Relationship between urbanization and heavy metal pollution in suburban soils of Shanghai

Based on the data collected from various sources, the connection of urbanization and the distribution of heavy metal in suburban soils in Shanghai was analyzed using Correlation Analysis and Regression Analysis Methods after... [ view full abstract ]

Based on the data collected from various sources, the connection of urbanization and the distribution of heavy metal in suburban soils in Shanghai was analyzed using Correlation Analysis and Regression Analysis Methods after having measured Comprehensive level index of urbanization and heavy metal pollution index of Agricultural soil in Suburban district of Shanghai; besides, the differences of distribution of heavy metal elements in different regions and driving factors were explored so as to provide theoretical support of the coordination of urban development and rational utilization of soil and soil environmental protection. The results showed: (1) The diversity of urbanization level of suburban districts is obvious, the overall shows that suburban is higher than exurban in Shanghai; the cumulation of heavy metal shows varying degrees in different districts, accumulative degrees shows as follows: Zn >Cu> Cr> Pb. (2) The results of Correlation Analysis shows that the relativity of the One-pollution indexes of Zn and Cu, and Comprehensive pollution index of heavy metal with Comprehensive level index of urbanization is obvious, the relativities of Pb and Cr in One-pollution index with Comprehensive level index of urbanization is not obvious; (3) The results of Regression Analysis shows that the fit curves of three indexes (Zn One-pollution Index, Cu One-pollution Index, Comprehensive pollution index) with Comprehensive level index of urbanization have the features of Environmental Kuznets Curve (EKC). But, all suburban districts had not crossed the inflection point excepting Min-hang District, they are still in the left side of the EKC curve.