徐友宁, 张江华, 赵阿宁, 柯海玲. 2008: 小秦岭某金矿区农田土壤重金属元素污染的潜在生态危害评价. 地质通报, 27(8): 1272-1278.
    引用本文: 徐友宁, 张江华, 赵阿宁, 柯海玲. 2008: 小秦岭某金矿区农田土壤重金属元素污染的潜在生态危害评价. 地质通报, 27(8): 1272-1278.
    XU You-ning, ZHANG Jiang-hua, ZHAO A-ning, KE Hai-ling. 2008: Evaluation of the potential ecological risk of heavy metals in farmland soils in a certain gold mining area, Xiaoqinling. Geological Bulletin of China, 27(8): 1272-1278.
    Citation: XU You-ning, ZHANG Jiang-hua, ZHAO A-ning, KE Hai-ling. 2008: Evaluation of the potential ecological risk of heavy metals in farmland soils in a certain gold mining area, Xiaoqinling. Geological Bulletin of China, 27(8): 1272-1278.

    小秦岭某金矿区农田土壤重金属元素污染的潜在生态危害评价

    Evaluation of the potential ecological risk of heavy metals in farmland soils in a certain gold mining area, Xiaoqinling

    • 摘要: 土壤重金属元素污染的潜在生态危害程度及空间分布是土壤污染防治的前提和基础。为揭示土壤中重金属元素的潜在生态危害程度,在前期土壤污染调查评价的基础上,采用Hakanson的潜在生态危害指数,以研究区西邻无工矿影响的农田土壤重金属元素含量均值作为参比值,对矿区农田土壤进行了重金属元素污染的潜在生态环境危害评价。结果表明,Hg是农田土壤中潜在生态危害最严重的元素,其次是Cd和Pb。Hg、Pb、Cd对土壤污染危害的贡献率之和达97.41%,仅Hg的贡献率就达84.37%。多个重金属元素潜在生态危害很强、极强的土壤样品占样品总数的49.62%,影响面积达74.54%。从西北向东南,土壤重金属元素潜在生态危害程度激增,这种空间分布与目前金矿选冶的布局一致。土壤重金属元素潜在生态环境危害的后果已被前期研究成果所证实。

       

      Abstract: In order to reveal the potential ecological risk grades of heavy metals in soils, the authors used Hakanson’s potential ecological risk index and take the means of heavy metal contents in farmland soils unaffected by industrial and mining operations west of the study area in Xiaoqinling as evaluation reference values to evaluate the potential ecological risk of heavy metals in farmland soils in mining areas on the basis of the previous soil pollution investigation and. The element with the most serious potential ecological risk in farmland soils is Hg, and next come Cd and Pb. The total contribution rate of Hg, Pb and Cd to soil pollution risk is 97.41%, and the contribution rate of Hg alone reaches 84.37%. The soil samples of several elements with high and very high potential ecological risk account for 49.62% of the total samples, with an influence area up to 74.54%. From northwest to southeast in the study area, the degree of potential ecological risk of heavy metals in soils increases dramatically. This spatial distribution is consistent with the distribution of gold ore dressing and smelting in the study area. The consequences of the potential eco-environmental risk of heavy metals in soils have been proved by previous research.

       

    /

    返回文章
    返回