title: Identification of heavy metal pollutants using multivariate analysis and effects of land uses on their accumulation in urban soils in Beijing, China.
abstract: In order to evaluate the current state of the environmental quality of soils in Beijing, we investigated contents of 14 metals in Beijing urban soils inside the 5th ring road by even grids sampling. Statistic analyses were conducted to identify possible heavy metal pollutants, as well as the effects of land uses on their accumulation. Our results revealed that the urban soils in Beijing were contaminated by Cd, Pb, Cu, and Zn. Land uses and urbanization ages affected the accumulation of the four heavy metals in soils significantly. Soils in industrial areas have the highest average Cu and Zn contents, while Pb contents in park areas and Cd in agricultural areas are the highest. The accumulations of Pb and Zn in urban soils increase significantly with sampling plots approaching the city center. And Pb, Cd, and Zn contents in soils in traffic areas also tend to increase in the city center. However, residential areas have the lowest contents of all the four heavy metals.
authors: State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese academy of sciences, Beijing 100085, China.
authors: Meie
authors: M
authors: Wang
authors: Bernd
authors: B
authors: Markert
authors: Weiping
authors: W
authors: Chen
authors: Chi
authors: C
authors: Peng
authors: Zhiyun
authors: Z
authors: Ouyang
mesh_terms: D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D004787:Environmental Pollution / Q000706:statistics & numerical data*; D019216:Metals, Heavy / Q000032:analysis*; D015999:Multivariate Analysis; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014507:Urbanization / Q000639:trends
chemical_list: D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants