• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Heavy metal accumulation and its spatial distribution in agricultural soils: evidence from Hunan province, China
【24h】

Heavy metal accumulation and its spatial distribution in agricultural soils: evidence from Hunan province, China

机译：农业土壤中的重金属积累及其空间分布：中国湖南省证据

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

The issue of heavy metal pollution in Hunan province, China, has attracted substantial attention. Current studies of heavy metal soil pollution in Hunan province mainly focus on medium and small scales, thus heavy metal pollution is rarely considered at the province scale in Hunan. In order to investigate the heavy metal pollution status in agricultural soils in Hunan province, literature related to heavy metal soil pollution in Hunan province was reviewed and organized from the following databases: Web of Science, China national knowledge infrastructure (CNKI), Wanfang Data, and China Science and Technology Journal Database (CQVIP). The literature data for the contents of Pb (122 soil sampling sites), Zn (103 sites), Cu (102 sites), Cd (105 sites), As (100 sites), Hg (85 sites), Cr (95 sites), and Ni (62 sites) in agricultural soils were obtained at the province scale. The spatial auto-correlation method was applied to reveal the spatial distribution of heavy metal accumulation. The average contents of the 8 heavy metals in agricultural soils of Hunan were all significantly (P < 0.05) higher than their background values and they were not distributed evenly across the Hunan province; the content of each heavy metal in eastern Hunan (including the cities of Yueyang, Changsha, Zhuzhou, and Chenzhou) was higher than that of other regions. The exceeding standard rate (the ratio of surveyed content to the background value) for Cu, Cd, As, and Hg had strongly positive spatial correlation, whereas Zn and Ni presented a negative spatial correlation. Overall, the higher exceeding standard rates of the 8 heavy metals were mainly distributed in the highly industrialized cities such as Changsha, Zhuzhou, Xiangtan, Chenzhou, and Hengyang, thus more attention should be paid to such areas to manage soil pollution.
机译：中国湖南省重金属污染问题引起了大量关注。湖南省重金属土壤污染的目前主要关注中小鳞片，因此湖南省省级较少考虑重金属污染。为了调查湖南省农业土壤的重金属污染状况，湖南省重金属土壤污染有关的文献，并从以下数据库中审查，组织：科学网，中国国家知识基础设施（CNKI），万旺数据，和中国科技期刊数据库（CQVIP）。 PB（122个土壤采样点），Zn（103位点），Cu（102位点），Cd（105位点），As（100位点），Hg（85位点），Cr（95位点）的文献数据在省级获得农业土壤中的NI（62位点）。施加空间自相关方法揭示重金属积累的空间分布。在湖南的农业土壤的8种金属的平均含量均显著（P <0.05）比它们的背景值较高，它们不穿过湖南均匀分布;湖南东部（包括岳阳，长沙，株洲和郴州市）的每种重金属的含量高于其他地区。 Zn和Ni呈现负空间相关性，超过标准率（调查内容与背景值的比率）具有强烈的空间相关性，而Zn和Ni呈现负空间相关性。总体而言，超过8个重金属的标准率越高主要分布在长沙，株洲，湘潭，郴州和衡阳等高度工业化城市中，因此应对这些领域进行更多的关注来管理土壤污染。

著录项

  • 来源
    《RSC Advances》 |2018年第19期|共8页
  • 作者

    Li Xuezhen; Zhao Zhongqiu; Yuan Ye; Wang Xiang; Li Xueyan;

  • 作者单位

    China Univ Geosci Coll Land Sci &

    Technol 29 Xueyuan Rd Beijing 100083 Peoples R China;

    China Univ Geosci Coll Land Sci &

    Technol 29 Xueyuan Rd Beijing 100083 Peoples R China;

    China Univ Geosci Coll Land Sci &

    Technol 29 Xueyuan Rd Beijing 100083 Peoples R China;

    China Univ Geosci Coll Land Sci &

    Technol 29 Xueyuan Rd Beijing 100083 Peoples R China;

    China Univ Geosci Coll Land Sci &

    Technol 29 Xueyuan Rd Beijing 100083 Peoples R China;

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

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