上海市国控断面水质评价及时空特征分析  

Assessment and Spatiotemporal Analysis of Water Quality in National Monitoring Sections in Shanghai

作　　者：余磊 杨婷 贾文飞 刘壮 Yu Lei;Yang Ting;Jia Wenfei;Liu Zhuang(Shanghai Pervasive Navigation Technology Co.,Ltd.,Shanghai 201702,China)

机构地区：[1]上海普适导航科技股份有限公司,上海201702

出　　处：《绿色科技》2024年第22期179-184,共6页Journal of Green Science and Technology

摘　　要：研究基于上海市国控断面2020年逐月实测数据,对34个断面7项水质指标进行水质评价,基于多元统计分析方法分析了上海市的水质时空特征。结果显示:上海市国控断面综合污染指数为0.33~0.73,均达到了Ⅲ类水标准,总体水质状况良好,单因子评价分析中,仅TP和DO的达标率在85%左右,其余5项评价指标,达标率均在95%以上;空间上主要分为三大类:①上游边界断面;②黄浦江及下游断面;③水源地和崇明岛南部断面及与长江口相接的蕴川路桥断面,综合污染指数分别为:0.55~0.73、0.33~0.55和0.33~0.41;水质月变化特征结果分析呈现明显的季节性差异,其中夏季6-8月份的水质较差,受影响的因子为TP和DO,主要受面源和内源的影响较大。Based on the monthly measured data of Shanghai state-controlled section in 2020,this study evaluates the water quality of 7 water quality indicators in 34 sections,and analyzes the spatial and temporal characteristics of water quality in Shanghai based on multivariate statistical analysis.The results showed that the comprehensive pollution index of the state-controlled section in Shanghai was between 0.33 and 0.73,which reached the class Ⅲ water standard,and the overall water quality was good.All of them reached the class Ⅲ water standard.In the single factor evaluation analysis,only the compliance rates of TP and DO were about 85%,and the compliance rates of the other five evaluation indexes were above 95%.Spatially,it is mainly divided into three categories,which are located in the upstream boundary section,the Huangpu River and downstream section,the water source and the southern section of Chongming Island,and the Yunchuan Road and Bridge section connected to the Yangtze River Estuary.The comprehensive pollution index is 0.55~0.73,0.33~0.55 and 0.33~0.41 respectively.The results of monthly variation characteristics of water quality showed obvious seasonal differences,among which the water quality was poor from June to August in summer.The influencing factors were TP and DO,which were mainly affected by non-point source and endogenous source.

关 键 词：国控断面 水质评价 时空特征 上海市 

分 类 号：P333.2[天文地球—水文科学]