes and the judgment matrix; acquiring a plurality of index data of the target wetland; obtaining a plurality of stability coefficients according to the plurality of index data and a preset index data and stability coefficient corresponding relation table; obtaining the stability score of the target wetland according to the index weights and the stability coefficients; and obtaining the stability result of the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table. The invention has the following advantages: stability results can be obtained for the characteristics of the wetland.
Description
Technical Field
The embodiment of the invention relates to the technical field of wetland ecology, in particular to a method and a system for evaluating the stability of a wetland ecosystem.
background
The wetland is an excessive zone between land and an open water body, is a unique ecological system with multiple functions formed by the interaction of water and land, belongs to neither a land ecological system nor an aquatic ecological system, is the ecological system with the richest biodiversity and the highest ecological function in the nature, and has various ecological and environmental functions of resisting flood, adjusting climate, maintaining biodiversity, keeping regional ecological balance and the like.
The stability of the ecosystem is an important characteristic of the ecosystem structure and function which determines the system casualty, and the research on the stability of the ecosystem has great significance not only in theory but also in practice.
since the 50 s of the 20 th century, after the ecological system stability theory was proposed by plant ecologist MacAnhur and animal ecologist Elto in turn, a great deal of research is made by many domestic and foreign scholars around the definition of the ecological system stability, and the ecological system stability is explained from different angles. Pimm statistics summarizes 45 different meanings of ecosystem stability, and Volker considers the ecosystem stability to include three aspects of restoring force, durability and elasticity of the ecosystem; ecosystem stability is considered by the Umbelliferae to include 4 different but related meanings, such as ecosystem variability or constancy, persistence or endurance, resistance or resistance, resilience or resilience; the great willow and the like think that the concrete representation of the stability of the ecosystem is the response of the ecosystem to external interference and the capacity of the ecosystem to adapt to external conditions.
How to judge that the ecosystem is stable needs to be evaluated. In contrast, many attempts have been made by scholars at home and abroad, and Odum proposes the characteristics of 22 indexes of a stable ecosystem in 7 aspects of community energy, community structure, nutrient substance circulation, life history and the like; when the health evaluation system of the Liaohe river mouth wetland ecosystem is constructed, 20 evaluation indexes such as precipitation, sewage discharge and runoff vegetation landscape are selected to evaluate the stability of the ecosystem from the aspects of water environment health, biodiversity, ecosystem elasticity, human pressure disturbance and the like. The stability of the ecological system of the lakeside wetland is divided into the overall stability and the structural stability of the system according to the generation reason of the stability of the ecological system when the stability of the ecological system of the lakeside wetland is evaluated, and the biological diversity index, the specific gravity of a natural protection area and the natural disaster grade are used as overall stability evaluation indexes, so that the indexes are quantized, and the structural stability of the ecological system of the lakeside wetland is accurately analyzed.
The evaluation of the stability of the ecosystem is the most direct application of the stability theory of the ecosystem in practice, and the evaluation index is very important in monitoring the wetland character and evaluating the safety of the wetland character, but at present, some problems still exist in the evaluation of the stability of the ecosystem, such as unrepresentative index and unclear index level division.
Disclosure of Invention
Therefore, the embodiment of the invention provides a method and a system for evaluating the stability of a wetland ecosystem, which aim to solve the problem that the stability of the wetland ecosystem is difficult to accurately evaluate in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
The embodiment of the first aspect of the invention discloses a method for evaluating the stability of a wetland ecosystem, which comprises the following steps: providing a plurality of wetland evaluation indexes of a target wetland and a judgment matrix aiming at the wetland evaluation indexes; obtaining the index weights according to the evaluation indexes and the judgment matrix, wherein the rating indexes are in one-to-one correspondence with the index weights; acquiring a plurality of index data of the target wetland, wherein the index data correspond to the wetland evaluation indexes one to one; obtaining a plurality of stability coefficients according to the plurality of index data and a preset index data and stability coefficient corresponding relation table, wherein the plurality of index data and the plurality of stability coefficients are in one-to-one correspondence; obtaining the stability score of the target wetland according to the index weights and the stability coefficients; and obtaining the stability result of the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table.
