Reference lake quantitative determination method based on human disturbance intensity

Abstract

The invention provides a reference lake quantitative determination method based on human disturbance intensity. The reference lake quantitative determination method based on the human disturbance intensity mainly includes: 1) in a target area, determining candidate reference lakes in the area, applying a principal component analysis method to determine human disturbance intensity indexes of lake basins, and establishing an evaluation index system and grade standards of the candidate reference lakes; 2) determining evaluation index weight, comparing importance of evaluation indexes of the candidate reference lake in pairwise mode, establishing a fuzzy complementary judgment matrix A based on a hierarchical structure, and performing consistent judgment on the matrix A, wherein the matrix A=(aij) 6*6, and 0<=aij<=1, aij+aji=1; 3) calculating single index connection degree between the candidate reference lakes and evaluation grades and comprehensive connection degree between the candidate reference lakes and the evaluation grades by using a set pair analysis method under the evaluation indexes of the candidate reference lakes; and 4) evaluating grades of the candidate reference lakes, and determining the reference lakes. The reference lake quantitative determination method based on the human disturbance intensity has important and real meaning for quantitative selection of the reference lakes and protection, evaluation and management of lakes.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for quantitatively determining reference lakes based on human disturbance intensity. Background technique [0002] A reference lake is a lake that has not been affected by humans or has been minimally affected by humans and is maintained for optimal use, representing the natural biological, physical, and chemical integrity of the area. The reference lakes are representative of an area and their state should represent the best range of predictable least affected states of similar lakes in the area. Typically, lakes do not exist without human disturbance. The European Water Framework Directive recommends that the reference state of lakes can have a small fluctuation range, which means that human influence is allowed, as long as there is no or only a small ecological impact. Therefore, the lakes least affected by human beings are generally sel...

AI Technical Summary

Problems solved by technology

The results of the study are greatly influenced by the human subjectivity of the researcher

Images