基于熵权法的里下河腹部典型区综合水质评价  

Comprehensive Water Quality Evaluation in Typical Lixiahe Abdominal Area Based on Entropy-Weight Method

作　　者：傅国圣 周佳楠 李云中 蒋陈娟[2] FU Guo-sheng;ZHOU Jia-nan;LI Yun-zhong;JIANG Chen-juan(Taizhou Branch of Jiangsu Hydrological and Water Resources Survey Bureau,Taizhou 225300,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225127,China;Kunshan Water Conservancy Design Institute,Suzhou 215300,China)

机构地区：[1]江苏省水文水资源勘测局泰州分局,江苏泰州225300 [2]扬州大学水利科学与工程学院,江苏扬州225127 [3]昆山市水利设计院,江苏苏州215300

出　　处：《水电能源科学》2021年第5期79-82,共4页Water Resources and Power

基　　金：江苏省水利科技项目(2015024)。

摘　　要：水质评价对于水环境管理和水污染防治具有重要意义。根据2017年9月里下河腹部典型区泰州地区39个监测断面的水质监测数据,利用熵权法计算综合指数,识别重点污染区域和主要污染因子。结果表明,各水质指标超标比例由高到低分别为溶解氧、高锰酸盐指数、总磷、五日生化需氧量、氨氮;表征空间分布不均匀度的熵权由大到小分别为氨氮、总磷、溶解氧、五日生化需氧量、高锰酸盐指数;溶解氧和高锰酸盐指数是主要的全局型污染因子,姜堰区东部和兴化市东北部为重点污染区域,姜堰区东部区域型污染因子为总磷和氨氮,兴化市东北部区域型污染因子为总磷。因此,里下河腹部区泰州地区丰水期水环境治理应以提升溶解氧、降低高锰酸盐指数为主,同时兼顾姜堰区东部总磷和氨氮的治理以及兴化市东北部总磷的治理。Water quality evaluation is of great significance for water environment management and water pollution prevention and control.According to the measured water quality data in 39 monitoring sections of Taizhou,a typical area in Lixiahe abdominal area,in September of 2017,the comprehensive index was calculated by entropy-weight method to identify key polluted areas and main pollutants.The results show that the excessive proportion of each water quality index from high to low was DO,CODMn,TP,BOD5 and NH3-N.The descending order of entropy weights to characterize the heterogeneity of spatial variation inhomogeneity was NH3-N,TP,DO,BOD5 and CODMn.The DO and CODMn were the main global pollution factors.The key pollution areas in Taizhou were the east of Jiangyan and northeast of Xinghua.The regional pollutants in the east of Jiangyan were NH3-N and TP,while that in the northeast of Xinghua was TP.Therefore,the water environment control in Taizhou area of Lixiahe abdominal area should focus on improving DO and CODMn,taking into account the control of TP and NH3-N in the east of Jiangyan district and the control of TP in the northeast of Xinghua City.

关 键 词：熵权法 水质评价 重点污染区域 主要污染因子 里下河腹部典型区 

分 类 号：TV11[水利工程—水文学及水资源] X824[环境科学与工程—环境工程]