...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chinese Geographical Science >Spatial distribution and changes of heavy metals of agricultural lands in typical pregrading coast in Dongtai City, Jiangsu Province, China
【24h】

Spatial distribution and changes of heavy metals of agricultural lands in typical pregrading coast in Dongtai City, Jiangsu Province, China

机译：中国江苏省东台市典型退化海岸农田土壤重金属的空间分布与变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

According to the historical changes of coastal lines, seven soil sampling districts, from land to sea, were arranged in Dongtai City, Jiangsu Province to sample soils from surface and profile. Concentrations of seven major heavy metals (HMs), granularity, pH, organic matters and C/N of the soil samples were analyzed. Results show that concentrations of heavy metals in agricultural land present a certain spatial variance, decreasing from land to sea. Pollution assessment indicates that the agricultural soils were not polluted by HMs, but the potential pollution of Cu and Hg needs to be alerted. Different HMs accumulate in the surface and sub-surface of the soil profiles, and concentrations of Hg and Pb decrease significantly with the increment of soil depth. Concentrations of HMs exhibit a significantly negative correlation to pH, but have no significant relation with organic matters in soil. Principle component analysis show that the concentrations of HMs relate to the land use history. Concentrations of Hg, Ni and Cr in soil are closely related with land use history, and concentrations of Pb, Cu and Cr are affected by land use history as well as other factors. However, there is no significant relation between concentration of As and land use history.
机译：根据沿海沿线的历史变化，在江苏省东台市设置了从陆地到海洋的七个土壤采样区，从地表和剖面上采样土壤。分析了土壤样品中7种主要重金属（HMs）的浓度，粒度，pH，有机物和C / N。结果表明，农田中重金属的含量存在一定的空间变化，从陆地到海洋逐渐减少。污染评估表明，农业土壤并未受到重金属污染，但需警惕铜和汞的潜在污染。不同的HMs累积在土壤剖面的表面和亚表面，并且Hg和Pb的浓度随土壤深度的增加而显着降低。 HMs的浓度与pH呈显着负相关，但与土壤中的有机物无显着关系。主成分分析表明，HMs的浓度与土地利用历史有关。土壤中Hg，Ni和Cr的浓度与土地使用历史密切相关，而Pb，Cu和Cr的浓度则受土地使用历史以及其他因素的影响。但是，砷的浓度与土地使用历史之间没有显着关系。

著录项

  • 来源
    《Chinese Geographical Science》 |2008年第3期|276-283|共8页
  • 作者

    Fuqiang Liao; Shenglu Zhou; Hongfu Zhang; Shaohua Wu; Qiguo Zhao;

  • 作者单位

    School of Geography and Ocean Science Nanjing University Nanjing 210093 China;

    School of Geography and Ocean Science Nanjing University Nanjing 210093 China;

    School of Geography and Ocean Science Nanjing University Nanjing 210093 China;

    School of Geography and Ocean Science Nanjing University Nanjing 210093 China;

    Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    coastal zone; agriculture land; heavy metal; land use history;

    机译：沿海地区;农业用地;重金属;土地使用历史;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号