Evaluation method and an evaluation system for wetland ecological degradation

Abstract

The embodiment of the invention discloses an evaluation method and an evaluation system for wetland ecological degradation, relates to the technical field of wetland ecological protection, and aims tocomprehensively reflect the problem of a wetland ecological degradation process and improve the comprehensiveness and the accuracy of evaluation. According to the main technical scheme of the embodiment of the invention, multi-stage wetland information of the same object is extracted from multi-stage remote sensing image data; According to the multi-stage wetland information, determining a plurality of evaluation indexes for evaluating the ecological degradation of the target wetland from a plurality of aspects which reflect the ecological degradation of the wetland, the plurality of aspectsat least comprising a wetland area, a structure and a function; Constructing a wetland ecological degradation comprehensive index corresponding to the object by using the plurality of evaluation indexes; And evaluating wetland information of the object in different years by using the comprehensive index. The method is mainly used for evaluating the wetland ecological degradation process.

Description

technical field [0001] The invention relates to the technical field of wetland ecological protection, in particular to an evaluation method and evaluation system for wetland ecological degradation. Background technique [0002] Wetlands are not only one of the important components of the global ecosystem, but also one of the most important living environments for human beings. They have a variety of unique ecological functions such as water storage, sewage purification, and climate regulation. They are known as the "kidney of the earth." However, under the long-term comprehensive influence of natural factors and human activities, the structure and function of wetland ecosystems are destroyed, resulting in the decline of its anti-interference ability, poor stability, increased vulnerability, and reduced productivity and biodiversity. The ecosystem has gradually evolved into another low-level ecological system adapted to it. The above-mentioned wetland ecological degradation h...

AI Technical Summary

Problems solved by technology

However, the symptoms of wetland ecological degradation are diverse and not single. For example, in addition to the sharp decrease in wetland area and high level of landscape fragmentation, there are also soil degradation and low health of wetland ecosystems. In short, wetland ecological Degradation is a comprehensive and complex process that reflects the reduction of wetland area, the destruction of landscape structure, the decline or even loss of functions, so only using the existing single index to evaluate the process of wetland ecological degradation is not enough to objectively evaluate the degree of wetland ecological degradation, and it will also lead to The results of the evaluation are also one-sided and not accurate enough

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