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首页> 外文期刊>Environmental Monitoring and Assessment >Soil heavy metal pollution source analysis based on the land use type in Fengdong District of Xi'an, China
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Soil heavy metal pollution source analysis based on the land use type in Fengdong District of Xi'an, China

机译：基于西安奉廊区土地利用型土壤重金属污染源分析

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摘要

The soil environment imposes a great influence on human health. Soil heavy metal pollution caused by human activities is an important part of environmental problems in urban areas. Due to an inadequate infrastructure, imperfect management, and intensive human activities, the sources of heavy metals in urban fringe areas are often more complicated than those in other areas, such as mining areas and agricultural irrigation areas. To solve this problem, the first step is to locate the source of pollution. However, the traditional methods of source analysis, such as principal component analysis and positive matrix factorization, always require correlations between elements. This study examined the Hg, Cd, Pb, and Cu contents in the Fengdong District of Xi'an, China, and found that these elements are not correlated in this area. Hence, traditional source analysis methods are not applicable in the study area. In response to this problem, this research proposed a new source analysis method based on Pearson's correlation analysis. The Nemerow index, geoaccumulation index, and ecological risk index were adopted to evaluate soil heavy metal pollution in the study area. Via comparison to the actual situation, it was concluded that the geoaccumulation index is more suitable for source analysis in this area. Through Pearson's correlation analysis, it was found that the geoaccumulation index is significantly correlated with the various land use types. Among them, transportation land exerted a greater impact on Pb pollution, and industrial land exerted a significant impact on the Hg distribution. The Cu distribution was related to construction land, while the Cd distribution was mainly related to urban land and cultivated land. In addition, the demolition of residential areas and abandoned farmlands imposed significant effects on Pb and Cd pollution, respectively.
机译：土壤环境对人类健康产生了巨大影响。人类活动引起的土壤重金属污染是城市环境问题的重要组成部分。由于基础设施不足，不完美的管理和密集的人类活动，城市边缘地区的重金属来源往往比其他领域更复杂，如采矿区和农业灌溉区域。为了解决这个问题，第一步是找到污染源。然而，传统的源分析方法，例如主成分分析和正矩阵分解，总是需要元素之间的相关性。本研究检测了中国西安奉廊区的HG，CD，PB和Cu内容，发现这些元素在这方面没有相关。因此，传统的源分析方法不适用于研究区域。在响应这个问题时，该研究提出了一种基于Pearson相关性分析的新源分析方法。采用Nemerow指数，地理分解指标和生态风险指数来评估研究区域的土壤重金属污染。通过与实际情况的比较，得出结论是，地质剖视指数更适合于该地区的源分析。通过Pearson的相关性分析，发现地质累积指数与各种土地使用显着相关。其中，运输土地对PB污染产生了更大的影响，工业用地对HG分布产生了重大影响。 Cu分布与建设用地有关，而CD分布主要与城市土地和耕地有关。此外，拆迁住宅区和废弃的农田分别对Pb和Cd污染造成了显着影响。

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  • 来源
    《Environmental Monitoring and Assessment》 |2021年第10期|643.1-643.14|共14页
  • 作者

    Hu Huijuan; Han Ling; Li Liangzhi; Wang Haiyang; Xu Tangqi;

  • 作者单位

    Changan Univ Sch Land Engn Xian 710054 Peoples R China|Changan Univ Shaanxi Key Lab Land Consolidat Xian 710054 Peoples R China;

    Changan Univ Shaanxi Key Lab Land Consolidat Xian 710054 Peoples R China|Changan Univ Sch Geol Engn & Surveying Engn Xian 710054 Peoples R China;

    Changan Univ Shaanxi Key Lab Land Consolidat Xian 710054 Peoples R China|Changan Univ Sch Geol Engn & Surveying Engn Xian 710054 Peoples R China;

    Changan Univ Shaanxi Key Lab Land Consolidat Xian 710054 Peoples R China;

    Changan Univ Sch Land Engn Xian 710054 Peoples R China|Changan Univ Shaanxi Key Lab Land Consolidat Xian 710054 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Soil heavy metals; Pollution assessment; Source analysis; Land use types; Urban fringe area;

    机译：土壤重金属;污染评估;源分析;土地使用类型;城市边缘区;

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