武汉市城区绿地土壤铅的分布规律

以武汉市中心城区主要公园绿地、道路绿化带、住宅区绿地和单位附属绿地土壤为对象,研究了土壤铅的分布规律。结果表明：武汉市城区绿地土壤全铅含量为29.47~2 261.58 mg/kg,平均为149.14 mg/kg,是武汉市土壤铅背景值（25.30 mg/kg）的6倍;武汉市城区绿地土壤中铅分布空间差异大,局部污染比较严重,其中以青山区铅浓度最高。选取区域随着垂直道路水平距离的增加,土壤中铅含量的分布呈现一定的规律性。

Distribution Rules of Soil Lead in Urban Green Space of Wuhan

The distribution rules of soil lead in the green space in park,road greenbelts,green space in residential area and green space affiliated to units of Wuhan central urban area were studeid.The results showed that the lead contents were 29.47-2 261.58 mg/kg,and the average was 149.14 mg/kg in the green space,which was 6 times than the background value of soil lead.There was great difference in the distribution space of soil lead in urban green space of Wuhan,the lead pollution in some regions was very severe,and the lead content in Qingshan District was the highest.The distribution of soil lead content changed regularly with the increasing of horizontal distance.