CN101847248A - Method for evaluating service function of wetland ecosystem - Google Patents
Method for evaluating service function of wetland ecosystem Download PDFInfo
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- CN101847248A CN101847248A CN201010156728A CN201010156728A CN101847248A CN 101847248 A CN101847248 A CN 101847248A CN 201010156728 A CN201010156728 A CN 201010156728A CN 201010156728 A CN201010156728 A CN 201010156728A CN 101847248 A CN101847248 A CN 101847248A
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Abstract
The invention discloses a method for evaluating the service function of a wetland ecosystem, which relates to a method for evaluating the service function. The invention solves the problems of the existing method for evaluating a wetland that as obtained function indexes cannot be combined into an overall wetland function score, the overall wetland function cannot be determined. The method comprises the following steps of: establishing a hierarchical structure model by using a hierarchical analysis method, constructing a judgment matrix, performing a single hierarchical sequencing and an overall hierarchical sequencing by combining an expert evaluating method, and performing a consistency check to realize the evaluation of the wetland ecosystem service function. Aiming at the overall wetland evaluation, the method screens indexes for evaluating the wetland function and constructing an index system for comprehensively evaluating the wetland and evaluates the service function of the wetland ecosystem, thereby determining the overall wetland function. The method has a certain instructive significance for the wetland monitoring and current wetland investigation of China.
Description
Technical field
The present invention relates to the method that a kind of service function is estimated.
Background technology
Wetland is as the kidney of the earth, have nourishment source, homogenizing flood, regulate the climate, degradation of contaminant, the animals and plants habitat be provided, ecologic environment and social service functions such as resource and leisure sightseeing spot are provided, be human common wealth, with forest, ocean and be called the three big ecosystems on the earth.
China's wetland total area is 3848.55 ten thousand hm
2, occupy first in Asia, the 4th in the world.But because people are to the limitation of Wetland ecological function understanding level with to the simple pursuit of economic benefit; for a long time enclose and cultivate, under all multifactor actings in conjunction such as capital construction takies, environmental pollution, overhunting, silt alluvial, unreasonable hydraulic engineering construction; wetland resource has suffered serious destruction; make wetland disappear, destroy and degenerate just at a terrific speed, the task that the wetland resource protection is faced is very arduous.Therefore carry out evaluating service function of wetland ecosystem research, make people fully realize the importance of wetland,, keep region ecology safety and have great importance the protection wetland resource.
In the wetlands ecosystems functional evaluation, Kent equals nineteen ninety and has developed wetlands ecosystems function Fast Evaluation (WRAP) on a kind of macro-level, its objective is those wetland functions that are widely known by the people of assessment, and it can use in the open air fast.Hydrology geomorphology (HGM) method that the people established such as Brinson has certain application value, and it is based on ecological principle and use with reference to wet land system, and wet land system is given to estimate.China had also carried out the wetlands ecosystems functional evaluation in recent years, comprise wetland bio-diversity evaluation (Yan Chenggao, 2000), Wetland ecological quality assessment (Xu Jianmin, 2001), (Shao becomes, 2001) and local area ecological risk assessment several aspects such as (Xu Xuegong, 2001) are estimated in the influence of wetlands ecosystems accumulative total.They utilize the index such as bio-diversity, scarcity, representativeness, rare property, naturality, fragility of wetlands ecosystems.The index of wetland functional evaluation is generally all selected ecological index, and ecological index often is based on Biological indicators, and wetland plant and animal index mostly are along with season of wetland hydrologic(al) regime and year border change and change.
The research of wetlands ecosystems comprehensive service function is an important prediction field and a pioneer field of wetland research always, but the resulting function index of existing these evaluation methods can not be merged into a wetland general function mark, and can't determine the wetland allomeric function, but also do not find the gratifying method of estimating the wetland allomeric function now.
Summary of the invention
The objective of the invention is to be merged into a wetland general function mark in order to solve the resulting function index of existing wetland evaluation method, and can't determine the problem of wetland allomeric function, and provide a kind of method of evaluating service function of wetland ecosystem.
The method of a kind of evaluating service function of wetland ecosystem of the present invention is carried out in accordance with the following methods: the method that adopts step analysis, set up hierarchy Model, construct judgment matrix, again in conjunction with expert's scoring, carry out the single preface of level and total ordering, at last by promptly having realized evaluating service function of wetland ecosystem after the consistency check.
