| Spatial analysis of elements in soils from Chengdu City |
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| 作者姓名： | Shuyun XIE Zhengyu BAO Bing LI |
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| 作者单位： | [1]State Key Lab of Geological Processes and Mineral Resources （GPMR）, China University of Geosciences （CUG）, Wuhan 430074, China [2]Geochemical Institute, CUG, Wuhan 430074, China |
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| 摘 要： | Three kinds of spatial analysis methods （geostatistics, concentration-area fractal model and the multifractal analysis called the moment method） were used for almost 50 elements, including heavy metals, disperse elements, rare elements and even others, in 6586 top soil （0-20 cm） samples and 1833 deep soil （150-200 cm） samples from Chengdu metropolitan area of 12400 km^2, southwestern China. The ranges of spatial correlation revealed by variograms are quite different for different kinds of elements in the top and deep soils. The most interest is the fact that the multifractal spectra of environmentally important elements such as Pb, Cr, Cd and Ni in top soils in the metropolitan area show systematic change from those in the deep soils, revealing a strong anthropogenic addition, while Hg, Zn, As, Cu and all common elements show no such kind of addition. In terms of multifractal properties based on the multifractal spectrum curves, those disperse and rare elements show great deviation from other major and trace elements, which is also of great interest.
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| 关 键 词： | 分形 地质统计学 环境评估 元素 土壤 成都市 |
Spatial analysis of elements in soils from Chengdu City |
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| Shuyun XIE Zhengyu BAO Bing LI.Spatial analysis of elements in soils from Chengdu City[J].Chinese Journal of Geochemistry,2006,25(B08):7-8. |
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| Abstract: | |
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| Keywords: | fractal multifractal geostatistics environmental assessment |
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