Further, the obtaining the multiple index weights according to the multiple evaluation indexes and the determination matrix specifically includes:
Calculating the product Mi of each row of the judgment matrix:
Wherein, alpha ij is the element of the ith row and the jth column of the judgment matrix, and the n-th square root of Mi is calculated
Carrying out normalization processing on the vector to obtain a weight WT:
W＝(W,W,…,W)。
Further, the plurality of wetland evaluation indexes comprise a plurality of primary evaluation indexes, and each primary evaluation index comprises a plurality of secondary evaluation indexes.
Further, the plurality of first-level evaluation indexes comprise wetland ecological environment indexes, wetland service function indexes and human social influence indexes.
further, the plurality of wetland evaluation indexes include: wetland ecological environment indexes including precipitation, evaporation, soil properties, wetland water quality, wetland area change, landscape diversity index, landscape uniformity index and landscape fragmentation index; the wetland service function indexes comprise: the wetland has the functions of water storage and flood regulation, purification, biological diversity maintenance, biological habitat providing, substance production and erosion control; the human social influence indicators include: population density, population natural growth rate, surrounding population quality, per capita pure income, pesticide and fertilizer application strength, wetland protection consciousness, policy and regulation penetration strength, wetland management level and environmental protection investment index.
The embodiment of the second aspect of the invention discloses a wetland ecosystem stability evaluation system, which comprises: the system comprises a providing module, a judging module and a judging module, wherein the providing module is used for providing a plurality of wetland evaluation indexes of a target wetland and a judging matrix aiming at the wetland evaluation indexes; the acquisition module is used for acquiring a plurality of index data of the target wetland; the processing module is used for obtaining the index weights according to the evaluation indexes and the judgment matrix, obtaining a plurality of stability coefficients according to the index data and a preset index data and stability coefficient corresponding relation table, further obtaining the stability score of the target wetland according to the index weights and the stability coefficients, and obtaining the stability result of the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table; the index data correspond to the wetland evaluation indexes one by one; the plurality of rating indexes and the plurality of index weights are arranged in a one-to-one correspondence manner; the index data and the stability coefficients are in one-to-one correspondence.
Further, the processing module is specifically configured to calculate a product Mi of each row of the determination matrix:
Wherein, alpha ij is the element of the ith row and the jth column of the judgment matrix, and the n-th square root of Mi is calculated
Carrying out normalization processing on the vector to obtain a weight WT:
W＝(W,W,…,W)。
Further, the plurality of wetland evaluation indexes comprise a plurality of primary evaluation indexes, and each primary evaluation index comprises a plurality of secondary evaluation indexes.
Further, the plurality of first-level evaluation indexes comprise wetland ecological environment indexes, wetland service function indexes and human social influence indexes.
further, the plurality of wetland evaluation indexes include: wetland ecological environment indexes including precipitation, evaporation, soil properties, wetland water quality, wetland area change, landscape diversity index, landscape uniformity index and landscape fragmentation index; the wetland service function indexes comprise: the wetland has the functions of water storage and flood regulation, purification, biological diversity maintenance, biological habitat providing, substance production and erosion control; the human social influence indicators include: population density, population natural growth rate, surrounding population quality, per capita pure income, pesticide and fertilizer application strength, wetland protection consciousness, policy and regulation penetration strength, wetland management level and environmental protection investment index.
the invention has the following advantages:
Providing a plurality of corresponding wetland evaluation indexes and judgment matrixes according to the characteristics of the wetland, and further obtaining index weights corresponding to the plurality of wetland evaluation indexes; and correspondingly obtaining a stability coefficient according to the index data of the wetland, and further obtaining a stability score of the target wetland according to the index weight and the stability coefficient so as to obtain a stability result of the wetland. The invention can obtain stability result aiming at the characteristics of the wetland.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
the structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
FIG. 1 is a flow chart of a wetland ecosystem stability assessment method according to an embodiment of the invention;
fig. 2 is a structural block diagram of the wetland ecosystem stability evaluation system in the embodiment of the invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
in the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a flow chart of the wetland ecosystem stability evaluation method in the embodiment of the invention. As shown in fig. 1, the method for evaluating the stability of a wetland ecosystem according to the embodiment of the present invention includes:
S1: and providing a plurality of wetland evaluation indexes of the target wetland and a judgment matrix aiming at the wetland evaluation indexes.
