矸石山植被恢复对土壤中重金属的影响

通过对兴隆庄煤矿矸石山覆土绿化造林20a土壤中重金属状况进行分析,由于树木对土壤重金属的吸收固定作用,土壤中Zn、Cu、Hg、Pb、Cr和As的含量均小于矸石中的含量。局部土壤中Zn、Hg和As的超标,可能是造成矸石山植被中出现树木枯死的原因。 The paper discussed the condition of heavy metal in soil of Xinglongzhuang coal waste pile which vegetation restoration 20 years. The results showed that the contents of Zn,Cu,Hg,Pb,Cr and As in topsoil were lower than in the coal mining waste. The contents of Zn,Hg and As in local soil exceeded soil quality standard which maybe cause some plants death