| 三峡水库入库河流大宁河土壤重金属分布特征 |
| |
| 引用本文： | 张雷,秦延文,郑丙辉,曹伟.三峡水库入库河流大宁河土壤重金属分布特征[J].环境科学与技术,2011,34(4):81-85,139. |
| |
| 作者姓名： | 张雷 秦延文 郑丙辉 曹伟 |
| |
| 作者单位： | 中国环境科学研究院河流与海岸带环境创新基地,北京,100012 |
| |
| 基金项目： | 国家重点基础研究发展规划(973)项目 |
| |
| 摘 要： | 对三峡水库实验性蓄水172 m回落至166 m后入库支流大宁河回水淹没迁建区浸没土壤、消落带土壤和172 m以上背景土壤中重金属含量进行了测定,该地区Cu,Pb的平均含量较高,Zn,Cr的污染最为严重。地累积指数法评价结果显示,Cu、Pb、Zn、Cr的相对污染程度较高,Cd处于较为清洁状态。重金属元素污染程度排序为Cr>Zn>Pb>Cu>Cd。生态风险评价结果表明该地区Cr为极强生态危害等级;Cu,Cd,Pb为低生态风险;Zn为中等或强生态风险等级,生态危害程度的排序为Cr>Zn>Cd>Pb>Cu。
|
| 关 键 词： | 三峡水库回水区 沉积物 重金属 分布 污染评价 |
Distribution and Pollution Assessment of Heavy Metal in the Soil of Backwater Reach from Input River of Three Gorges Reservoir |
| |
| ZHANG Lei,QIN Yan-wen,ZHENG Bing-hui,CAO Wei.Distribution and Pollution Assessment of Heavy Metal in the Soil of Backwater Reach from Input River of Three Gorges Reservoir[J].Environmental Science and Technology,2011,34(4):81-85,139. |
| |
| Authors: | ZHANG Lei QIN Yan-wen ZHENG Bing-hui CAO Wei |
| |
| Institution: | ZHANG Lei,QIN Yan-wen*,ZHENG Bing-hui,CAO Wei(River and Coastal Environmental Research Centre,Chinese Research Academy of Environmental Sciences,Beijing 100012,China) |
| |
| Abstract: | Contents of heavy metal such as Cu,Cr,Pb,Zn and Cd in the submerged soils,wet-dry zone soils and non-submerged soils of the Three Gorges Reservoir were determined.Results indicated that the contents of Cu,Pb,Cd were relatively lower,but Zn,Cr were higher.Results of pollution assessment by index of geoaccumulation showed that the pollution degrees of heavy metal pollutants in the sediments were in the sequence as Cr,Zn,Pb,Cu and Cd.Ecological risk assessment indicated that the order of ecological risk was as... |
| |
| Keywords: | backwater reach of the Three Gorges Reservoir sediments heavy metal distribution pollution assessment |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
