摘要
构建基于传统方法、层次分析法、变异系数法、熵值法4种权重赋值方法的模糊综合水质评价模型,对比分析4种方法的基本原理以及优缺点,以沁河和白洋淀监测断面为例,分析4种方法在不同水体中求得的权重值及应用到模糊综合评价中得到的水质评价结果的差异。研究结果表明:层次分析法既考虑了最大污染因子的影响,又考虑了指标之间的相互作用,相对而言更适合于只有1个或者2个主要污染物的水体;变异系数法与熵值法考虑了多个样本数据之间的联系,使得评价结果能更合理反映水体的综合特性,更加适合于有多个主要污染物的水体。
Four weight assignment methods, including the traditional method, the analytic hierarchy process, the variation coefficient method and the entropy weight method, were used in the fuzzy comprehensive water quality assessment model.The basic principles were compared, and the advantages and disadvantages were pointed out among the four methods.In this paper, taking the monitoring cross sections of Qinhe main stream and Baiyangdian Lake as an example, the differences of the weight values and evaluation results of four methods in different water bodies were also compared.The results show that the analytic hierarchy process is relatively more suitable for the water body which has only one or two main pollutants, because it takes the influence of the maximum pollution factor into account, and also considers the interaction among the indicators.However, the variation coefficient method and the entropy value method are more suitable for the water body with multiple main pollutants.As the interaction among the multiple sample data is considered, the evaluation results can reflect the comprehensive properties of the water body much more reasonable.
出处
《人民黄河》
CAS
北大核心
2015年第12期69-73,共5页
Yellow River
基金
水利部公益性行业科研专项(201301092)
关键词
模糊综合水质评价
层次分析法
变异系数法
熵值法
fuzzy comprehensive water quality assessment
analytic hierarchy process
variation coefficient method
entropy weight method
