贵州省地表环境重金属空间分布特征研究

摘要

通过对贵州省重金属污染相关文献和数据的收集与分析，全省Pb、Zn、As、Hg和Cd的污染最为突出。在矿业活动的影响下，不同环境介质中重金属含量的空间分布有明显的区域性和不均匀性。污染区内土壤、水体和沉积物中重金属有明显不同程度的富集。在水动力作用下，水体和沉积物中重金属含量随离污染源距离增加而减小。与国内其它湖库相比，贵州省湖库水体重金属含量处于同一水平。%literature retrospect found that pollution of Pb,Zn,As,Hg,Cd in Guizhou Province was extremely serious. Mining activities affected the distribution of heavy metals in different environmen-tal media largely which was spatially inhomogeneity,and enriched in soil,water and sediment in mining areas. The concentrations of heavy metals in water and sediment decreased with the increasing distance from the pollution source due to the activity of water migration. The concentrations of heavy metals in lakes( or reservoirs)of Guizhou Province were at the similar level as those of other prov-inces.