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Spatial Distribution of Heavy Metals in Agricultural Soils of an Industry-Based Peri-Urban Area in Wuxi, China

机译:无锡市郊工业区农业土壤中重金属的空间分布

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摘要

In industry-oriented peri-urban areas, the heavy metal accumulation in soils caused by industrialization has become a potential threat. The top soil samples from 27 paddy fields and 75 vegetable fields were collected from a typical industrybased peri-urban area of about 8 km2 in Wuxi, China, to study the accumulation and distribution of As, Hg, Cu, Zn,Pb, Cr, and Cd in comparison with heavy metal contents in soils near developed industrial sites (Guangzhou, China;Wallsend Burn of Tyneside, UK; and Osnabrück, Germany). Kriging interpolation was used to determine the metals'spatial distribution. The results showed that most soils, compared to the background values, contained elevated contents of As, Ha, Cu, Zn, and Pb with some having elevated contents of Cd and Cr. Except for less than 10% of the soil samples of Cu, Zn and Cd contents, these heavy metal contents were lower than the soil threshold levels of the Grade Ⅱ criteria for the Chinese environmental quality standard. Probably, because of the scattered distribution and diversity of industries in the study area, spatial distributions of these heavy metals from Kriging interpolation indicated little similarity. Nevertheless,when compared with other areas in the Taihu Lake region, mean contents of Cu, Zn, Pb, and Cd were relatively high in the Wuxi peri-urban area. Additionally, compared to soils in agricultural areas around Guangzhou, Osnabriick, or Wallsend Burn, contents of most heavy metals in soils from this area were lower.
机译:在以工业为中心的城郊地区,由工业化引起的土壤中重金属的积累已成为潜在的威胁。从无锡市一个典型的工业化近郊地区(约8 km2)收集了27个稻田和75个菜田的表层土壤样品,研究了As,Hg,Cu,Zn,Pb,Cr,As的积累和分布,与镉相比,发达工业区附近土壤中的重金属含量(中国广州;英国泰恩赛德郡的沃尔森德·伯恩;德国奥斯纳布吕克)。使用克里格插值法确定金属的空间分布。结果表明,与背景值相比,大多数土壤中As,Ha,Cu,Zn和Pb的含量较高,而Cd和Cr的含量较高。除土壤样品中的铜,锌和镉含量不足10%外,这些重金属含量均低于中国环境质量标准Ⅱ级标准的土壤阈值水平。可能由于研究区域内工业的分散分布和多样性,通过克里格插值法得出的这些重金属的空间分布几乎没有相似性。然而,与太湖地区其他地区相比,无锡城郊地区的平均铜,锌,铅和镉含量相对较高。此外,与广州,奥斯纳布里克或沃尔森德·伯恩周围的农业地区的土壤相比,该地区土壤中大多数重金属的含量较低。

著录项

  • 来源
    《土壤圈(英文版)》 |2007年第1期|44-51|共8页
  • 作者单位

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008 (China);

    Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China);

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008 (China);

    Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China);

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008 (China);

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008 (China);

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008 (China);

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008 (China);

    Department of Soil Science, the Swedish University of Agricultural Sciences, SE-75007, Uppsala (Sweden);

    Department of Soil Science, the Swedish University of Agricultural Sciences, SE-75007, Uppsala (Sweden);

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 农业基础科学;
  • 关键词

    agricultural soil; heavy metals; peri-urban area; spatial distribution;

    机译:农业土壤;重金属;近郊地区;空间分布;
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