In one embodiment of the invention, the plurality of wetland evaluation indexes of the target wetland comprise a plurality of primary evaluation indexes, and each primary evaluation index comprises a plurality of secondary evaluation indexes.
TABLE 1
Table 1 is a wetland ecosystem stability evaluation index system. As shown in table 1, the primary evaluation indexes include: wetland ecological environment index B1, wetland service function index B2 and human social influence index B3.
the wetland ecological environment index B1 comprises: precipitation C1, evaporation C2, soil property C3, wetland water quality C4, wetland area change C5, landscape diversity index C6, landscape uniformity index C7 and landscape fragmentation index C8.
the precipitation C1 is the annual average precipitation of wetland area, is an important index for describing climate, and can be obtained from local meteorological observation data.
The evaporation rate C2 is the average annual evaporation rate of the wetland area and can be obtained from local meteorological observation data.
And the soil property C3 reflects the characteristics of the non-biological components of the wetland and directly determines the growth state of the wetland ecosystem producers. The method is considered from indexes such as soil organic matters, ammonium nitrogen nitrate, pesticide residues, soil biological enzyme activity and the like by combining the results of local general survey on soil properties.
The wetland water quality C4 is evaluated according to the water quality standard of class III waters in the Standard of environmental quality of surface Water.
The wetland area change C5 reflects the current situation and trend of wetland restoration, not only reflects the natural attributes of the wetland type structure, but also reflects the comprehensive benefits of human factors and natural factors, and is expressed by the percentage of the annual increased wetland area to the existing wetland area.
landscape diversity index C6, refers to the diversity and variability of different types of landscapes in terms of spatial structure, functional mechanism and temporal dynamics. Different ecological structures of the wetland can be divided into landscape unit patches, and the ecological environment condition of the target wetland is obtained by quantitatively analyzing the characteristic index of the landscape spatial pattern.
And the landscape uniformity index C7 is used for reflecting the non-uniformity degree of each plaque on the landscape distribution.
The landscape fragmentation index C8 can reflect the interference degree of human beings on the landscape structure.
The wetland service function index B2 comprises: wetland water storage and flood control function C9, purification function C10, biological diversity maintenance function C11, biological habitat providing function C12, substance production function C13 and erosion control function C14.
The wetland water storage and flood regulation function C9 refers to the capacity of wetland swamps to temporarily store and discharge flood water slowly, so that the threat of flood water is relieved. The regulation and storage capacity of the wetland can change the depth of the swamp or the area of the water bath, thereby changing the growth quantity of plants in the wetland.
The purification function C10 refers to the residue of pesticide and fertilizer used in agricultural production around the wetland, and a series of physical, chemical and biological functions occur when surface runoff passes through the wetland, so that the pollution is eliminated or reduced.
The function of maintaining the biodiversity C11 means that the wetland is an important genetic gene bank and has important significance for maintaining the biodiversity and the survival of wild biological populations.
Providing a biological habitat C12 means that wetland provides conditions suitable for many organisms to live due to its unique conditions, and they use wetland for living, foraging, drinking, breeding, and forming important biological communities, expressed in terms of species of benthonic animals.
the substance production function C13 means that the wetland has strong substance production function and contains rich animal and plant resources.
The erosion control capability C14 is to prevent soil erosion by wind and water, and is expressed by the change rate of wind erosion and water erosion.
The human social influence indexes B3 comprise population density C15, natural population growth rate C16, surrounding population quality C17, per capita pure income C18, pesticide, chemical fertilizer application strength C19, wetland protection awareness C20, policy and regulation implementation strength C21, wetland management level C22 and environmental protection investment index C23.
The population density C15 represents the density of population, reflects the interference intensity of human beings on the wetland, and is expressed as (man/km 2).
the natural population growth rate C16 is the number of people maintained by the wetland ecosystem, reflecting the external pressure to which the wetland ecosystem is subjected.
The peripheral demographics C17 is expressed as a percentage of the degree of culture above junior middle school over the peripheral population.
