瓯江河口水质评价及主要污染物入海通量分析  

Quality Assessment of Aquatic Environment and Fluxes of Major Pollutants to the Ou River Estuary

作　　者：马志凯 刘亚林 邱进坤 MA Zhikai;LIU Yalin;QIU Jinkun(Wenzhou Marine Environmental Monitoring Center Station,SOA,Wenzhou 325000,China)

机构地区：[1]国家海洋局温州海洋环境监测中心站,温州325000

出　　处：《海洋开发与管理》2021年第5期92-96,共5页Ocean Development and Management

基　　金：国家海洋局东海分局青年科技基金项目(201805).

摘　　要：文章以瓯江入海河口水体为研究对象,结合综合指数法对2013-2018年瓯江入海水体水质变化趋势进行分析与评价,同时分析主要污染物的入海通量变化,以期为温州海域近岸环境改善提供参考。结果表明:瓯江河口水体中TP、CODCr超出《地表水环境质量标准》(GB3838-2002)Ⅲ类水质标准。瓯江河口水质综合污染指数均值为6.54,平均污染指数均值为0.60,主要污染物为TP和CODCr,研究期间瓯江河口水体环境质量呈好转趋势。瓯江年均污染物入海总量约为665 950t,污染物入海通量中CODCr占比最大,其次为TP;2014-2018年,TP入海通量呈下降趋势。The estuary water of Ou River was taken as the research object in this study.The water quality change trend of Ou River was analyzed and evaluated during 2013 to 2018 combined with the comprehensive index method,and meanwhile the fluxes change of major pollutants into the sea were analyzed,in order to provide reference for the improvement of the coastal environment of Wenzhou.The results showed that average concentrations of total phosphorus(TP)and chemical oxygen demand(CODCr) were all beyond the quality standards for Class Ⅲ water,according to Environmental Quality Standards for Surface Water(GB3838-2002).In Ou River estuary,the average comprehensive pollution index was 6.54 and the average pollution index was 0.60.The major two pollutants of Ou River estuary were total phosphorus(TP)and chemical oxygen demand(CODCr) and the water environment quality of the Ou River estuary been improved during the study period.The average total fluxes of major pollutants into the sea form the Ou River was 665 950 t,in which CODCr accounted for the largest proportion of pollutant fluxes,followed by the total phosphorus(TP).The flux of total phosphorus(TP)showed a downward trend during 2014~2018.

关 键 词：瓯江 综合污染指数 主要污染物 水质环境质量 入海通量 

分 类 号：P76[天文地球—海洋科学]