中文摘要：

在全面收集国内现有降尘重金属研究数据基础上,应用地积累指数评价法对全国范围内降尘重金属进行生态风险评价,并使用Arc View3.3做出全国降尘重金属分布图。结果表明,降尘中As、Hg、Cd、Cr、Cu、Ni、Pb和Zn浓度的对数均服从正态分布,降尘重金属元素的污染水平排序为Cd〉Pb〉Zn〉Cu〉Hg〉As〉Cr〉Ni,东南沿海地区、西南地区降尘重金属污染较为严重。

英文摘要：

The data of dust heavy metals were collected comprehensively from the research papers about in China,the index of geo- accumulation was applied and the spatial distribution of dust heavy metals were drawn by Arc View 3. 3. The results showed that the concentration logarithmic of As,Hg,Cd,Cr,Cu,Ni,Pb and Zn in dust were in normal distribution. Heavy metals pollution level ranking was Cd〉Pb〉Zn〉Cu〉Hg〉As〉Cr〉Ni. Heavy metal pollution in the southeast coastal area and southwest area were relatively serious and need attention.