The per capita income C18 is used for measuring the living standard of people and reflecting the contribution of the wetland ecosystem to external people. Expressed in human-living annual income.
the pesticide and fertilizer application strength C19 reflects the degree of human pollution of the wetland and also reflects the external input subsidy maintained by the wetland ecosystem, and is an external pressure index of the stability of the wetland ecosystem. The application amount of the fertilizer and the pesticide is counted per hectare per year.
The wetland protection consciousness C20 reflects the state of the wetland protection consciousness of people, and counts the proportion of people with wetland protection consciousness in the total population.
The policy and regulation implementation degree C21 reflects the scientificity of wetland policy to understand the proportion statistics of the population to the total population of relevant policy and regulation.
The wetland management level C22 reflects the scientific conditions of the wetland protection consciousness and the wetland policy of people, and is measured by the overall level of a wetland management team by adopting a qualitative method.
the environmental investment index C23 is expressed by the percentage of wetland environmental investment costs per year to the total production value (GDP) of the year.
In the application process of the analytic hierarchy process, a judgment matrix needs to be given to each index, and after normalization processing, the score of each index is objective. When the analytic hierarchy process is applied, firstly, a judgment quantization grade table is established:
TABLE 2
An a-B decision matrix was constructed according to table 2:
| A | B1 | B2 | B3 |
| B1 | 1 | 3 | 2 |
| B2 | 1/3 | 1 | 2 |
| B3 | 1/2 | 1/2 | 1 |
TABLE 3
S2: and obtaining a plurality of index weights according to the plurality of evaluation indexes and the judgment matrix. The plurality of rating indexes and the plurality of index weights are arranged in a one-to-one correspondence mode.
Specifically, step S2 includes:
S2-1: calculating the product Mi of each row of the judgment matrix:
Wherein α ij is an element in the ith row and the jth column of the judgment matrix.
s2-2: calculating the n-th square root of Mi
S2-3: carrying out normalization processing on the vector to obtain a weight WT:
W＝(W,W,…,W)。
For the first-level index, the weights are as follows:
TABLE 4
For the second-level index, the weights are respectively:
TABLE 5
TABLE 6
TABLE 7
In table 5, C11 represents the ratio of the precipitation amount C1 of the first item to the precipitation amount C1 of the first item of the wetland ecological environment index B1, C12 represents the ratio of the precipitation amount C1 of the first item to the evaporation amount C2 of the second item of the wetland ecological environment index B1, and so on.
In table 6, C21 represents the ratio of the cleansing function C10 of the first index to the cleansing function C10 of the first index of the wetland service function index B2, C22 represents the ratio of the cleansing function C10 of the first index to the maintenance biodiversity function C11 of the second index of the wetland service function index B2, and so on.
In table 7, C31 represents the ratio of the population density C15 of the first index to the population density C15 of the first index of the human social influence index B3, C32 represents the ratio of the population density C15 of the first index to the population natural growth rate C16 of the second index of the human social influence index B3, and so on.
a weight calculation table of the wetland ecosystem stability evaluation index system at each level can be obtained according to tables 4-7, and is shown in a table 8.
TABLE 8
s3: and acquiring a plurality of index data of the target wetland. The plurality of index data correspond to the plurality of wetland evaluation indexes one to one.
specifically, the related report shows specific data corresponding to each index in table 8.
S4: and obtaining a plurality of stability coefficients according to the plurality of index data and a preset index data and stability coefficient corresponding relation table, wherein the plurality of index data and the plurality of stability coefficients are in one-to-one correspondence.
Specifically, according to a stability evaluation index system and the relationship among indexes, a wetland ecosystem stability evaluation mathematical model is established:
wherein R is the wetland ecosystem stability index; wi is the ith index weight; vi is the stability coefficient of the i-th index. The stability was in turn divided into the following table 9.
| Grade | 0-2 | 3-4 | 5-6 | 7-8 | 9-10 |
| degree of stability | Is very unstable | Instability of the film | slight stabilization | moderate stability | High stability |
TABLE 9
Watch 10
providing a corresponding relation table of index data and stability coefficient, wherein for precipitation C1, the index data is 216.3 mm, and the corresponding stability coefficient is 8; for example, for the evaporation amount C2, the index data is 275 mm, and the corresponding stability factor is 7.
And finally obtaining the stability coefficient of each index according to each index data and the corresponding relation table.
