模糊数学法在抚河流域环境质量评价中的运用

以“十五”期间抚河流域地表水环境质量为研究对象,运用模糊数学评价法对9个监测断面和9个污染因子进行了综合评价。评价结果显示,抚河流域地表水环境质量总体状况良好,除2002年度西津渡断面、2004年度南城断面和2005年度南丰断面为Ⅲ级水质外,其它各年度和各断面的水质等级都处于Ⅰ级和Ⅱ级,符合功能区水环境质量标准;在各污染因子中COD、BOD5、挥发酚类对河流水质的贡献率较大。由此分析了相应的原因。

Utilization of Fuzzy Mathematical Method in Fu River Basin Environmental Quality Evaluation

The surface water environmental quality of Fu river basin during the State's Tenth Five-Year Plan period(2001-2005) was studied in this article.Comprehensive evaluation of nine monitoring cross sections and nine pollution factors were conducted by fuzzy mathematical method.The evaluation result showed that the overall surface water environmental quality condition of Fu river basin was good that it conformed to the water environmental quality standard in the function area.The water quality rank in level I and II of all cross sections during the period except that of Xijindu cross section in 2002,Nancheng cross section in 2004 and Nanfeng cross section in 2005 rank in level III.It also showed that in each pollution factor,COD,BOD5 and the votile phenol contributed much more to the water quality of this river.Thus corresponding reason was analyzed.