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

机译：中国偏远山区大气沉降对生物监测痕量元素的污染

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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：这项研究的目的是更好地了解在全国范围内影响偏远山区微量元素分布的关键驱动因素。因此，在中国三十个偏远山区调查了苔藓中的八种微量元素（砷，镉，铬，铜，镍，铅，锑，锌）。通过多变量统计分析和铅同位素比值，确定了控制苔藓中微量元素分布的来源和可能因素。结果表明，苔藓中微量元素的浓度高于大多数欧洲国家的水平，但与中国城市的水平相当。苔藓中的Cd和Sb浓度最高，其他微量元素的浓度稍低。在空间上，中国东部，南部和西南部的苔藓对微量元素的污染显着高于其他地区。与采矿有关的活动，燃料燃烧和其他工业排放被确定为主要的人为来源的砷，镉，铅，锑和锌，而铬，铜和镍则主要来自自然资源。季风的降水明显改变了人为因素在苔藓中的分布。这项研究的结果表明，中国偏远山区的苔藓中的微量元素受区域人为排放的影响，应在大区域范围内突出季风为主的微量元素的运输和沉积。这些发现为未来的针对性政策提供了基准数据，以通过远程大气运输保护偏远的生态系统免受长期痕量元素的输入。

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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：痕量元素;苔藓监测;源识别;Pb同位素;大气沉积;山区;

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