在山西省3条高速路典型绿化路段路侧设置样带,按距离梯度采集路旁土壤及植物叶片进行Pb、Cr、Cu、Zn重金属含量测定,分析4种重金属污染物在表层土壤及叶片中的扩散格局和相关性。结果表明,山西省主要高速路绿化带路旁土壤中Pb、Cr、Cu和Zn4种重金属污染物相对集中在10~40m范围内,路旁绿化植物叶片中也主要集中在40m范围内,不同重金属元素峰值位置不同,路旁土壤中4种重金属元素之间有良好的同源关系,土壤Cu、Zn与植物叶片中同种元素含量呈正相关关系,土壤Cr、Cu、Zn与植物叶片中4种重金属元素与采样距%Three typical roadside tree-belts of highways were selected in Shanxi province for measuring the concentration of heavy metals (Pb, Cr. Cu, Zn) in roadside surface soils and the tree-belts and analyzing the dispersion pattern and correlation of the 4 heav
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