摘要
水质评价需综合考虑各指标的属性,利用单指标评价常常具有独立性和不相容性。在将其视为灰色的基础上,由计算各样本的灰色关联度来确定其所属级别。同时,引入信息熵理论,运用熵值法来确实评价指标的权重,从而解决了权重计算困难的问题。运用本文建立的基于熵权和灰色关联度的水质综合评价模型,通过在北京市5大河流水质综合评价中的应用,表明其结果合理,计算简单。该模型也适合于流域水质评价。
According to non-compatibility of indexes in the evaluation of water quality, a new model is built based on coefficients of entropy to evaluate water quality, which combines entropy value theory with grey relating degree. The entropy value method is used to calculate the coefficient of weight and this avoids problems of distribution by using experts experiences. A new method is used to evaluate water quality in this paper, the result of application adapts to the evaluation of water quality.
出处
《中国农村水利水电》
北大核心
2008年第4期1-3,7,共4页
China Rural Water and Hydropower
基金
国家973资助项目(2003CB415202)
关键词
灰色关联度
熵权
河流
水质评价
grey relating degree
water quality
entropy
evaluation of water environmental quality
