气候变化领域集成服务门户(CCPortal): Nitrogen Speciation and Isotopic Composition of Aerosols Collected at Himalayan Forest (3326 m a.s.l.): Seasonality, Sources, and Implications

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DOI	10.1021/acs.est.9b03999
	Nitrogen Speciation and Isotopic Composition of Aerosols Collected at Himalayan Forest (3326 m a.s.l.): Seasonality, Sources, and Implications
	Bhattarai, Hemraj; Zhang, Yan-Lin; Pavuluri, Chandra Mouli; Wan, Xin; Wu, Guangming; Li, Peilin; Cao, Fang; Zhang, Wenqi; Wang, Yongjie; Kang, Shichang; Ram, Kirpa; Kawamura, Kimitaka; Ji, Zhenming; Widory, David; Cong, Zhiyuan
通讯作者	Cong, ZY (通讯作者)
发表日期	2019
ISSN	0013-936X
EISSN	1520-5851
起始页码	12247
结束页码	12256
卷号	53 期号:21
英文摘要	Nitrogenous aerosols are ubiquitous in the environment and thus play a vital role in the nutrient balance as well as the Earth's climate system. However, their abundance, sources, and deposition are poorly understood, particularly in the fragile and ecosensitive Himalayan and Tibetan Plateau (HTP) region. Here, we report concentrations of nitrogen species and isotopic composition (delta N-15) in aerosol samples collected from a forest site in the HTP (i.e., Southeast Tibet). Our results revealed that both organic and inorganic nitrogen contribute almost equally with high abundance of ammonium nitrogen (NH4+-N) and water-insoluble organic nitrogen (WION), contributing similar to 40% each to aerosol total nitrogen (TN). The concentrations and delta N-15 exhibit a significant seasonality with similar to 2 times higher in winter than in summer with no significant diurnal variations for any species. Moreover, winter aerosols mainly originated from biomass burning emissions from North India and East Pakistan and reached the HTP through a long-range atmospheric transport. The TN dry deposition and total deposition fluxes were 2.04 kg ha(-1) yr(-1) and 6.12 kg ha(-1) yr(-1) respectively. Our results demonstrate that the air contamination from South Asia reach the HTP yand is most likely impacting the high altitude ecosystems in an accepted scenario of increasing emissions over South Asia.
关键词	SOLUBLE DICARBOXYLIC-ACIDS BIOMASS-BURNING EMISSIONS STABLE CARBON ORGANIC NITROGEN MAJOR IONS MARINE AEROSOLS TIBETAN PLATEAU FINE AEROSOLS DEPOSITION WATER
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000495467500012
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259646
推荐引用方式 GB/T 7714	Bhattarai, Hemraj,Zhang, Yan-Lin,Pavuluri, Chandra Mouli,et al. Nitrogen Speciation and Isotopic Composition of Aerosols Collected at Himalayan Forest (3326 m a.s.l.): Seasonality, Sources, and Implications[J]. 中国科学院青藏高原研究所,2019,53(21).
APA	Bhattarai, Hemraj.,Zhang, Yan-Lin.,Pavuluri, Chandra Mouli.,Wan, Xin.,Wu, Guangming.,...&Cong, Zhiyuan.(2019).Nitrogen Speciation and Isotopic Composition of Aerosols Collected at Himalayan Forest (3326 m a.s.l.): Seasonality, Sources, and Implications.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(21).
MLA	Bhattarai, Hemraj,et al."Nitrogen Speciation and Isotopic Composition of Aerosols Collected at Himalayan Forest (3326 m a.s.l.): Seasonality, Sources, and Implications".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.21(2019).