The hierarchical structure of setting up among the present invention is made up of general objective layer (A layer), comprehensive evaluation layer (B layer) and project evaluation layer (C layer).
General objective layer (A layer) is that the wetlands ecosystems function is estimated; Comprehensive evaluation layer (B layer) is that the ecosystem service function of wetland is divided into several big aspects; with the function size of the non-linear phase Calais of these a few broad aspect functions reflection general objective, comprise that mainly wetland environmental benefit, Wetland ecological protection benefit, wetland resource benefit, science and culture benefit and legacy, existence are worth.
The project evaluation layer is that many projects that comprehensive evaluation layer inferior division comes out are estimated, and mainly comprises: 1, wetland environmental benefit: homogenizing flood, moisturizing, regulate the climate, anti-saline and alkaline, anti-natural force corrodes (desertifying and the soil erosion), pollutant, nutraceutical fixing with shift out; 2, Wetland ecological protection benefit: the integrality of diversity of organism, representativeness, stability of ecosystem, the ecosystem; 3, wetland resource benefit: living resources, water resource, mineral resources, potential land resource; 4, science and culture benefit: scientific research and education land used, amusement and travel, cultureal value; 5, legacy, existence are worth: legacy is worth, exists value.
Method of the present invention is being target to the wetland overall evaluation, the index of screening wetland functional evaluation, make up the index system of wetland comprehensive evaluation, service function of wetland ecosystem is estimated, thereby determined the wetland allomeric function, method of the present invention has certain directive significance to China's wetland monitoring and the investigation of ongoing wetland.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the combination in any between each embodiment.
Embodiment one: the method for a kind of evaluating service function of wetland ecosystem of present embodiment is carried out in accordance with the following methods: the method that adopts step analysis, set up hierarchy Model, construct judgment matrix, again in conjunction with expert's scoring, carry out the single preface of level and total ordering, at last by promptly having realized evaluating service function of wetland ecosystem after the consistency check.
Present embodiment determines that the index screening principle of wetland functional evaluation is scientific, comprehensive, typicalness, operability and independence.
Present embodiment is set up hierarchical structure and is made up of general objective layer (A layer), comprehensive evaluation layer (B layer) and project evaluation layer (C layer).
General objective layer (A layer) is that the wetlands ecosystems function is estimated; Comprehensive evaluation layer (B layer) is that the ecosystem service function of wetland is divided into several big aspects; with the function size of the non-linear phase Calais of these a few broad aspect functions reflection general objective, comprise that mainly wetland environmental benefit, Wetland ecological protection benefit, wetland resource benefit, science and culture benefit and legacy, existence are worth.
The project evaluation layer is that many projects that comprehensive evaluation layer inferior division comes out are estimated, and mainly comprises: 1, wetland environmental benefit: homogenizing flood, moisturizing, regulate the climate, anti-saline and alkaline, anti-natural force corrodes (desertifying and the soil erosion), pollutant, nutraceutical fixing with shift out; 2, Wetland ecological protection benefit: the integrality of diversity of organism, representativeness, stability of ecosystem, the ecosystem; 3, wetland resource benefit: living resources, water resource, mineral resources, potential land resource; 4, science and culture benefit: scientific research and education land used, amusement and travel, cultureal value; 5, legacy, existence are worth: legacy is worth, exists value.
Judgment matrix is the starting point of step analysis, and the structure judgment matrix is a key step of step analysis.
According to expert's evaluation method of judging, through adjusting repeatedly at matlab6.1 software, the structure judgment matrix is as shown in table 1.
Table 1 Wetland ecological value assessment judgment matrix
B in the matrix of table 1
12=1/2, expression Wetland ecological protection benefit other benefit relatively is most important, b
13=3, the expression wetland resource in each benefit, be considered as important and inessential between, and b
15=7, it is least important that expression exists legacy to be worth relative other benefit.By check, therefore the CR of above several matrixes has satisfied consistance all less than 0.10.
Before the weight of determining total ordering index, to carry out the index consistency check too.Its method of inspection is: according to formula
Calculate, if result of calculation CR=0.0078＜0.10 both can be defined as having consistance; Wherein Bk is the weights of B layer K criterion, Cik be level C index to hierarchical B, the single preface coincident indicator of K criterion, RIk be level C index to hierarchical B, the average homogeneity index of K criterion.
