基于熵权的改进密切值法在水质综合评价的应用

将2003至2008年宁德市金涵水库水质监测值与地表水环境质量标准相结合,建立了环境样本矩阵,运用信息熵原理确定各指标的权重,并应用改进密切值法进行水质综合评价。结果表明:金涵水库从2003至2008年水质都是Ⅱ类以上,水质总体良好。该评价方法操作简便易行,结论切实可行,并可反映出各评价单元的优劣变化。

By means of combined monitoring data from 2003-2008 of Jinhan Reservoir in Ningde city with standard values,this paper sets up the water quality assessment matrix,uses the principle of information entropy to define the scale of each index,and applies improved osculating value methods to evaluating the water quality.The results show：from 2003 to 2008,the quality of Jinhan reservoir arrive the Ⅱ standard,in general,the quality of water is good.It also could reflect the variety of good and bad quality of all kinds of evaluation samples.