Abstract
The central part of Wuhan City was chosen as soil sampling region to investigate the spatial distribution of heavy metals in roadside soils and the correlation between city road net and the spatial distribution of heavy metals. The total number of samples collected is 224 and the concentrations of As, Cr, Cu, Ni, Pb and Zn in soils were detected. The spatial distribution of heavy metals in roadside soils was characterized by applying Universal Kriging interpolation model. The correlation between road net and the spatial distribution of heavy metals was analyzed based on Voronoi diagram. The results show that there is high correlation between the road net and the distribution of heavy metals in the range of 400 m on both sides of the main road of the study area. There is no strong relationship between road net and heavy metals in the soil of the whole study area which indicates that the road net of Wuhan is not the main source of heavy metal contaminate in soils.
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