Multi-scale river health characterization and evaluation method

Abstract

The invention provides a river health comprehensive characterization and evaluation system covering three scales of river basin, river corridor and habitat and combining points, lines and surfaces against the problem that the existing river health characterization and evaluation are largely focused on the single river corridor scale with the ignorance of the internal relations between a river and the river basin and the habitat, and the river health comprehensive characterization and evaluation system applies the multi-index integrated method, respectively determines the river comprehensive health and the health level in each scale and identifies main factors limiting the river health state. The method fully considers the multi-scale integration of the river and the characteristics of close links among the scales and fully considers an interference source of the river and the river, thereby being capable of rapidly and accurately identifying the main limiting factors of the river health while determining the health scales of different river sections of the same river or the health scales of different rivers in the same ecological region, having the advantages of intuitive result expression, convenient application and the like and providing a definite method basis for the river comprehensive management.

Description

technical field [0001] The invention belongs to the field of water ecological evaluation and management, and in particular relates to a multi-scale river health comprehensive characterization and evaluation method. This method is suitable for health assessment of damaged rivers and identification of health constraints. Background technique [0002] Rivers have various social and economic functions such as water supply and power generation, as well as ecological functions such as maintaining the global material and water cycle and regulating climate. Healthy rivers are an important guarantee for the sustainable development of human society and the normal functioning of ecological services. With the increase of the intensity of human irrational activities, industrial and domestic pollution discharge, excessive exploitation of water resources, flood control, dams and other water conservancy projects destroy the integrity of the water ecosystem, change the structure of the rive...

AI Technical Summary

Problems solved by technology

[0005] In view of the current river health characterization and evaluation, most of them focus on a single river corridor scale, ignoring the multi-scale problem of rivers, and on the basis of fully considering the internal relationship between rivers, river basins and habitats, the present invention provides comprehensive solutions covering river basins and river corridors. Comprehensive characterization and evaluation method for river health at three scales of river and habitat

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