S5: and obtaining the stability score of the target wetland according to the multiple index weights and the multiple stability coefficients.
As shown in table 10, the final stability score was obtained by calculating the wetland ecosystem stability evaluation mathematical model. In this example, the stability score, R, was 5.82.
S6: and obtaining the stability result of the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table.
As shown in table 9, when the stability score R was 5.82, the stability results of the target wetland were slightly stable.
according to the wetland ecosystem stability evaluation method, a plurality of corresponding wetland evaluation indexes and judgment matrixes are provided according to the characteristics of the wetland, and index weights corresponding to the plurality of wetland evaluation indexes are further obtained; and correspondingly obtaining a stability coefficient according to the index data of the wetland, and further obtaining a stability score of the target wetland according to the index weight and the stability coefficient so as to obtain a stability result of the wetland. The invention can obtain stability result aiming at the characteristics of the wetland.
Fig. 2 is a structural block diagram of the wetland ecosystem stability evaluation system in the embodiment of the invention. As shown in fig. 2, the wetland ecosystem stability evaluation system according to the embodiment of the present invention includes: a module 100, an acquisition module 200 and a processing module 300 are provided.
The providing module 100 is used for providing a plurality of wetland evaluation indexes of the target wetland and a judgment matrix aiming at the wetland evaluation indexes. The obtaining module 200 is used for obtaining a plurality of index data of the target wetland. The processing module 300 is configured to obtain a plurality of index weights according to the plurality of evaluation indexes and the determination matrix, obtain a plurality of stability coefficients according to the plurality of index data and a preset index data-stability coefficient correspondence table, further obtain a stability score of the target wetland according to the plurality of index weights and the plurality of stability coefficients, and obtain a stability result of the target wetland according to the stability score and a preset stability score-stability condition correspondence table.
The wetland evaluation system comprises a plurality of wetland evaluation indexes, a plurality of data acquisition units and a plurality of data processing units, wherein the plurality of index data correspond to the plurality of wetland evaluation indexes one to one; the plurality of rating indexes and the plurality of index weights are arranged in a one-to-one correspondence manner; the index data and the stability coefficients are in one-to-one correspondence.
In an embodiment of the present invention, the processing module 300 is specifically configured to calculate a product Mi of each row of the determination matrix:
Wherein, alpha ij is the element of the ith row and the jth column of the judgment matrix, and the n-th square root of Mi is calculated
carrying out normalization processing on the vector to obtain a weight WT:
W＝(W,W,…,W)。
In one embodiment of the invention, the plurality of wetland evaluation indexes comprise a plurality of primary evaluation indexes, and each primary evaluation index comprises a plurality of secondary evaluation indexes.
In one embodiment of the invention, the plurality of primary evaluation indexes comprise wetland ecological environment indexes, wetland service function indexes and human social influence indexes.
In one embodiment of the present invention, the plurality of wetland evaluation indexes include: wetland ecological environment indexes including precipitation, evaporation, soil properties, wetland water quality, wetland area change, landscape diversity index, landscape uniformity index and landscape fragmentation index; the wetland service function indexes comprise: the wetland has the functions of water storage and flood regulation, purification, biological diversity maintenance, biological habitat providing, substance production and erosion control; the human social influence indicators include: population density, population natural growth rate, surrounding population quality, per capita pure income, pesticide and fertilizer application strength, wetland protection consciousness, policy and regulation penetration strength, wetland management level and environmental protection investment index.
It should be noted that the specific implementation of the wetland ecosystem stability evaluation system in the embodiment of the present invention is similar to the specific implementation of the wetland ecosystem stability evaluation method in the embodiment of the present invention, and specific reference is made to the description of the wetland ecosystem stability evaluation method, and details are not repeated for reducing redundancy.
in addition, other structures and functions of the wetland ecosystem stability evaluation system of the embodiment of the invention are known to those skilled in the art, and are not described in detail in order to reduce redundancy.
in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A wetland ecosystem stability assessment method is characterized by comprising the following steps:
Providing a plurality of wetland evaluation indexes of a target wetland and a judgment matrix aiming at the wetland evaluation indexes;
Obtaining the index weights according to the evaluation indexes and the judgment matrix, wherein the rating indexes are in one-to-one correspondence with the index weights;
acquiring a plurality of index data of the target wetland, wherein the index data correspond to the wetland evaluation indexes one to one;
Obtaining a plurality of stability coefficients according to the plurality of index data and a preset index data and stability coefficient corresponding relation table, wherein the plurality of index data and the plurality of stability coefficients are in one-to-one correspondence;
Obtaining the stability score of the target wetland according to the index weights and the stability coefficients;
and obtaining the stability result of the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table.
