Assessment of Heavy Metal Contamination of Soil in Kunming
With the analyses of eight different heavy metal elements (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn)’ contents and distributions in the topsoil of Kunming City, the results show that the average concentrations of these eight elements in the topsoil of Kunming City were much higher than the background concentrations in soil in China, and the pollution assessments with the Single factor index method and Nemerow Pollution Index method, the result shows that in Kunming City, the Xishan District and Wuhua District exist a certain degree of heavy metal pollution problem of soil, but the soil environment qualities of Panlong District and Guandu District are better than other districts; analyze the causation of heavy metal pollution of soil with the elements data and current situation of Kunming City, the heavy metal pollution sources mainly from industrial pollution and traffic pollution.