基于减法集对势对凉水河城区段污染因子的识别研究  

Identification of Pollution Factors in the Urban Section of Liangshui River Based on the Subtractive Set Pair Potential Method

作　　者：李晨 戴子龙 赵晓维 LI Chen;DAI Zilong;ZHAO Xiaowei(Beijing Liangshui River Management Office,Beijing 100069,China;Yongding River Investment Co.,Ltd.,Beijing 100019,China)

机构地区：[1]北京市凉水河管理处,北京100069 [2]永定河流域投资有限公司,北京100019

出　　处：《水资源开发与管理》2025年第4期39-43,共5页Water Resources Development and Management

摘　　要：为识别引起河流污染的主要因子,本文以北京市凉水河城区段为研究对象,通过收集分析2019—2023年总磷、总氮、氨氮、溶解氧、化学需氧量、五日生化需氧量、浊度、类大肠杆菌8个水质指标的监测数据,利用减法集对势对凉水河污染因子进行了识别。结果表明,研究区2019—2023年综合水质呈现好转的趋势,说明近年来北京市水环境治理成效显著;2019年第三季度的综合水质处于偏反势,是需重点调控的时段,其中引起2019年第三季度水质不良态势的水质指标主要有4个,分别为总磷、溶解氧、化学需氧量、五日生化需氧量。研究结果可为凉水河城区段水污染治理提供参考。In order to identify the key factors contributing to river pollution,this paper focused on the urban section of Liangshui River in Beijing.By collecting and analyzing quarterly monitoring data from 2019 to 2023 on eight water quality indicators—total phosphorus,total nitrogen,ammonia nitrogen,dissolved oxygen,chemical oxygen demand,five-day biochemical oxygen demand,turbidity,and coliforms—the subtractive set pair potential method was applied to identify pollution factors.The results indicated an overall improvement in water quality from 2019 to 2023,demonstrating the effectiveness of Beijing’s recent water environment management efforts.However,in the third quarter of 2019,the comprehensive water quality exhibited a negative potential state,marking a critical period for regulation.The four primary indicators responsible for the poor water quality during this period were total phosphorus,dissolved oxygen,chemical oxygen demand,and five-day biochemical oxygen demand.These findings provide valuable insights for water pollution control in the urban section of Liangshui River.

关 键 词：凉水河 水质污染 减法集对势 

分 类 号：TV213.4[水利工程—水文学及水资源]