Table 2 is that comprehensive evaluation layer (B layer) ecosystem service function is estimated the layer factor and ordering, and table 3 is project evaluation layer (C layer) project evaluation layer factor weight and ordering.
Table 2
Table 3
By table 2 and table 3 as can be seen, in the wetland benefit evaluation, Wetland ecological protection benefit＞wetland environmental benefit＞wetland resource benefit＞science and culture benefit＞existences, heredity value.As can be seen, important species habitat, ecosystem integrality, moisturizing, homogenizing flood, living resources etc. are playing an important role aspect the decision wetland benefit from the project evaluation layer; Bio-diversity, representativeness, scientific research and education land used, wetland hydrology resource, to regulate the climate, exist value, potential land values and amusement and travel etc. to play a part important a little; Be anti-natural force erosion, mineral resources, heredity value at last, resist saline and alkaline and cultureal value etc.
Method according to present embodiment is estimated Jilin Province's Mo Moge service function of wetland ecosystem.At first give whole evaluating service function of wetland ecosystem index system 100 minutes by weight, re-construct the wetland assessment indicator system.Every function degree of judging wetland then and being had.According to the significance level difference, coefficient desirable 0.1,0.3,0.5,0.7,0.9, also desirable in case of necessity 0.2,0.4,0.6,0.8,1.0.Each score value addition of score value of multiply by the factor of evaluation of coefficient correspondence with coefficient when calculating the wetland comprehensive benefit is the comprehensive assessment value of this wetland, wherein about the project evaluation layer factor weight of C layer and sort as shown in table 4.
Table 4
With reference to wilderness area comprehensive evaluation index grade scale, the aggregative index of wetland can be divided into 3 grades: comprehensive evaluation index total points＞70 are the important wetland of one-level, and 50-70 is the important wetland of secondary, is divided into three grades of important wetlands less than 50.Mo Moge wetland benefit comprehensive evaluation must be divided into 69.18 as can be seen from Table 4, is the important wetland of secondary therefore.
Claims (2)
1. the method for an evaluating service function of wetland ecosystem, the method that it is characterized in that evaluating service function of wetland ecosystem is carried out in accordance with the following methods: the method that adopts step analysis, set up hierarchy Model, construct judgment matrix, again in conjunction with expert's scoring, carry out the single preface of level and total ordering, at last by promptly having realized evaluating service function of wetland ecosystem after the consistency check.
2. the method for a kind of evaluating service function of wetland ecosystem according to claim 1 is characterized in that setting up hierarchical structure and is made up of general objective layer, comprehensive evaluation layer and project evaluation layer.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305204A (en) * | 2018-02-12 | 2018-07-20 | 中国科学院东北地理与农业生态研究所 | Wetland Biodiversity effectiveness regional correlation appraisal procedure based on basis of reference |
| CN108335053A (en) * | 2018-03-08 | 2018-07-27 | 中国人民解放军61489部队 | A kind of application study type military research Task application evaluation method |
| CN110414825A (en) * | 2019-07-23 | 2019-11-05 | 华北水利水电大学 | A kind of aqueous culture legacy evaluation method |
| CN112508415A (en) * | 2020-12-10 | 2021-03-16 | 中国科学院东北地理与农业生态研究所 | Construction method of wetland hydrological communication degree comprehensive evaluation index system |
-
2010
- 2010-04-27 CN CN201010156728A patent/CN101847248A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305204A (en) * | 2018-02-12 | 2018-07-20 | 中国科学院东北地理与农业生态研究所 | Wetland Biodiversity effectiveness regional correlation appraisal procedure based on basis of reference |
| CN108305204B (en) * | 2018-02-12 | 2021-06-18 | 中国科学院东北地理与农业生态研究所 | Reference-based wetland biodiversity protection effect area comparison evaluation method |
| CN108335053A (en) * | 2018-03-08 | 2018-07-27 | 中国人民解放军61489部队 | A kind of application study type military research Task application evaluation method |
| CN110414825A (en) * | 2019-07-23 | 2019-11-05 | 华北水利水电大学 | A kind of aqueous culture legacy evaluation method |
| CN112508415A (en) * | 2020-12-10 | 2021-03-16 | 中国科学院东北地理与农业生态研究所 | Construction method of wetland hydrological communication degree comprehensive evaluation index system |
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Application publication date: 20100929 |