Accumulation Characteristics and Pollution Evaluation of Soil Heavy Metals in Different Land Use Types: Study on the Whole Region of Tianjin.

Cr-Ni had a significant correlation in all jurisdictions, and a strong and significant correlation in Baodi, Ninghe, Jizhou and the urban area; Cr-Pb had a significant correlation in all jurisdictions, and a strong and significant correlation in Wuqing; Ni-Cu, Ni-Zn, Ni-Pb, and Ni-Cr had significant correlations in most jurisdictions, and Ni-Cu and Ni-Pb were mostly highly correlated; Cu-Ni, Cu-Cr, Cu-Zn, Cu-Pb had a significant correlation in most jurisdictions and Cu-Ni, Cu-Zn, Cu-Pb showed a strong and significant correlation; Cu-Cd showed a highly significant correlation in Dongli, Beichen, Ninghe and urban areas; Zn-Ni, Zn-Cu, Zn-Pb, and Zn-Cd had significant correlations in most jurisdictions, among which Zn-Cd had a strong and significant correlation in all jurisdictions; As and other elements were weakly correlated or uncorrelated in all jurisdictions.

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