模糊综合评判法在水质评价中的应用——以松花江流域为例

社会的快速发展在给人类带来经济效益的同时,也给环境尤其是水环境造成极大的压力,水质问题是当今社会亟待解决的重大难题之一。水质是诸多因素影响的结果,具有一定程度的不确定性,所以在水质评价中需要综合考虑模糊因素。本文采用模糊综合评判法对松花江流域八个断面水质进行评价,引入数学隶属度的概念,针对多种评价因子指标值大小表示的污染程度不同,采用两种隶属度计算公式,且客观定量地确定各污染因子的权重,从而确定水质类别。

Fuzzy Comprehensive Evaluation for Songhua River Basin Appraisal of the Quality

The rapid development of our society benefits to mankind with economic while bring the enormous pressure to the environment, especially to water environment. Water quality problems become one of the-major problems urgently solved in today＇s society. Water quality is the result of many factors, with a cert.ain degree of uncertainty. So it is needed to consider the compre- hensive and fuzzy factors in water quality assessment. In this paper, fuzzy comprehensive evaluation method is used to evaluate the eight sections water quality in the Songhua River, Which introduce the concept of membership degree of Mathematics and uses two differents formulas because many evaluation factors index value represents the degree of pollution of different size to determine the weight of the pollution with objectively and quantitatively factors and determine the water quality categories.