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    河北省唐—秦地区表层土壤地球化学质量评价

    The evaluation of the present situation of the heavy metal pollution in the top soil of Qinghangdao-Tangshan area, Hebei Province

    • 摘要: 提要:唐山—秦皇岛地区是河北省重要的农业经济区,土壤质量的安全评价具有十分重要的现实意义。笔者利用唐山—秦皇岛地区表层土壤中重金属元素分析结果,在考虑土壤pH值对重金属元素含量影响的前提下,采用单因子指数法和尼梅罗综合指数法对区内土壤质量进行了评价。结果表明,区内主要的重金属污染元素是Ni、Cr、Cu、Cd 4种元素。其中Ni、Cr、Cu 3种重金属元素污染区域主要集中在卢龙、抚宁、昌黎3个县交界处及北部的局部区域。Cd元素污染主要集中在唐海县西部和西北部。综合评价表明,唐山—秦皇岛地区绝大部分区域处于无污染的水平,土壤的地球化学质量是较好的。

       

      Abstract: Abstract:The Tangshan-Qinghuangdao area is an important agro-economic tract in Hebei Province, and the safety evaluation of its soil quality has a considerable realistic significance. According to the regional topsoil geochemical data, the authors employed the single factor index method and the Nemerow synthetic index method to make soil quality assessment. The results indicate that the pollution of heavy metal elements is caused mainly by Ni, Cr, Cu and Cd. The polluted areas of heavy metal elements Ni, Cr and Cu are mainly concentrated in the border area and the northern part of Lulong, Funing and Changli counties, whereas the polluted areas of Cd heavy metal element are mainly concentrated in the western and northwest parts of Tanghai County. The environmental geochemical quality of most soils in Tangshan-Qinghuangdao area is proved to be pretty well, with no obvious pollution.

       

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