基于模糊综合分析法对县城水质的综合评价研究

Comprehensive Evaluation of Urban Water Body Based on Fuzzy Comprehensive Analysis

通过对某县城河流水体抽样检测,应用模糊评价法对七个抽样数据进行了综合分析。对水体水质的科学评价是水环境治理的重要前提,提出了模糊分析法这一水质分析评价方法。基于河南省某县的水体采样数据,选取了六种常见的水质参数,运用模糊分析法进行了水质评价。在评价中为确定隶属度矩阵,分别采用客观赋权法、主观赋权法确定权重向量矩阵W以及采用最大隶属度原则和级别特征值原则确定隶属度矩阵R。结果表明,客观赋权法-级别特征值原则最能体现区域内的水质情况,区域内该县水质总体水质为IV类。

Through river water sampling in a county town,the fuzzy evaluation method is applied to comprehensively analyze the seven sampling data.Based on the sampling data of a certain city in Henan Province,six commonly used water quality parameters were selected using fuzzy analysis to analyze the water quality comprehensively.In order to determine the membership degree matrix,objective weighting method and subjective weighting method are respectively used to determine the weight vector matrix W.Furthermore,the principle of maximum membership degree and level eigenvalue principle are used to determine the membership matrix R.The results show that objective weighting method-level feature value principle can best reflect the water quality in the area.The overall water quality in the area is ClassⅣ.