The soil heavy metal survey and the evaluation of Jiu-li lake region coal mining subsidence land in Xuzhou city, China

This article selects the subsidence of coal mining in Xuzhou in Jiu-li lake region as the research object,and studies the ecological landscape pattern change in recent years.Based on this,10 sampling points were designed,the enrichment degree and the distribution pattern of soil of Cu,Cd,Pb,Zn,Cr,Hg were analyzed,and the soil heavy metal ecological risk were assessed.Cd, Cu, Pb, Hg in Jiu-li lake region are the soil heavy metal treatment focus.Based on the experimental data and analysis results,suggestions on land reclamation measures and urban planning in Jiu-li lake region were given in this paper.