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	Quantifying atmospheric nitrogen deposition through a nationwide monitoring network across China
	Xu W.; Luo, X. S.; Pan, Y. P.; Zhang, L.; Tang, A. H.; Shen, J. L.; Zhang, Y.; Li, K. H.; Wu, Q. H.; Yang, D. W.
	2015
关键词	dry deposition wet deposition air-pollution united-states reactive nitrogen beijing olympics north china chemistry ammonia models
英文摘要	A Nationwide Nitrogen Deposition Monitoring Network (NNDMN) containing 43 monitoring sites was established in China to measure gaseous NH3, NO2, and HNO3 and particulate NH4+ and NO3- in air and/or precipitation from 2010 to 2014. Wet/bulk deposition fluxes of N-r species were collected by precipitation gauge method and measured by continuous-flow analyzer; dry deposition fluxes were estimated using airborne concentration measurements and inferential models. Our observations reveal large spatial variations of atmospheric N-r concentrations and dry and wet/bulk N-r deposition. On a national basis, the annual average concentrations (1.3-47.0 mu g N m(-3)) and dry plus wet/bulk deposition fluxes (2.9-83.3 kg N ha(-1) yr(-1)) of inorganic Nr species are ranked by land use as urban > rural > background sites and by regions as north China > southeast China > southwest China > northeast China > northwest China > Tibetan Plateau, reflecting the impact of anthropogenic N-r emission. Average dry and wet/bulk N deposition fluxes were 20.6 +/- 11.2 (mean +/- standard deviation) and 19.3 +/- 9.2 kg N ha(-1) yr(-1) across China, with reduced N deposition dominating both dry and wet/bulk deposition. Our results suggest atmospheric dry N deposition is equally important to wet/bulk N deposition at the national scale. Therefore, both deposition forms should be included when considering the impacts of N deposition on environment and ecosystem health.
出处	Atmospheric Chemistry and Physics
卷	15
期	21
页	12345-12360
语种	英语
ISSN号	1680-7316
DOI标识	10.5194/acp-15-12345-2015
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/43584]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Xu W.,Luo, X. S.,Pan, Y. P.,et al. Quantifying atmospheric nitrogen deposition through a nationwide monitoring network across China. 2015.

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