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现代地质 ›› 2011, Vol. 25 ›› Issue (5): 1007-1012.

• 环境地球化学 • 上一篇    下一篇

青海民和—海石湾一带土壤重金属异常生态效应评价

许光1,2,章巧秋3,姬丙艳1,2,张亚峰2,唐俊红3   

  1. 1中国地质大学 地球科学与资源学院,北京100083;2. 青海省第五地质矿产勘查院,青海 西宁810028;
    3. 杭州电子科技大学 材料与环境工程学院,浙江 杭州310018
  • 收稿日期:2011-01-12 修回日期:2011-08-28 出版日期:2011-10-26 发布日期:2011-11-03
  • 通讯作者: 唐俊红,女,教授,博士,1964年出生,地球化学专业,主要从事环境地球化学、同位素地球化学的研究工作。Email:tangjhjh@163.com。
  • 作者简介:许光,男,高级工程师,博士研究生,1971年出生,勘查地球化学专业,从事地球化学勘查工作。 Email:xnxuguang@163.com。
  • 基金资助:

    国家自然科学基金项目(40973076)。

Estimation of Ecological Appraisal of Heavy Metals in Soil in MinheHaishiwan,Qinghai

 HU  Guang-1, 2 , ZHANG  Qiao-Qiu-3, JI  Bing-Yan-1, 2 , ZHANG  E-Feng-2, TANG  Dun-Gong-3   

  1. 1School of Earth Sciences and Resources,China University of Geosciences, Beijing100083, China; 2. Fifth Institute of Geological and
    Mineral Exploration of Qinghai Provincial Bureau of Geology and Mineral Resources, Xining, Qinghai810028, China;
    3. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou,Zhejiang310018, China
  • Received:2011-01-12 Revised:2011-08-28 Online:2011-10-26 Published:2011-11-03

摘要:

采用单因子污染指数法、内梅罗污染综合指数法和Hakanson潜在生态风险指数法,定量评价了青海民和—海石湾一带土壤重金属异常元素的污染现状和异常区的潜在生态风险危害性,同时对研究区土壤重金属异常的生态效应进行了初步评价。结果表明:土壤重金属污染因子的高低顺序为Hg>Cd>Pb=Cr;主要异常元素的生物有效性排序为Cd>Hg>Pb;异常元素的潜在生态危害性排列为Hg>Cd>Pb>Cr;在小麦、玉米等农作物样品中,尽管异常元素的含量远低于国家规定的粮食安全限制,但Hg的较高潜在生态危害性和Cd的高生物有效性,导致异常区内Hg、Cd的污染防治形势最为严峻。

关键词: 多目标区域地球化学调查, 内梅罗污染指数, 潜在生态风险指数, 土壤重金属, 青海民和&mdash, 海石湾

Abstract:

In this paper, the pollution of anomalous elements in soil in MinheHaishiwan,Qinghai and its potential ecological hazard were evaluated quantitatively through single factor pollution index method, Nemerow pollution index method and Hakanson potential ecological risk index method. Additionally, the ecological effect in anomalous areas was also discussed. The results show that the pollution factors of heavy metals are in order of Hg>Cd>Pb=Cr in the soil. The bioavailability of the anomalous elements follows the sequence of Cd>Hg>Pb. The potential ecological hazard of anomalous elements was as follows: Hg>Cd>Pb>Cr. Although the concentration of anomalous elements in crops such as wheat and corn was far below the required food security limits, the situation of pollution control was still severe due to the high potential ecological hazard of Hg and high bioavailability of Cd.

Key words: multipurpose regional geochemical survey, Nemerow pollution index, potential ecological risk index, heavy metals in soil, MinheHaishiwan, Qinghai