干旱区生态环境知识资源中心(Arid): Natural versus anthropogenic sources and seasonal variability of insoluble precipitation residues at Laohugou Glacier in northeastern Tibetan Plateau

Arid

DOI	10.1016/j.envpol.2020.114114
	Natural versus anthropogenic sources and seasonal variability of insoluble precipitation residues at Laohugou Glacier in northeastern Tibetan Plateau
	Wei, Ting 1,3; Kang, Shichang 1,2,3; Dong, Zhiwen 1,2,5; Qin, Xiang 1,5; Shao, Yaping 4; Rostami, Masoud 4
通讯作者	Dong, Zhiwen
来源期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
EISSN	1873-6424
出版年	2020
卷号	261
英文摘要	This study employs the grain size distributions and the concentrations and isotopic compositions of Sr, Nd, and Pb in the precipitation samples collected from the Laohugou Glacier (LHG) in northeastern Ti-betan Plateau (TP) during August 2014-2015 to investigate seasonal variability in the insoluble precipitation particle sources. Fine dust particle (0.57-27 mu m) depositions dominated in autumn and winter, whereas both fine and coarse dust particle (27-100 mu m) depositions were found in spring and summer. Furthermore, the concentrations of Sr, Nd, and Pb also varied seasonally-the highest and lowest Sr and Nd concentrations were recorded in spring and autumn, respectively, whereas the highest and lowest Pb concentrations were recorded in winter and summer, respectively. The Sr and Nd isotopes revealed that the dust in the winter precipitation originated predominately from the Taklimakan Desert and that in spring originated from the Badain Jaran and Qaidam deserts. The precipitation residues in summer were derived from a complex mixture of dust sources from the Gobi and other large deserts in northwest China. Autumn residues were predominately sourced from local soil near the LHG as well as from the Qaidam Basin and the northern TP surface soil. The Taklimakan, long suspected as a major source of long-range transported dust, was an insignificant contributor to the precipitation over LHG during spring, summer, and autumn. Further, the Pb isotopic ratios indicated a primary impact of anthropogenic pollutants for most part of the year (except spring). Meteorological data and the MODIS AOD model are in good agreement with the results from the analyses of the Sr, Nd, and Pb isotopes for the LHG particle source, and further clarify the source regions. Thus, this study thus provides new evidence on the seasonal variability of the sources of the residual particles in remote glaciers in Central Asia. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Sr-Nd-Pb isotopes Insoluble precipitation particles Seasonal sources Laohugou Glacier
类型	Article
语种	英语
国家	Peoples R China ; Germany
收录类别	SCI-E
WOS记录号	WOS:000531106500023
WOS关键词	SR ISOTOPIC COMPOSITION ; ATMOSPHERIC LEAD ; ORGANOCHLORINE PESTICIDES ; MOUNTAIN GLACIERS ; NORTHERN CHINA ; DUST STORMS ; ICE CORE ; ND ; PB ; PROVENANCE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319276
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China; 2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Univ Cologne, Inst Geophys & Meteorol, D-50923 Cologne, Germany; 5.Chinese Acad Sci, Qilian Mt Glacier & Ecol Environm Res Stn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Wei, Ting,Kang, Shichang,Dong, Zhiwen,et al. Natural versus anthropogenic sources and seasonal variability of insoluble precipitation residues at Laohugou Glacier in northeastern Tibetan Plateau[J],2020,261.
APA	Wei, Ting,Kang, Shichang,Dong, Zhiwen,Qin, Xiang,Shao, Yaping,&Rostami, Masoud.(2020).Natural versus anthropogenic sources and seasonal variability of insoluble precipitation residues at Laohugou Glacier in northeastern Tibetan Plateau.ENVIRONMENTAL POLLUTION,261.
MLA	Wei, Ting,et al."Natural versus anthropogenic sources and seasonal variability of insoluble precipitation residues at Laohugou Glacier in northeastern Tibetan Plateau".ENVIRONMENTAL POLLUTION 261(2020).