A river water ecological health evaluation method based on ecosystem integrity and application thereof

Abstract

The invention discloses a river water ecological health evaluation method based on ecosystem integrity and application of the river water ecological health evaluation method. According to the method,four parts of fish biological integrity, physical integrity, chemical integrity and habitat integrity, and totally 50 index systems are determined for reflecting the water ecological health condition.An index with a high contribution rate to an evaluation result is screened out by analyzing main components of candidate indexes; The method comprises the following steps: carrying out Pearson correlation analysis; selecting indexes which are independent of one another, low in information overlapping degree and small in correlation coefficient as core indexes for constructing an ecological integrity evaluation system, standardizing the core indexes, and respectively endowing weights and averaging by using an analytic hierarchy process to obtain a final score and evaluation of water ecologicalhealth evaluation. The defect that traditional water physicochemical property indexes can only reflect the river water quality condition is overcome, the defect that the river health condition is evaluated through river biological characteristics is also overcome, and the long-term accumulation effect of artificial interference on habitat damage can be embodied.

Description

technical field [0001] The invention relates to the technical research field of river ecosystem integrity evaluation, and relates to a water ecological health evaluation method based on fish biological integrity and including water physical integrity, chemical integrity, and habitat integrity, and its application. Background technique [0002] With the development of society, the utilization rate of river water resources is getting higher and higher, and the stability of river ecosystem has been seriously damaged. Many problems, such as water pollution, habitat destruction, and loss of biological diversity, appear frequently. In response to this phenomenon, more and more domestic and foreign scholars have begun to pay attention to the health of rivers and conduct research on their health evaluation. River evaluation began in the middle of the 20th century. At present, there are many methods for evaluating the health of river ecosystems. At first, it mainly measured the biol...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a river water ecological health evaluation method based on ecosystem integrity and its application in view of the fact that the current application of biological integrity evaluation cannot accurately indicate the health status of rivers

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