为全面深入掌握华北平原的重金属元素分布状况,本文以2002年以来在华北平原范围内的3省2市开展的区域土壤地球化学调查数据为基础,制得华北平原区域内As、Hg、Cr、Cu、Ni、Pb、Zn等7种重金属元素的土壤环境地球化学图.本文分析了该7种重金属元素在华北平原的分布规律,并分析了成因.在7种重金属元素的基础上,本文还制得华北平原土壤环境重金属元素的综合评价图.本文对该土壤环境综合评价图进行了分析,综合表达了重金属元素在华北平原的总体分布状况.土壤环境元素地球化学图与综合图共同分析得出的结论可以为农业、环保、医疗及相关政府决策部门提供重要依据.%In order to detect the distribution of heavy metals in the North China Plain, the authors drew element geochemical maps of As, Hg, Cr, Cu, Ni, Pb and Zn on the basis of geochemical investigation data obtained from 3 provinces and 2 cities in the North China Plain since 2002. Distribution regularity of these heavy metals was discussed in this paper, and causes were analyzed too. Based on geochemical maps of these 7 heavy metal elements, the authors further compiled a comprehensive evaluation map of heavy metal elements, which intergratedly expresses the distribution of heavy metal elements in the North China Plain. An analysis of the comprehensive evaluation map was also made. The conclusions drawn from the comprehensive evaluation map in combination with the element geochemical maps can provide scientific basis for agricultural, environmental, medical and other policy-making departments of the government.
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