An automatic index screening method for ecological health diagnosis

Abstract

The invention relates to an automatic index screening method for ecological health diagnosis. A netted ecological health diagnosis index system is introduced, and a new index weight determination method is combined. an automatic index screening method is provided; Namely, a 'net'-shaped ecological health diagnosis index system is constructed to replace a traditional 'crotch'-shaped index system toreflect the real cross connection of a complex system, and the problems that abstract layer index weights cannot be objectively obtained and weight distribution is unreasonable traditionally are solved through combination of principal component analysis, an entropy weight method and a secondary weight distribution method. And the problems of random and redundant setting of traditional indexes aresolved through an automatic index screening model. According to the method, the real cross connection of the ecosystem system can be reflected, the quantification and automation of the index screening process are realized, the subjective influence of people in the index weight calculation and index screening process is avoided, and the scientificity and objectivity of the index screening processare improved.

Description

technical field [0001] The invention relates to the field of ecological systems, in particular to an automatic index screening method for ecological health diagnosis. Background technique [0002] Ecosystems are the basis for human survival and development. Carrying out ecosystem health diagnosis research is of great significance for exploring the sustainable development of regions and ecosystems. The diagnostic indicators and their weights selected in ecosystem health diagnosis are particularly important to the quality of ecological health diagnosis results. [0003] There are many applications of using the index system method for ecological health diagnosis. At present, a "tree-shaped" index evaluation system is generally constructed based on regional characteristics and experience. However, different regions are not comparable and reproducible. At the same time, the indicators are artificially ignored or simplified. The overlapping and cross-linking among them, while the...

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Problems solved by technology

[0003] There are many applications of using the index system method for ecological health diagnosis. At present, a "tree-shaped" index evaluation system is generally constructed based on regional characteristics and experience. However, different regions are not comparable and reproducible. At the same time, the indicators are artificially ignored or simplified. The overlapping and cross-linking among them, while the indicators selected by the network index system proposed by Xi Tao et al. The calculation generally adopts subjective weighting methods such as AHP. The process of determining the weight of indicators is affected by people’s subjective wishes, and the diagnosis results often deviate from the actual situation. At the same time, the selection of indicators lacks consideration of ecological integrity and complexity. The selection process is not transparent enough, mixed with a lot of subjective assumptions

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