基于熵权的模糊物元模型在水环境质量评价中的应用研究

Application of Fuzzy Matter-element Model based on Entropy Weight for Water Environment Quality Assessment

水环境质量评价是水资源规划与管理及水质水量统一量化研究的重要部分。引入模糊物元方法,结合熵权和欧氏贴近度理论,建立基于熵权的水环境质量模糊物元评价模型。利用伊通河3个监测断面的水质分析资料,选取反映地表水环境质量状况的部分评价指标,应用模糊物元模型对伊通河水环境质量进行了综合评价。研究结果显示伊通河水环境质量年均值多为Ⅴ类和劣Ⅴ类,水质污染较重且有加重趋势。实例分析表明基于熵权的模糊物元模型应用于水环境质量评价是切实可行的,具有一定的应用价值。

Water environment quality assessment is an important part of water resources planning and management and the unified quantitative research of water quality and quantity. By introducing fuzzy matter- element theory,combining entropy weight and the theory of Euclid approach degree,the fuzzy matter- element model of water environment quality assessment based on entropy weight was established. According to the data of water quality analysis in 3 monitoring sections,some assessment indicators of water environment quality was selected to complete a comprehensive assessment of water environment quality for Yitong River.The results showed that annual average of water environment quality in Yitong River almost belonged to Grade Ⅴ and below GradeⅤ,and showed an aggravation trend of water pollution. The empirical analysis denoted that fuzzy matter- element model based on entropy weight was feasible to assess water environmental quality and showed the application value.