淀山湖底泥污染物特性及分布研究  

Characteristics and Distribution of Pollutants in Sediment of Dianshan Lake

作　　者：石磊 SHI Lei(Qingpu sub center of Shanghai water environment monitoring center,Shanghai 201700)

机构地区：[1]上海市水环境监测中心青浦分中心,上海201700

出　　处：《农业灾害研究》2020年第7期151-152,155,共3页Journal of Agricultural Catastrophology

摘　　要：为全面了解淀山湖底泥中污染物特性,采集了淀山湖12个点位底泥,分析研究淀山湖底泥中有机质、总磷、总氮的空间分布特征。结果表明:底泥中有机质含量多12.0~27.6 g/kg,总氮含量为678~2376 mg/kg;总磷含量为481~1072 mg/kg,其空间分布均为湖区北部、西南部,入湖河口区域较高,湖区南部、出湖河口区域较低。综合污染指数与有机质污染指数表明,淀山湖底泥环境质量整体较好,污染指数随深度增加呈降低趋势,湖区北部及西南部氮磷污染较严重,主要受入湖河道外源污染影响。In order to fully understand the characteristics of pollutants in the sediments of Dianshan Lake,the sediments at 12 locations of Dianshan Lake were collected,and the spatial distribution characteristics of organic matter,total phosphorus and total nitrogen in the sediments of Dianshan Lake were analyzed and studied.The results show that the organic matter content in the bottom mud is 12.0-27.6 g/kg more,the total nitrogen content is 678-2376 mg/kg;the total phosphorus content is 481-1072 mg/kg,and its spatial distribution is in the north and southwest of the lake area.The estuary area of the lake is higher,and the southern part of the lake area and the estuary area of the lake are lower.The comprehensive pollution index and organic pollution index show that the overall environmental quality of the sediments of Dianshan Lake is good,and the pollution index shows a decreasing trend with increasing depth.The northern and southwestern parts of the lake area have serious nitrogen and phosphorus pollution,which is mainly affected by external pollution from the river into the lake.

关 键 词：淀山湖 底泥 总磷 总氮 有机质 

分 类 号：X524[环境科学与工程—环境工程]