| 陇海铁路圃田段路旁土壤重金属潜在生态风险评价 |
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| 引用本文： | 徐欣,马建华.陇海铁路圃田段路旁土壤重金属潜在生态风险评价[J].河南气象,2009(1):29-32. |
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| 作者姓名： | 徐欣 马建华 |
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| 作者单位： | 河南大学资源与环境研究所; |
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| 基金项目： | 河南省重点科技攻关项目(0721021500)资助 |
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| 摘 要： | 以陇海铁路圃田段为例,采用Hakanson指数法,对铁路旁土壤重金属（Cd、Pb、Cu、Zn、Cr和N i）的潜在生态风险进行了评价。结果表明,铁路旁土壤中重金属元素出现不同程度富集,以Zn和Pb的积累最为明显,最大含量都分布在距路基30 m范围内。Cd的潜在生态风险最大,在距路基100 m范围内,单项风险系数均在80以上,呈重度风险,最大风险值出现在路基处,高达138,之后逐渐降低;其余重金属呈低风险状态。距路基20 m范围内,潜在生态风险指数均在150以上,达到中等生态风险程度,之后逐渐降低。镉（Cd）的潜在风险占总风险的68.20%-73.37%,其他重金属的贡献很小。
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| 关 键 词： | 陇海铁路 土壤 重金属 潜在生态风险 |
Potential Ecological Risk Assessment of Heavy Metals in Roadside Soils on Putian Section of Longxi-Haizhou Railway |
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| Xu Xin,Ma Jianhua.Potential Ecological Risk Assessment of Heavy Metals in Roadside Soils on Putian Section of Longxi-Haizhou Railway[J].Meteorology Journal of Henan,2009(1):29-32. |
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| Authors: | Xu Xin Ma Jianhua |
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| Institution: | Institute of Resources and Environment of Henan University;Kaifeng 475004;China |
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| Abstract: | The heavy metals(Cd,Pb,Cu,Zn,Cr,Ni) in roadside soils on Zhengzhou-Putian section of the Longxi-Haizhou railway were studied for the potential ecological risk by Hakanson exponential method.The results show that the highest contents of all the six metals distributed within 30 m from the railway,the accumulation of Zn and Pb was obvious.The highest potential ecological risk index of the heavy metals was Cd,its average of Ei was all above 80 within 100 m from the roadbed of the railway,as it has caused seriou... |
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| Keywords: | Longxi-Haizhou railway soil heavy metal potential ecological risk |
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