气候变化领域集成服务门户(CCPortal): Wet precipitation chemistry at a high-altitude site (3,326 m a.s.l.) in the southeastern Tibetan Plateau

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DOI	10.1007/s11356-012-1379-x
	Wet precipitation chemistry at a high-altitude site (3,326 m a.s.l.) in the southeastern Tibetan Plateau
	Liu, Bin; Kang, Shichang; Sun, Jimin; Zhang, Yulan; Xu, Ri; Wang, Yongjie; Liu, Yongwen; Cong, Zhiyuan
发表日期	2013
ISSN	0944-1344
EISSN	1614-7499
卷号	20 期号:7
英文摘要	This paper presents the results of wet precipitation chemistry from September 2009 to August 2010 at a high-altitude forest site in the southeastern Tibetan Plateau (TP). The alkaline wet precipitation, with pH ranging from 6.25 to 9.27, was attributed to the neutralization of dust in the atmosphere. Wet deposition levels of major ions and trace elements were generally comparable with other alpine and remote sites around the world. However, the apparently greater contents/fluxes of trace elements (V, Co, Ni, Cu, Zn, and Cd), compared to those in central and southern TP and pristine sites of the world, reflected potential anthropogenic disturbances. The almost equal mole concentrations and perfect linear relationships of Na+ and Cl- suggested significant sea-salts sources, and was confirmed by calculating diverse sources. Crust mineral dust was responsible for a minor fraction of the chemical components (less than 15 %) except Al and Fe, while most species (without Na+, Cl-, Mg2+, Al, and Fe) arose mainly from anthropogenic activities. High values of as-K+ (anthropogenic sources potassium), as-SO4 (2-), and as-NO3 (-) observed in winter and spring demonstrated the great effects of biomass burning and fossil fuel combustion in these seasons, which coincided with haze layer outburst in South Asia. Atmospheric circulation exerted significant influences on the chemical components in wet deposition. Marine air masses mainly originating from the Bay of Bengal provided a large number of sea salts to the chemical composition, while trace elements during summer monsoon seasons were greatly affected by industrial emissions from South Asia. The flux of wet deposition was 1.12 kg N ha(-1) year(-1) for NH4 (+)-N and 0.29 kg N ha(-1) year(-1) for NO3 (-)-N. The total atmospheric deposition of N was estimated to be 6.41 kg N ha(-1) year(-1), implying potential impacts on the alpine ecosystem in this region.
关键词	Wet precipitation chemistry Major ions Trace elements Atmospheric N deposition Southeastern Tibetan Plateau
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111682
作者单位	Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Bin,Kang, Shichang,Sun, Jimin,et al. Wet precipitation chemistry at a high-altitude site (3,326 m a.s.l.) in the southeastern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2013,20(7).
APA	Liu, Bin.,Kang, Shichang.,Sun, Jimin.,Zhang, Yulan.,Xu, Ri.,...&Cong, Zhiyuan.(2013).Wet precipitation chemistry at a high-altitude site (3,326 m a.s.l.) in the southeastern Tibetan Plateau.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,20(7).
MLA	Liu, Bin,et al."Wet precipitation chemistry at a high-altitude site (3,326 m a.s.l.) in the southeastern Tibetan Plateau".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 20.7(2013).