干旱区生态环境知识资源中心(Arid): Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China

Arid

DOI	10.1016/j.atmosenv.2020.117564
	Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China
	Xia, Dunsheng; Wang, Youjun; Jia, Jia; Wei, Haitao; Fan, Yijiao; Jin, Ming; Chen, Fahu
通讯作者	Xia, DS
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2020
卷号	232
英文摘要	The arid basins in NW China are one of the most important sources of Asian atmospheric dust. Numerous studies have been conducted of dust flux and its physical and chemical characteristics in terrestrial and marine sediments in East Asia. However, knowledge of the exact sources of the emitted dust is comparatively limited. In this study, we investigated the magnetic characteristics of 541 surface samples collected in NW China. Based on the application of cluster analysis, we propose that the silt in arid basins is sourced from the surrounding high mountains, and that rivers play an important role in transporting the material, whereas sand dunes are only a relatively limited store of silt. Comparison of the results with the magnetic characteristics of loess samples from the Chinese Loess Plateau (CLP) indicates that the slopes of the Kunlun-Alkin-Qilian Mountains System and the surrounding fluvial plains are the major sources of silty dust in NW China, and that the contribution of sediment from sand dunes has been overestimated. In addition, our results indicate that magnetic fingerprinting can be used to trace the pathway of dust transport, and that the loess deposits in central Asia and the CLP are more accurately described as 'mountain loess' rather than 'desert loess'.
英文关键词	Dust emission Sediment provenance Magnetic fingerprinting Northwest China
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000539152100015
WOS关键词	TIBETAN PLATEAU ; DRILL CORE ; PALEOSOL ; PROVENANCE ; RECORDS ; SIZE ; ND ; GEOCHEMISTRY ; FRACTIONS ; EVOLUTION
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	兰州大学 ; 中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324703
作者单位	[Xia, Dunsheng; Wei, Haitao; Fan, Yijiao; Jin, Ming; Chen, Fahu] Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Wang, Youjun] Zaozhuang Univ, Coll Tourism & Resource Environm, Zaozhuang 277100, Peoples R China; [Jia, Jia] Zhejiang Normal Univ, Coll Geog & Environm Sci, Hangzhou 321004, Zhejiang, Peoples R China; [Chen, Fahu] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Xia, Dunsheng,Wang, Youjun,Jia, Jia,et al. Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China[J]. 兰州大学, 中国科学院青藏高原研究所,2020,232.
APA	Xia, Dunsheng.,Wang, Youjun.,Jia, Jia.,Wei, Haitao.,Fan, Yijiao.,...&Chen, Fahu.(2020).Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China.ATMOSPHERIC ENVIRONMENT,232.
MLA	Xia, Dunsheng,et al."Mountain loess or desert loess? New insight of the sources of Asian atmospheric dust based on mineral magnetic characterization of surface sediments in NW China".ATMOSPHERIC ENVIRONMENT 232(2020).