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引用本文:万金保,闫伟伟,谢婷.鄱阳湖流域乐安河重金属污染水平.湖泊科学,2007,19(4):421-427. DOI:10.18307/2007.0410
WAN Jinbao,YAN Weiwei,XIE Ting.Research on heavy metals pollution status of Le'an River, Lake Poyang Basin. J. Lake Sci.2007,19(4):421-427. DOI:10.18307/2007.0410
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鄱阳湖流域乐安河重金属污染水平
万金保, 闫伟伟, 谢婷
南昌大学环境科学与工程学院教育部鄱阳湖湖泊生态与生物资源利用实验室, 南昌 330029
摘要:
乐安河是鄱阳湖五大人湖水系中重金属污染最严重的水域。为研究其污染现状, 于2003-2004年度对乐安河水体、底泥及水生生物的重金属污染进行了调查与分析。结果表明, 乐安河水体中的重金属除Cu的含量超出地表水环境质量标准Ⅲ类标准外, 其它各项监测指标均能达到地表水环境质量Ⅲ类标准。乐安河底泥的重金属含量平均值与国家土壤环境质量相比, Cu的平均值超出了三级标准, 而Pb和Zn的含量指标均符合三级标准;通过地质累积指数评价结果表明, 乐安河底泥中Cu为严重污染, Pb为偏中度污染, Zn为中度污染。乐安河水生植物对Cu, Pb, Zn都有不同程度的富集, 根据富集系数评价表明, 植物对Cu的平均富集能力相对较强, 其次是Pb和Zn。浮游动物、植物和底栖动物也受到不同程度的污染, 其分布和数量因河段水质变化的影响也出现类似的波动。
关键词:  乐安河  底泥  水生生物  重金属污染  鄱阳湖流域
DOI:10.18307/2007.0410
分类号:
基金项目:江西省科学技术厅科技攻关项目(2004B0304300)资助
Research on heavy metals pollution status of Le'an River, Lake Poyang Basin
WAN Jinbao, YAN Weiwei, XIE Ting
Key Lab. of Lake Poyang Ecology and Bio-resource Utilization, Environment Science and Technology College, Nanchang University, Nanchang 330029, P. R. ChinaCollege, Nanchang University, Nanchang 330029, P. R. China
Abstract:
The Le' an River is the most seriously heavy metals polluted area of five rivers into Lake Poyang. Based on a survey of heavy metal pollution status of water, sediment and aquatic organisms during 2003-2004, the results indicate that the content of every component except Cu in the water meet class III criterion for surface water e-valuation. Comparing with environmental quality standard for soils, the average sediment concentration of Pb and Zn in sediment did meet class III criterion except Cu. The indexes of geography accumulation results indicate that Cu pollution has nearly reached a serious stage of pollution, and Pb and Zn only superficially pollute the sediment. Cu, Pb and Zn are enriched differently by aquatic plants in the sampling sites. According to the assessment of enrichment coefficient, the average enrichment coefficient of Cu pollution in aquatic plants was relatively higher than Pb and Zn. Zooplankton, phytoplankton and benthos species had been polluted at different extents, the distribution and amount of which had similarly fluctuated according to the variation of water quality.
Key words:  Le' an River  sediment  aquatic organisms  heavy metals pollution  Lake Poyang Basin
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