环渤海海域沉积物重金属分布特征及生态环境评价  

DISTRIBUTION PATTERN OF HEAVY METALS IN THE SURFACE SEDIMENTS OF THE AREA OF CIRCUM-BOHAI BAY AND ECOLOGICAL ENVIRONMENT ASSESSMENT

作　　者：林曼曼[1,2,3] 张勇[2,3] 薛春汀[2,3] 于开宁[1] 刘珊珊[1,2,3] 毕世普[2,3] 胡刚[2,3] 

机构地区：[1]石家庄经济学院,石家庄050031 [2]国土资源部海洋油气资源和环境地质重点实验室,青岛266071 [3]青岛海洋地质研究所,青岛266071

出　　处：《海洋地质与第四纪地质》2013年第6期41-46,共6页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金项目(41376079;41206073);1:25万青岛幅海洋区域地质调查(GZH200900501);沿海经济带多目标区域地球化学系列图件编制(1210820508)

摘　　要：对环渤海海域表层沉积物中重金属含量进行了测定,分析了重金属元素的分布特征,以及影响重金属元素分布的因素,采用尼梅罗综合指数法对研究区进行了生态评价。结果显示,辽东湾北部海域是环渤海湾3个调查区中重金属污染最严重的区域。其中Cd和Hg超标严重。空间分布特征整体表现为重金属高值区在辽东湾北部西侧小凌河口外及葫芦岛附近海域。由于物源和粒度的影响,Cu、Pb、Zn的高值区具有相似的分布区域。生态评价结果显示研究区内重污染地区主要分布在辽东湾葫芦岛近岸海域。The distribution pattern of heavy metals in the surface sediments around the Circum-Bohai Bay and its influencing factors were studied in the paper. The Nemerow comprehensive index method is adopt- ed for ecological assessment. Results show that the Liaodong Bay is the most seriously polluted area from among the three studied areas. Cd and Hg are highly beyond the standard. Spatially, high values occur in the west of the northern Liaodong Bay and the Xiaoling River estuary off the Huludao. Cu, Pb and Zn show similar distribution pattern due to similar provenance and granularity. The assessment of ecological risk indicates that the area near Huludao is the most vulnerable area in heavy metal pollution.

关 键 词：重金属 分布特征 生态评价 环渤海海域 

分 类 号：P736.21[天文地球—海洋地质]