2. the wetland ecosystem stability assessment method according to claim 1, wherein the obtaining of the plurality of index weights according to the plurality of evaluation indexes and the judgment matrix specifically comprises:
calculating the product Mi of each row of the judgment matrix:
Wherein, alpha ij is the element of the ith row and the jth column of the judgment matrix, and the n-th square root of Mi is calculated
Carrying out normalization processing on the vector to obtain a weight WT:
W＝(W,W,…,W)。
3. The wetland ecosystem stability assessment method according to claim 1, wherein the plurality of wetland evaluation indexes comprise a plurality of primary evaluation indexes, and each primary evaluation index comprises a plurality of secondary evaluation indexes.
4. The wetland ecosystem stability assessment method according to claim 3, wherein the plurality of primary evaluation indexes comprise wetland ecological environment indexes, wetland service function indexes and human social influence indexes.
5. The wetland ecosystem stability assessment method according to claim 4, wherein the plurality of wetland evaluation indexes comprise: wetland ecological environment indexes including precipitation, evaporation, soil properties, wetland water quality, wetland area change, landscape diversity index, landscape uniformity index and landscape fragmentation index;
The wetland service function indexes comprise: the wetland has the functions of water storage and flood regulation, purification, biological diversity maintenance, biological habitat providing, substance production and erosion control;
The human social influence indicators include: population density, population natural growth rate, surrounding population quality, per capita pure income, pesticide and fertilizer application strength, wetland protection consciousness, policy and regulation penetration strength, wetland management level and environmental protection investment index.
6. A wetland ecosystem stability evaluation system is characterized by comprising:
The system comprises a providing module, a judging module and a judging module, wherein the providing module is used for providing a plurality of wetland evaluation indexes of a target wetland and a judging matrix aiming at the wetland evaluation indexes;
The acquisition module is used for acquiring a plurality of index data of the target wetland;
The processing module is used for obtaining the index weights according to the evaluation indexes and the judgment matrix, obtaining a plurality of stability coefficients according to the index data and a preset index data and stability coefficient corresponding relation table, further obtaining the stability score of the target wetland according to the index weights and the stability coefficients, and obtaining the stability result of the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table;
the index data correspond to the wetland evaluation indexes one by one; the plurality of rating indexes and the plurality of index weights are arranged in a one-to-one correspondence manner; the index data and the stability coefficients are in one-to-one correspondence.
7. The wetland ecosystem stability evaluation system of claim 6, wherein the processing module is specifically configured to calculate a product Mi of each row of the judgment matrix:
Wherein, alpha ij is the element of the ith row and the jth column of the judgment matrix, and the n-th square root of Mi is calculated
carrying out normalization processing on the vector to obtain a weight WT:
W＝(W,W,…,W)。
8. The wetland ecosystem stability evaluation system of claim 6, wherein the plurality of wetland evaluation indexes comprise a plurality of primary evaluation indexes, each primary evaluation index comprising a plurality of secondary evaluation indexes.
9. The wetland ecosystem stability evaluation system of claim 8, wherein the plurality of primary evaluation indexes comprise a wetland ecological environment index, a wetland service function index and a human social influence index.
10. The wetland ecosystem stability evaluation system according to claim 9, wherein the plurality of wetland evaluation indexes comprise: wetland ecological environment indexes including precipitation, evaporation, soil properties, wetland water quality, wetland area change, landscape diversity index, landscape uniformity index and landscape fragmentation index;
The wetland service function indexes comprise: the wetland has the functions of water storage and flood regulation, purification, biological diversity maintenance, biological habitat providing, substance production and erosion control;
The human social influence indicators include: population density, population natural growth rate, surrounding population quality, per capita pure income, pesticide and fertilizer application strength, wetland protection consciousness, policy and regulation penetration strength, wetland management level and environmental protection investment index.
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