应用GIS技术对太湖底泥重金属的研究  

Research on Heavy Metals in Sediment of Taihu Lake Based on GIS Technology

作　　者：庄严 顾蓓瑜 张虎军 刘林瑶 纪侃 叶凉 ZHUANG Yan;GU Bei-yu;ZHANG Hu-jun;LIU Lin-yao;JI Kan;YE Liang(Jiangsu-Wuxi Environmental Monitoring Center,Wuxi Jiangsu 214121,China;Wuxi Vocational and Technical Hight School of Automobile and Engineering,Wuxi Jiangsu 214000,China)

机构地区：[1]江苏省无锡环境监测中心,江苏无锡214121 [2]无锡市汽车工程学校,江苏无锡214000

出　　处：《干旱环境监测》2021年第4期151-154,166,共5页Arid Environmental Monitoring

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07101-013)。

摘　　要：应用GIS技术研究太湖底泥重金属含量分布情况。研究表明,2019年太湖底泥重金属砷、汞、铅、铬、镉、铜、锌的含量分别为10.2、0.079、46.2、79.5、0.37、32.1 mg/kg和103.6 mg/kg。西部和北部湖区底泥重金属含量浓度较高,这与湖西区是全太湖最主要入湖水源有关。五里湖底泥中的汞、铬、铜、锌浓度最高,与湖体封闭,污染淤积有关。另外,湖心区个别点位浓度也较高,而湖口区点位并非底泥浓度都较高,这与底泥随水流、生物等迁移转化有关。故清淤治理工程须根据实际监测结果全面统筹,提高效率。The heavy metals'concentrations in sediment of Taihu Lake were researched on the basis of GIS technologies.The results showed that the concentrations of As,Hg,Pb,Cr,Cd,Cu and Zn in the sediment of Taihu Lake were 10.2,0.079,46.2,79.5,0.37,32.1 and 103.6 mg/kg respectively in 2019.The concentration of heavy metals in the sediment of the western and northern lakes is higher,which may be related to the fact that the western lake is the main water source of Taihu Lake.The concentrations of Hg,Cr,Cu and Zn in sediment of Wuli Lake were the highest,which might be related to the closure of the lake and deposition of the pollution.In addition,the concentrations of some sites in the central lake areas were higher than other sites,and not all heavy metals'concentrations of the sites in the entering lake areas were high.This might be related to the transfer and transformation of sediment with water flow and organisms.Therefore,the desilting projects must be based on the actual monitoring results to overall planning and improve efficiency.

关 键 词：太湖 底泥 重金属 

分 类 号：X825[环境科学与工程—环境工程]