A synchronous water environment bearing capacity evaluation and type identification method

Abstract

A synchronous water environment bearing capacity evaluation and type identification method belongs to that field of water environment management. The method comprises the following step of: utilizinga PSR model to analyze the change process of the water environment bearing capacity, and constructing an index system of three subsystems of the water environment pressure bearing capacity, the waterenvironment state bearing capacity and the water environment response bearing capacity; normalizing the sample data and determining the index weight, substitutin the data into the variable fuzzy recognition model for evaluation, and acquiring the evaluation level of the subsystem. Then the water environmental carrying capacity is divided into 27 types according to the evaluation results of the subsystem. According to the evaluation results of the subsystem, the water environment bearing capacity is calculated by using the weighted average method, and the type of bearing capacity is determined.Finally, the subsystem evaluation results, water environment carrying capacity evaluation results, water environment carrying capacity types and other factors are substituted into GIS to draw the distribution map of water environment carrying capacity. As that water environment bearing capacity level and type are determined synchronously, the defect that the type difference exists when the same water environment bear capacity level cannot be reflected in the current water environment bearing capacity evaluation is overcome.

Description

technical field [0001] The invention belongs to the field of water environment management and relates to a method for simultaneously evaluating and identifying types of water environment carrying capacity. Background technique [0002] As an important method to study the sustainable development of social economy and environment, carrying capacity originated from ecology, and has developed a series of water environment (resource) carrying capacity, soil carrying capacity, ecological environment carrying capacity, and population carrying capacity in practical applications. Concept and Evaluation Methods. With the development of society, the demand for water resources is getting higher and higher, not only reflected in the demand for water quantity, but also the demand for water quality has reached a new height. Facing the severe water environment situation, since the 1990s, some studies on the coordinated development of social economy and water environment have been carried o...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects that the existing water environment carrying capacity evaluation method can only carry out comprehensive evaluation and cannot distinguish the type of carrying capacity, and provide a method for synchronous water environment carrying capacity evaluation and type identification, which can simultaneously evaluate the water environment carrying capacity Level and identification of water environmental carrying capacity types, thereby improving management efficiency

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