Fig. 2

Box-plots of the concentrations for heavy metals in soil of Jiangmen City (mg/kg). Green line represents the background values of Guangdong province; Black line represents the mean value of each heavy metal.

Box-plots of the concentrations for heavy metals in soil of Jiangmen City (mg/kg). Green line represents the background values of Guangdong province; Black line represents the mean value of each heavy metal.