【摘要】 本文通过调查研究分析 ,对兰州市表层土壤重金属 (Cu、Zn、Pb)含量的空间变化及污染程度进行了评价 ,探讨分析了交通、工业活动以及绿化带对城市重金属污染的影响。结果表明 ,兰州市表层土壤除个别点外均已受到重金属污染 ,其污染程度取决于交通所产生的汽车尾气、扬尘 ;另外 ,工业活动和绿化带对重金属污染的影响也是相当明显的更多还原

【Abstract】 In order to study the distribution of heavy metals and assess the heavy metals (Cu,Zn,Pb)pollution existedin top soils in Lanzhou, detailed investigation ,research and analysis were taken in the research.Then the influence of traffic,industrial activities and green belt to the pollution of heavy metal in city were discussed. All these results showed that top soils in Lanzhou had been polluted by heavy metal .the extent of it was influenced by the exhaust gas of automobile and the dust which were result of traffic ,in addition ,The influence of the green belt and industrial activities was also quite obvious .更多还原