常州市河流水质评价及污染特征分析  

Assessment of river water quality and analysis of pollution characteristics in Changzhou City

作　　者：熊勇峰 周刚[2] 徐宪根 白静 陈振宇 呼婷婷 XIONG Yongfeng;ZHOU Gang;XU Xiangen;BAI Jing;CHEN Zhenyu;HU Tingting(School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Changzhou Research Academy of Environmental Sciences,Changzhou 213022,China)

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]中国环境科学研究院,北京100012 [3]常州市环境科学研究院,江苏常州213022

出　　处：《环境保护科学》2021年第3期123-128,共6页Environmental Protection Science

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07301003;2018ZX07701001)

摘　　要：结合单因子评价与多元统计分析方法,对常州市河流在丰水月和枯水月分别进行水质评价与污染特征分析。采用单因子评价法对监测断面进行水质类别划分,对整体河流水质进行定性分级;采用主成分分析与聚类分析结合的综合分析法,分析河流断面污染特征并进行断面聚类。分析结果表明,常州市河流整体水质状况为轻度污染,但枯水月水质相对较差;有机污染和富营养化程度在丰水月与枯水月有所不同,但都是最主要的水质影响因子;聚类分析的结果表明丰水月河流断面可以划分为6个水质集群,枯水月河流断面可分为5个水质集群。Combining the single-factor evaluation with the multivariate statistical analysis method,the water quality assessment and pollution characteristics analysis for rivers in Changzhou in the wet and dry months were performed respectively.The single-factor evaluation method was used to classify the water quality of monitored cross-sections and qualitatively grade the water quality of the whole rivers.The comprehensive analysis method combining the principal component analysis with the cluster analysis was used to analyze the pollution characteristics of river cross-sections and cluster the sections.The results showed that the overall water quality of rivers in Changzhou was slightly polluted,and the water quality in the dry month was relatively poor.Although the degree of the organic pollution and the eutrophication was different between the wet and the dry seasons.They were the most important water quality factors.The result of cluster analysis showed that the cross-sections could be classified into 6 clusters in the wet season and 5 clusters in the dry season.

关 键 词：水质评价 主成分分析 聚类分析 常州河流水质 

分 类 号：X824[环境科学与工程—环境工程]