阳澄西湖入湖污染物通量与滞留率研究  

Study on flux and retention rate of pollutants entering Yangcheng West Lake

作　　者：杨文晶[1] 吕文[1] 刘帅 杨金艳[1] 谢茂嵘 孙瑞瑞 谈剑宏 姜宇[1] 王杰 YANG Wenjing;LYU Wen;LIU Shuai;YANG Jinyan;XIE Maorong;SUN Ruirui;TAN Jianhong;JIANG Yu;WANG Jie(Suzhou Substation of Jiangsu Province Hydrology and Water Resources Investigation Bureau,Suzhou 215011,China;Yancheng Substation of Jiangsu Province Hydrology and Water Resources Investigation Bureau,Yancheng 224001,China)

机构地区：[1]江苏省水文水资源勘测局苏州分局,江苏苏州215011 [2]江苏省水文水资源勘测局盐城分局,江苏盐城224001

出　　处：《水利水电科技进展》2025年第2期63-68,共6页Advances in Science and Technology of Water Resources

基　　金：苏州市科技发展计划(社会发展科技创新)面上项目(2022SS22)。

摘　　要：基于2007—2019年阳澄西湖逐月水质水量同步监测数据,定量分析了阳澄西湖入湖污染物通量时空变化特征和污染物通量滞留率。结果表明:阳澄西湖入湖污染物通量年内分布不均,在水量差异较大时更易受水量影响;多年来各项入湖污染物通量整体呈下降趋势,降幅从大到小依次为氨氮、总磷、总氮、高锰酸盐指数;8条主要入湖河道中白荡的入湖污染物贡献率最大,其次是蠡塘河和界泾河;空间分布上阳澄西湖南部入湖污染物通量最大,其次是北部和中部;2019年阳澄西湖污染物滞留率从大到小依次为氨氮、总磷、总氮、高锰酸盐指数,一半以上的入湖污染物量继续汇入中湖。建议重点关注主要污染物汇入区白荡和蠡塘河,加强对周边污染源的控制与综合治理。Based on the monthly water quality and quantity synchronous monitoring data of Yangcheng West Lake from 2007 to 2019,the spatiotemporal variation characteristics of pollutant flux into Yangcheng West Lake and the retention rate of pollutant flux in the lake were quantitatively analyzed.The results show that the pollutant flux into Yangcheng West Lake is unevenly distributed throughout the year,and it is more easily affected by water volume when the water volume difference is large.Over the years,the pollutant fluxes into the lake showed an overall downward trend,with the largest to smallest reduction rates observed for ammonia nitrogen,total phosphorus,total nitrogen,and permanganate index.Among the eight main inflow rivers,the contribution rate of pollutants entering the lake in the Baidang River was the largest,followed by the Litang River and Jiejing River.In spatial distribution,the pollutant flux into the lake was the largest in the southern part of Yangcheng West Lake,followed by the northern and central parts.In 2019,the retention rates of pollutants in Yangcheng West Lake ranked from highest to lowest as ammonia nitrogen,total phosphorus,total nitrogen and permanganate index,and more than half of the pollutants entering the lake continued to flow into the middle lake.It is suggested to focus on the main pollutant inflow areas of the Baidang and Litang rivers,and strengthen the pollution source control and comprehensive treatment in surrounding areas.

关 键 词：污染物通量 污染物滞留率 入湖河道 水量 时空变化 阳澄西湖 

分 类 号：X524[环境科学与工程—环境工程]