| Monitoring atmospheric nitrogen pollution in Guiyang (SW China) by contrasting use of Cinnamomum Camphora leaves, branch bark and bark as biomonitors |
| Yu Xu; Huayun Xiao; Hui Guan; Chaojun Long
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| 2018
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发表期刊 | Environmental Pollution
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卷号 | 233页码:1037-1048 |
摘要 |
Moss (as a reference material) and camphor (Cinnamomum Camphora) leaf, branch bark and bark samples were systematically collected across an urban-rural gradient in Guiyang (SW China) to determine the efficacy of using these bio-indicators to evaluate nitrogen (N) pollution. The tissue N concentrations (0.13%-2.70%) and delta N-15 values (-7.5 parts per thousand to +9.3 parts per thousand) of all of these bio-indicators exhibited large spatial variations, as they recorded higher values in urban areas that quickly decreased with distance from the city center; moreover, both soil N concentrations and soil delta N-15 values were found no significant differences within each 6 km from the urban to the rural area. This not only suggests that the different N uptake strategies and variety of N responses of these bio-indicators can be reflected by their different susceptibilities to variations in N deposition but also reveals that they are able to indicate that urban N deposition is mostly from traffic and industry (NOx-N), whereas rural N deposition is mainly from agriculture (NHx-N). Compared to previously collected urban moss and camphor leaf samples, the significantly increased delta N-15 values in current urban moss and camphor leaf samples further indicate a greater contribution of NOx-N than NHx-N to urban N deposition. The feasibility of using the N concentrations and delta N-15 values of branch bark and bark as biomarkers of N deposition thus was further confirmed through the comparative use of these bio-indicators. It can be concluded that vascular plant leaves, branch bark and bark can be used as useful biomonitoring tools for evaluating atmospheric N pollution. For further study, quantitative criteria for the practical use of these bio-indicators in response to N deposition should be developed and the differences in the delta N-15 values of different plant parts should also be considered, particularly in urban environments that are severely disrupted by atmospheric pollution.
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关键词 | Leaves
branch Bark
bark
d15n
n Deposition
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收录类别 | SCI
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语种 | 英语
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文献类型 | 期刊论文
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条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/8659
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专题 | 环境地球化学国家重点实验室
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作者单位 | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, No. 99, Linchengxi Road, Guiyang 550081, China 2.University of Chinese Academy of Sciences, Beijing 100049, China
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推荐引用方式 GB/T 7714 |
Yu Xu;Huayun Xiao;Hui Guan;Chaojun Long. Monitoring atmospheric nitrogen pollution in Guiyang (SW China) by contrasting use of Cinnamomum Camphora leaves, branch bark and bark as biomonitors[J]. Environmental Pollution,2018,233:1037-1048.
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APA |
Yu Xu;Huayun Xiao;Hui Guan;Chaojun Long.(2018).Monitoring atmospheric nitrogen pollution in Guiyang (SW China) by contrasting use of Cinnamomum Camphora leaves, branch bark and bark as biomonitors.Environmental Pollution,233,1037-1048.
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MLA |
Yu Xu;Huayun Xiao;Hui Guan;Chaojun Long."Monitoring atmospheric nitrogen pollution in Guiyang (SW China) by contrasting use of Cinnamomum Camphora leaves, branch bark and bark as biomonitors".Environmental Pollution 233(2018):1037-1048.
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文件名:
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Monitoring atmospheric nitrogen pollution in Guiyang (SW China) by contrasting use of Cinnamomum Camphora leaves, branch bark and bark as biomonitors.pdf
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格式:
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Adobe PDF
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