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Biomonitoring trace element contamination impacted by atmospheric deposition in China's remote mountains

机译：中国偏远山脉大气沉积影响的生物监测痕量元素污染

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摘要

The purpose of this study is to better understand the key driving factors affecting the distribution of trace elements in remote mountainous areas at a national scale. In this regard, eight trace elements (As, Cd, Cr, Cu, Ni, Pb, Sb, Zn) in mosses were investigated at thirty remote mountains across China. The sources and possible factors controlling the distribution of trace elements in the mosses were identified through multivariate statistical analysis and Pb isotopic ratios. The results showed that the concentrations of trace elements in the mosses were higher than the levels in most European countries but comparable to those in Chinese cities. Mosses had the highest concentration levels of Cd and Sb and slightly lower levels of other trace elements. Spatially, moss contamination with the trace elements was significantly higher in the eastern, southern and southwestern China than in other regions. Mining-related activities, fuel combustion and other industrial emissions were identified as the main anthropogenic sources of As, Cd, Pb, Sb and Zn, whereas Cr, Cu and Ni were mainly from natural sources. The precipitation from monsoons clearly altered the distribution of anthropogenic elements in the mosses. The results of this study indicate that the trace elements in the mosses of China's remote mountains were affected by regional anthropogenic emissions, and the monsoon-dominated trace element transport and deposition should be highlighted at a large regional scale. These findings provide baseline data for future targeting policies to protect remote ecosystems from long-term inputs of trace elements via long-range atmospheric transportation.
机译：本研究的目的是更好地了解影响偏远山区在全国范围内的微量元素分布的关键驱动因素。在这方面，在中国的三十个偏远山脉中调查了苔藓中的八种微量元素（如CD，Cr，Cu，Ni，Pb，Sb，Zn）。通过多元统计分析和Pb同位素比来确定控制苔藓中微量元素分布的来源和可能因素。结果表明，苔园中微量元素的浓度高于大多数欧洲国家的水平，但与中国城市中的水平相当。苔藓具有最高浓度的Cd和Sb，其他微量元素的水平略低。在空间上，在中国东部，南部和西南部的苔藓污染明显高于其他地区。采矿相关的活动，燃料燃烧和其他工业排放被鉴定为AS，CD，Pb，Sb和Zn的主要人为来源，而Cr，Cu和Ni主要来自天然来源。来自季风的沉淀​​显然改变了苔藓中的人为元素的分布。本研究的结果表明，中国偏远山脉苔藓中的微量元素受到区域人为排放的影响，应以大型区域规模强调季风主导的微量元素运输和沉积。这些调查结果为未来的目标政策提供基线数据，以通过远程大气运输来保护远程生态系统免受微量元素的长期输入。

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  • 来源
    《Atmospheric research》 |2019年第8期|30-41|共12页
  • 作者

    Bing Haijian; Wu Yanhong; Li Jun; Xiang Zhongxiang; Luo Xiaosan; Zhou Jun; Sun Hongyang; Zhang Gan;

  • 作者单位

    Chinese Acad Sci Key Lab Mt Surface Proc & Ecol Regulat Inst Mt Hazards & Environm Chengdu 610041 Sichuan Peoples R China;

    Chinese Acad Sci Key Lab Mt Surface Proc & Ecol Regulat Inst Mt Hazards & Environm Chengdu 610041 Sichuan Peoples R China;

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Guangdong Peoples R China;

    Chinese Acad Sci Key Lab Mt Surface Proc & Ecol Regulat Inst Mt Hazards & Environm Chengdu 610041 Sichuan Peoples R China;

    Nanjing Univ Informat Sci & Technol Int Ctr Ecol Meteorol & Environm Sch Appl Meteorol Nanjing 210044 Jiangsu Peoples R China;

    Chinese Acad Sci Key Lab Mt Surface Proc & Ecol Regulat Inst Mt Hazards & Environm Chengdu 610041 Sichuan Peoples R China;

    Chinese Acad Sci Key Lab Mt Surface Proc & Ecol Regulat Inst Mt Hazards & Environm Chengdu 610041 Sichuan Peoples R China;

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Guangdong Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Trace elements; Moss monitoring; Source identification; Pb isotopes; Atmospheric deposition; Mountain regions;

    机译：微量元素;苔藓监测;源鉴定;Pb同位素;大气沉积;山区;

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