江苏如东贝类养殖区重金属的含量分布特征及潜在生态风险评价  

Distribution and Potential Ecological Risk Assessment of Heavy Metalsin Shellfish Culture Area of Rudong,Jiangsu Province

作　　者：廖勇[1,2] 黄厚见[1,3] 李磊[1] 袁骐[1] 蒋玫[1] 沈新强[1] 王云龙[1] 

机构地区：[1]中国水产科学研究院东海水产研究所,农业部海洋与河口渔业资源及生态重点开放实验室,上海200090 [2]上海海洋大学水产与生命学院,上海201306 [3]上海海洋大学海洋科学学院,上海201306

出　　处：《中国环境监测》2012年第6期4-9,共6页Environmental Monitoring in China

基　　金：国家科技支撑计划项目(2009BADB7B02);现代农业产业技术体系建设专向资金项目资助(nycytx-47)

摘　　要：根据2010年3月(冬季)、5月(春季)、8月(夏季)、11月(秋季)对江苏省如东县贝类养殖区4次现场监测资料,着重对养殖区海水和表层沉积物中重金属的分布特征进行了分析,并对养殖区进行了生态环境质量评价及潜在生态风险评价。结果表明:海水中重金属污染程度顺序为Pb>Zn>Hg>Cu>As>Cd;表层沉积物中重金属的污染程度顺序依次为Zn>Pb>As>Cu>Hg>Cd;表层沉积物中重金属的潜在生态危害程度顺序依次为Hg>Cd>As>Pb>Cu>Zn。4次调查结果的多种重金属的潜在生态风险指数(RI)均低于140,表明这些重金属对海洋生态系统的潜在生态风险属于低潜在生态风险水平,养殖环境良好。Based on the data of shellfish culture area of Rudong,Jiangsu province in March,May,August and November,2010,the content and distribution of heavy metals in the sea water and surface sediments were analyzed.Eco-environmental quality and potential ecological risk in the shellfish culture area were also assessed.The results showed that：in seawater,the order of pollution extents of heavy metals was PbZnHgCuAsCd.At the same time,in the surface sediments,the order of pollution extents of heavy metals was ZnPbAsCuHgCd.The sequence of potential ecological risk of different heavy metals in surface sediments was HgCdAsPbCuZn.The potential ecological risk index（RI） was less than 140,this revealed that the potential ecological risk of these heavy metals to the ocean ecology system is very light,the environmental quality of the culture areas was good.

关 键 词：贝类养殖区 海水 表层沉积物 重金属 分布特征 生态评价 

分 类 号：X820.4[环境科学与工程—环境工程] Q178.53[生物学—水生生物学]