| 锦州市土壤重金属污染特征及生态风险评价 |
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| 引用本文： | 李秋燕,魏明辉,戴慧敏,贺鹏飞,刘凯.锦州市土壤重金属污染特征及生态风险评价[J].地质与资源,2021,30(4):465-472. |
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| 作者姓名： | 李秋燕 魏明辉 戴慧敏 贺鹏飞 刘凯 |
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| 作者单位： | 中国地质调查局沈阳地质调查中心,辽宁沈阳110034;自然资源部黑土地演化与生态效应重点实验室,辽宁沈阳110034 |
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| 基金项目： | 中国地质调查局地质调查项目"兴凯湖平原及松辽平原西部土地质量地球化学调查"（DD20190520）. |
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| 摘 要： | 以锦州市为研究区，分析8种土壤重金属As、Cd、Hg、Cr、Cu、Pb、Zn、Ni的污染特征，采用单因子污染指数法、地累积指数法、内梅罗综合指数法和Hakanson潜在生态风险指数法确定锦州市土壤重金属污染程度，评价土壤重金属潜在生态风险.结果表明，锦州市土壤重金属Cd和Cr含量高于全国土壤及辽宁省土壤背景值，Cu、Hg、Ni和Pb含量高于辽宁省土壤背景值.采用单因子污染指数评价，Cd为中度污染，Hg、Pb、Cr、Ni和Cu为轻度污染.经地累积指数法评价，Cd为轻中度污染，其他重金属为无污染.内梅罗综合污染指数平均值为2.25，为中度污染等级.研究区综合潜在风险指数平均值为157.34，处于中等生态风险，造成局部地区土壤潜在生态风险较高的重金属为Cd和Hg.
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| 关 键 词： | 重金属 潜在生态风险指数 单因子污染指数 内梅罗综合污染指数 地累积指数 锦州 辽宁省 |
| 收稿时间： | 2020-08-31 |
CHARACTERISTICS OF SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF JINZHOU CITY |
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| LI Qiu-yan,WEI Ming-hui,DAI Hui-min,HE Peng-fei,LIU Kai.CHARACTERISTICS OF SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF JINZHOU CITY[J].Geology and Resources,2021,30(4):465-472. |
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| Authors: | LI Qiu-yan WEI Ming-hui DAI Hui-min HE Peng-fei LIU Kai |
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| Institution: | 1. Shenyang Center of China Geological Survey, Shenyang 110034, China;2. Key Laboratory of Black Land Evolution and Ecological Effects, MNR, Shenyang 110034, China |
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| Abstract: | Taking Jinzhou City as the study area, the paper analyzes the pollution characteristics of 8 soil heavy metals including As, Cd, Hg, Cr, Cu, Pb, Zn and Ni, and uses the methods of single factor pollution index, geoaccumulation index, Nemerow comprehensive index and Hakanson potential ecological risk index to determine the degree of soil heavy metal pollution and evaluate the potential ecological risk. The results show that the contents of Cd and Cr in soil are higher than the soil background values of China and Liaoning Province, and the contents of Cu, Hg, Ni and Pb also higher than the soil background values of the province. The single factor index evaluation results reveal Cd is at moderate pollution level, while Hg, Pb, Cr, Ni and Cu mild pollution. The geoaccumulation index evaluation results reflect Cd is at light-moderate pollution level and other heavy metals pollution-free. The average Nemerow comprehensive pollution index is 2.25, indicating a moderate pollution grade. The average comprehensive potential risk index is 157.34, suggesting the study area is at moderate ecological risk. Cd and Hg contribute to high potential ecological risk in parts of the area. |
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| Keywords: | heavy metal potential ecological risk index single factor pollution index Nemerow comprehensive pollution index geoaccumulation index Jinzhou City Liaoning Province |
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