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首页> 外文期刊>Journal of soils & sediments >Multivariate and geostatistical analyses of heavy metal pollution from different sources among farmlands in the Poyang Lake region, China
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Multivariate and geostatistical analyses of heavy metal pollution from different sources among farmlands in the Poyang Lake region, China

机译：鄱阳湖地区不同来源重金属污染的多元化与地统计分析

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摘要

Purpose Intensive urbanization and industrialization activities have caused the continuous discharge of heavy metals into the soils of China's Poyang Lake region, where they pose a major threat to human health. Yet, the spatial characteristics of these heavy metals in farmland soils and their pollution sources in this region remain unclear.Materials and methods We collected 115, 84, 26, and 987 farmland soil samples with heavy metal pollution from different sources (industrial and mining enterprises, sewage irrigation, urban, and general farming) in the Poyang Lake region, respectively.Results and discussion Descriptive statistics revealed that 1.1% of As, 7.3% of Cd, 0.3% of Pb, and 0.2% of Hg concentrations did surpass China's Soil Environmental Quality Management Standard (GB 15618-2018). In addition, 32.8% of As, 74.4% of Cd, 89.2% of Pb, 45.0% of Cr, and 13.7% of Hg concentrations of soil samples exceeded the background soil concentrations of heavy metals in this region, notably Cd and Pb, whose maximum values were respectively 11.64- and 21.47-fold the background values. Compared with general farming areas, the other three pollution sources had significantly higher concentrations of As, Cd, Pb, Cr, or Hg in their soils. The results of principal component (PC) and geostatistical analyses showed that PC strongly related to mainly As and Cr was mainly influenced by natural characteristics while PC closely related to mainly Cd, Pb, and Hg was driven by mainly human activities in farmland soils from the four sources.Conclusions Factor loadings for the different sources showed As and Cr on the same PCs, and Cd, Pb, and Hg on the other PCs, confirming the association of the heavy metal pollution with its sources.
机译：目的密集型城市化和工业化活动导致将重金属的连续排放到中国鄱阳湖地区的土壤中，在那里他们对人类健康构成了重大威胁。然而，农田土壤中这些重金属的空间特征及其在该地区的污染源仍然不明确。我们收集了115,84,26和987个农田土壤的材料和方法，具有不同来源的重金属污染（工业和采矿企业）分别在鄱阳湖地区的污水灌溉，城市和一般农业）。结果和讨论描述性统计显示，镉的1.1％，镉0.3％，0.3％，占HG浓度的0.2％确实超越了中国的土壤环境质量管理标准（GB 15618-2018）。此外，32.8％的CD，89.2％的Pb，45.0％的CR和13.7％的HG浓度的土壤样品超过了该区域的重金属的背景土壤浓度，特别是CD和Pb，其最大值分别为11.64-和21.47折叠背景值。与普通农业区相比，其他三种污染源在其土壤中具有显着较高的浓度，CD，Pb，Cr或Hg。主要成分（PC）和地统计分析的结果表明，PC主要与AS和CR强烈影响，主要受到自然特征的影响，而PC主要与CD，PB和HG密切相关，主要是来自农田土壤的人类活动的推动四个来源。不同来源的因子加载显示为AS和CR在另一台PC上的CD，PB和HG上，确认重金属污染与其来源的关联。

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  • 来源
    《Journal of soils & sediments》 |2019年第5期|2472-2484|共13页
  • 作者

    Jiang Yefeng; Guo Xi;

  • 作者单位

    Jiangxi Agr Univ Key Lab Poyang Lake Watershed Agr Resources & Eco Nanchang 330045 Jiangxi Peoples R China|Jiangxi Agr Univ Coll Land Resource & Environm Nanchang 330045 Jiangxi Peoples R China;

    Jiangxi Agr Univ Key Lab Poyang Lake Watershed Agr Resources & Eco Nanchang 330045 Jiangxi Peoples R China|Jiangxi Agr Univ Coll Land Resource & Environm Nanchang 330045 Jiangxi Peoples R China;

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

    Geostatistics; Heavy metal pollutant; Pollution source; Poyang Lake region;

    机译：地质学习;重金属污染物;污染源;鄱阳湖地区;

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