| Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area （SZIA）, China |
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| 作者姓名： | Sun LN Yang XB Wang WQ Ma L Chen S |
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| 作者单位： | Lina SUN （Key Laboratory of Eco-Remediation of Contaminated Environment and Resourcilization Technology,Shenyang University, Shenyang 110044, China） ;
Xiao-e YANG（Liaoning Geology Academe, Shenyang 110032, China） ;
Wen-qing WANG（Liaoning Geology Academe, Shenyang 110032, China） ;
Li MA（Liaoning Geology Academe, Shenyang 110032, China） ;
Su CHEN（Key Laboratory of Eco-Remediation of Contaminated Environment and Resourcilization Technology,Shenyang University, Shenyang 110044, China） ; |
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| 基金项目： | Project supported by the Item of Shenyang Xi River Geochemistry Evaluation, China |
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| 摘 要： |
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| 关 键 词： | 铜 环境污染 土壤 分配模式 |
| 收稿时间： | 24 December 2007 |
| 修稿时间： | 11 January 2008 |
Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), China |
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| Sun LN,Yang XB,Wang WQ,Ma L,Chen S.Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), China[J].Journal of Zhejiang University Science,2008,9(3):271-278. |
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| Authors: | Li-na Sun Xiao-bo Yang Wen-qing Wang Li Ma Su Chen |
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| Institution: | [1]Key Laboratory of Eco-Remediation of Contaminated Environment and Resourcilization Technology,Shenyang University, Shenyang 110044, China [2]Liaoning Geology Academe, Shenyang 110032, China |
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| Abstract: | Heavy metal contamination of soils, derived from sewage irrigation, mining and inappropriate utilization of various agrochemicals and pesticides, and so on, has been of wide concern in the last several decades. The Shenyang Zhangshi Irrigation Area (SZIA) in China is a representative area of heavy metal contamination of soils resulting from sewage irrigation for about 30 years. This study investigated the spatial distribution and temporal variation of soil cadmium (Cd) and copper (Cu) contamination in the SZIA. The soil samples were collected from the SZIA in 1990 and 2004; Cd and Cu in soils was analyzed and then the spatial distribution and temporal variation of Cd and Cu in soils were modeled using Kriging methods. The results show that long-term sewage irrigation had caused serious Cd and Cu contamination in soils. The mean and the maximum of soil Cd are markedly higher than the levels in second grade standard soil (LSGSS) in China, and the maximum of soil Cu is close to the LSGSS in China in 2004 and is more than the LSGSS in China in 1990. The contamination magnitude of soil Cd and the soil extent of Cd con- tamination had evidently increased since sewage irrigation ceased in 1992. The contamination magnitude of soil Cu and the soil extent of Cu contamination had evidently increased in topsoil, but obviously decresed in subsoil. The soil contamination of Cd and Cu was mainly related to Cd and Cu reactivation of contaminated sediments in Shenyang Xi River and the import of Cd and Cu during irrigation. The eluviation of Cd and Cu in contaminated topsoil with rainfall and irrigation water was another factor of temporal-spatial variability of Cd and Cu contamination in soils. |
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| Keywords: | Cadmium (Cd) Copper (Cu) Contamination of soils Spatial distribution Shenyang Zhangshi Irrigation Area (SZIA) |
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