CLC number: X82
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Received: 2007-12-24
Revision Accepted: 2008-01-11
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Li-na SUN, Xiao-bo YANG, Wen-qing WANG, Li MA, Su CHEN. Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), China[J]. Journal of Zhejiang University Science B, 2008, 9(3): 271-278.
@article{title="Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), China",
author="Li-na SUN, Xiao-bo YANG, Wen-qing WANG, Li MA, Su CHEN",
journal="Journal of Zhejiang University Science B",
volume="9",
number="3",
pages="271-278",
year="2008",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.B0710629"
}
%0 Journal Article
%T Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), China
%A Li-na SUN
%A Xiao-bo YANG
%A Wen-qing WANG
%A Li MA
%A Su CHEN
%J Journal of Zhejiang University SCIENCE B
%V 9
%N 3
%P 271-278
%@ 1673-1581
%D 2008
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B0710629
TY - JOUR
T1 - Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), China
A1 - Li-na SUN
A1 - Xiao-bo YANG
A1 - Wen-qing WANG
A1 - Li MA
A1 - Su CHEN
J0 - Journal of Zhejiang University Science B
VL - 9
IS - 3
SP - 271
EP - 278
%@ 1673-1581
Y1 - 2008
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B0710629
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 contamination 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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