水利水电科技进展2025，Vol.45Issue(2)：63-68,6.DOI:10.3880/j.issn.1006-7647.2025.02.009
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
摘要
Abstract
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Key words
pollutant flux/pollutant retention rate/inflow river to lake/water quantity/spatiotemporal change/Yangcheng West Lake分类
环境科学引用本文复制引用
杨文晶,吕文,刘帅,杨金艳,谢茂嵘,孙瑞瑞,谈剑宏,姜宇,王杰..阳澄西湖入湖污染物通量与滞留率研究[J].水利水电科技进展,2025,45(2):63-68,6.基金项目
苏州市科技发展计划(社会发展科技创新)面上项目(2022SS22) （社会发展科技创新）
