基于灰色聚类法的安昌江绵阳段水环境质量评价

Evaluation of Water Quality about Mianyang Sector of Anchang River Based on Grey Clustering Method

在对灰色聚类法原理与步骤论述的基础上,根据2013年安昌江绵阳段水质监测资料,通过建立水质综合评价的灰色聚类模型,对绵阳段平常期和暴雨后水质进行评价。结果表明:平常期监测的普明大桥、青年广场、洞庭大坝和南山大桥河段的最大聚类权系数分别为0.443,0.505,0.363和0.797,水环境质量分别为Ⅰ类水、Ⅱ类水、Ⅲ类水和Ⅰ类水;暴雨后洞庭大坝和青年广场河段的最大聚类权系数为0.517和0.447,水环境质量均为Ⅴ类水,不能达到Ⅲ类水标准。

Based on the principle and procedure of grey clustering method,according to the water quality monitoring data of Mianyang sector of Anchang river 2013,by establishing the grey clustering model of comprehensive evaluation of water quality,evaluating the water quality of Mianyang sector of Anchang river in usual period and after heavy rain. The results show that： the largest cluster weight coefficients of the 4 sections are0. 443,0. 505,0. 363 and 0. 797 in usual period and the level of water quality are class I,class II,class III and class I. The largest cluster weight coefficients of the 2 sections are 0. 517 and 0. 447 after heavy rain,and the level of water quality are all classⅤ,the water quality can not attains standards of class III.