| 保定市郊污灌区土壤重金属潜在生态风险评价 |
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| 引用本文： | 刘燕玲,刘树庆,薛占军,严永路,侯冬利.保定市郊污灌区土壤重金属潜在生态风险评价[J].安徽农业科学,2011(17):10330-10332. |
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| 作者姓名： | 刘燕玲 刘树庆 薛占军 严永路 侯冬利 |
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| 作者单位： | 河北农业大学资源与环境科学学院;河北省环境监测中心; |
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| 基金项目： | 国家科技支撑计划子课题项目(2008BAJ08B13-07) |
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| 摘 要： | 以保定市郊污灌区为研究对象，采用潜在生态风险指数法对污灌区土壤6种重金属元素进行单因子和复合生态风险评价。结果表明，污灌区11个采样点的Cd平均潜在风险系数为77．9，达到中度生态危害程度，其余元素均未达到轻度生态危害的上限标准，6种重金属平均潜在生态风险指数依次为Cd〉Pb〉Cu〉Zn〉Cr〉Ni。在6种重金属元素中，Cd元素对生态风险的贡献率最高，是构成潜在生态风险的主要因子。另外，污灌区个别样点的土壤重金属综合生态风险指数为223．2，达到中度生态危害程度。与污灌区相比，对照区样点6种元素的单因子潜在生态风险系数均相对较轻，没有达到轻度危害程度，而且对照区4个样点的重金属复合生态风险指数相对于污灌区较轻，但存在Cd风险。
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| 关 键 词： | 污灌区 土壤重金属 潜在生态风险评价 |
Assessment of Potential Ecological Risk of Soil Heavy Metals in Sewage Irrigated Area of Baoding Suburban |
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| LIU Yan-ling et al.Assessment of Potential Ecological Risk of Soil Heavy Metals in Sewage Irrigated Area of Baoding Suburban[J].Journal of Anhui Agricultural Sciences,2011(17):10330-10332. |
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| Authors: | LIU Yan-ling |
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| Institution: | LIU Yan-ling et al(School of Resources and Environment Science,Hebei Agricultural University,Baoding,Hebei 071001) |
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| Abstract: | The ecological risks of soil heavy metals in the sewage irrigated area of Baoding suburban were discussed with the method of single and compound factor potential ecological risk index.The results showed that the soils had serious ecological risks of Cd with the single ecological risk index of six elements in sample points of irrigation area,the risk index was 77.9,and slight risks of Cu,Zn,Cr,Ni and Pb with the index were less than Cd.The risk order of heavy metals was Cd>Pb>Cu>Zn>Cr>Ni.Among six metals,Cd ... |
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| Keywords: | Sewage irrigated area Soil heavy metal Assessment of potential ecological risk |
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