| 洞庭湖沉积物的重金属污染及生态风险评估 |
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| 引用本文： | 左兰兰,赵运林,许永立.洞庭湖沉积物的重金属污染及生态风险评估[J].江西农业学报,2013(6):119-121. |
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| 作者姓名： | 左兰兰 赵运林 许永立 |
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| 作者单位： | 湖南农业大学生物科学技术学院 |
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| 基金项目： | 国家社会科学基金项目(08BJY071);2011年湖南省软科学研究计划重点课题(2011ZK2007);国家财政部环保部农村环境综合整治项目(2011CBJNC05);环保部公益基金项目(201009047) |
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| 摘 要： | 根据2003～2010年的数据,分析和评价了洞庭湖沉积物中重金属污染及生态风险。各重金属平均含量的顺序为:Zn>Cr>Cu>Pb>As>Cd>Hg。采用Muller地积累指数法的评价结果为:Zn处于基本无污染状态;As、Cr、Pb处于轻度污染状态;Hg、Cu处于偏中度污染状态;Cd处于偏重度污染状态。采用Hakanson潜在生态风险指数法的分析结果为:As、Cr、Pb、Cu、Zn均处于低潜在生态风险水平;Hg处于较高潜在生态风险水平;Cd处于极高潜在生态风险水平。
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| 关 键 词： | 洞庭湖 重金属 沉积物 生态风险 污染 |
Pollution of Heavy Metals in Sediment of Dongting Lake and Their Ecological Risk Assessment |
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| ZUO Lan-lan,ZHAO Yun-lin,XU Yong-li.Pollution of Heavy Metals in Sediment of Dongting Lake and Their Ecological Risk Assessment[J].Acta Agriculturae Jiangxi,2013(6):119-121. |
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| Authors: | ZUO Lan-lan ZHAO Yun-lin XU Yong-li |
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| Institution: | (College of Bioscience and Biotechnology,Hunan Agricultural University,Changsha 410128,China) |
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| Abstract: | Based on the investigative data of the year 2003 ～ 2010,the paper analyzed and evaluated the pollution of heavy metals and their ecological risk in the sediment of the Dongting Lake.The order of the average concentration of heavy metals was: Zn > Cr > Cu > Pb > As > Cd > Hg.The assessment results by using Muller's geo-accumulation index method were that: Zn was at little pollution level;As,Cr and Pb were all at light pollution level;Hg and Cu were all at middle pollution level;Cd was at heavy pollution level.The analysis results by using Hakanson's potential ecological risk index method were that: As,Cr,Pb,Cu and Zn were all at low potential ecological risk level;Hg was at high potential ecological risk level;Cd was at extremely high potential ecological risk level. |
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| Keywords: | Dongting Lake Heavy metal Sediment Ecological risk Pollution |
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