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题名: Spatial pattern of heavy metals accumulation risk in urban soils of Beijing and its influencing factors
作者: Liu, Rui; Wang, Meie; Chen, Weiping; Peng, Chi
刊名: ENVIRONMENTAL POLLUTION
出版日期: 2016-03
卷号: 210, 页码:174-181
关键词: Beijing ; Urbanization ; Soil pollution ; Regression tree ; Heterogeneity
DOI: 10.1016/j.envpol.2015.11.044
部门归属: 城市与区域生态国家重点实验室
英文摘要: Accumulations of heavy metals in urban soils are highly spatial heterogeneity and affected by multiple factors including soil properties, land use and pattern, population and climatic conditions. We studied accumulation risks of Cd, Cu, Pb and Zn in unban soils of Beijing and their influencing based on the regression tree analysis and a GIS-based overlay model. Result shows that Zinc causes the most extensive soil pollution and Cu result in the most acute soil pollution. The soil's organic carbon content and CEC and population growth are the most significant factors affecting heavy metal accumulation. Other influence factors in land use pattern, urban landscape, and wind speed also contributed, but less pronounced. The soils in areas with higher degree of urbanization and surrounded by intense vehicular traffics have higher accumulation risk of Cd, Cu, Pb, and Zn. (C) 2015 Elsevier Ltd. All rights reserved.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35666
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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