长江流域资源与环境 >> 2010, Vol. 19 >> Issue (z1): 183-.

• 生态环境 • 上一篇    下一篇

长江中游典型湖泊重金属分布及其风险评价——以大通湖为例

李德亮,张婷,余建波,肖调义   

  1. (湖南农业大学动物科学技术学院| 湖南 长沙 410128)
  • 出版日期:2010-08-23

DISTRIBUTION AND RISK EVALUATION OF HEAVY METALS IN TYPICAL LAKES IN MIDDLE REACHES OF THE YANGTZE RIVER——TAKING THE DATONG LAKE FOR EXAMPLE

LI Deliang, ZHANG Ting, YU Jianbo, XIAO Tiaoyi   

  1. (College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128| China)
  • Online:2010-08-23

摘要:

水域环境是水生生物赖以生存及渔业资源持续健康发展的基础。水环境中重金属的含量直接关系到水产品的质量和安全。为评估长江中游典型湖泊的渔业水环境,本研究以大通湖为例,测定了其湖水及沉积物重金属含量,采用地质累积指数法与潜在生态危害指数法对沉积物重金属的污染状况进行了评价,并对长江中游典型湖泊沉积物重金属污染状况及环境风险进行了评估。结果表明:大通湖水中As、Cd、Cu、Pb和Zn的含量均符合国家渔业水质标准要求,除S7、S17、S33和S39点位Zn的含量属国家地表水II类以外,其他所有点位的5种重金属的含量均低于国家地表水I类标准。大通湖沉积物中As、Cd、Cr、Cu、Pb和Zn的含量均高于相应元素的洞庭湖背景值,呈现累积富集的趋势,但各重金属的污染程度及潜在生态危害均较低。除个别湖泊的个别重金属处于中度污染外,长江中游湖泊沉积物的重金属污染程度较轻。〖

Abstract:

Water environment is the foundation for aquatic organisms to survival and for fisheries resources to develop sustainably and healthily.The content of heavy metals in water environment is directly related to the quality and safety of aquatic products.To appraise the water environment of typical lakes in the middle reaches of  the Yangtze River,content of heavy metals in water and sediment of the Datong Lake was measured,the pollution of sediment heavy metals was evaluated by the methods of geoaccumulation index and potential ecological risk index,and the pollution and the potential ecological risk of sediment heavy metals for typical lakes in the middle ranches of the Yangtze River were also estimated in the present study.The results showed that the content of As,Cd,Cu,Pb and Zn in water of the Datong Lake all met the water quality standard for fisheries.Except for the content of Zn for S7,S17,S33 and S39 which belonged to the grade II surface water,the content of 5 heavy metals analyzed for all samples was within the range of environmental quality standard for grade I surface water.The content of As,Cd,Cr,Cu,Pb and Zn in sediment of the Datong Lake was all higher than their corresponding background values for the area of the Dongting Lake,which indicated that there was growing tendency of accumulation for above 6 heavy metals in sediment of the Datong Lake.However,the result showed that the pollution arose from heavy metals in sediment of the Datong Lake was still lighter judged by the methods of geoaccumulation index and potential ecological risk index.The pollution resulted from sediment heavy metals in the typical lakes in the middle ranch of the Yangtze River were lower overall, except for several heavy metals in few lakes which showed slight higher pollution.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 许晗之,汪院生,常本春,王腊春. 江苏太湖地区调水改善水环境研究[J]. 长江流域资源与环境, 2006, 15(Sup1): 92 -96 .
[2] 徐丽华,岳文泽,徐建华. 城市热场剖面的分形维数计算及其意义研究——以上海中心城区为例[J]. 长江流域资源与环境, 2007, 16(3): 384 .
[3] 冯 平,徐向广,李 海. 基于模糊集合分析的汛期分期方法及其应用[J]. 长江流域资源与环境, 2008, 17(3): 495 .
[4] 马荣华,杨桂山. 长江岸线与岛屿演化的空间分形研究——以江苏段为例[J]. 长江流域资源与环境, 2004, 13(6): 541 -545 .
[5] 胡冰川,吴 强,周曙东. 粮食生产的投入产出影响因素分析——基于江苏省粮食生产的实证研究[J]. 长江流域资源与环境, 2006, 15(1): 71 -75 .
[6] 贾 丽, 沈玉芳. 我国生态工业园发展的SWOT分析[J]. 长江流域资源与环境, 2007, 16(6): 711 .
[7] 谢月玉, 王式功, 董安祥, 尚可政. 澳洲冷空气活动与长江中下游降水的联系分析[J]. 长江流域资源与环境, 2009, 18(7): 625 .
[8] 虞孝感, 王磊. 极化区功能识别与评价指标研究[J]. 长江流域资源与环境, 2011, 20(07): 775 .
[9] 孙 君| 郇红艳. 基于F-AHP的产业转移后可持续发展评价模型构建与实证研究[J]. 长江流域资源与环境, 2011, 20(10): 1157 .
[10] 王 丽,曹有挥,袁 丰. 中国FDI区位选择的时空格局演进及影响因素分析[J]. 长江流域资源与环境, 2012, 21(01): 8 .