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DOI	10.1016/j.catena.2021.105530
	Gobi deposits play a significant role as sand sources for dunes in the Badain Jaran Desert, Northwest China
	Zhang, Zhengcai; Liang, Aimin; Zhang, Caixia; Dong, Zhibao
通讯作者	Zhang, ZC ; Liang, AM (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 260 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	0341-8162
EISSN	1872-6887
卷号	206
英文摘要	The Badain Jaran Desert has the world's tallest dunes, but the sand sources for these dunes are unclear. Previous research suggested that the Qilian Mountains and Altai Mountains are the main sand sources, with sand transport primarily by hydrological processes. However, there is a large area of Gobi (i.e., desert pavement formed on the alluvial fans) surfaces upwind of the desert, and we hypothesized that the Gobi surface might also be a sand source. Sand geochemical characteristics can be used to identify sediment sources. To test our hypothesis, we collected 26 samples from the Gobi surface, 22 samples from sand dunes on the Gobi surface, 2 samples from dry lacustrine deposits, and 7 samples from the Heihe River's banks. We then analyzed their geochemical characteristics and used principal-components analysis to quantify the similarity between sand source and deposition areas. We found that the Rb/Sr, Ba/Sr, Y/Zr, Rb/Zr, K/Ba, and K/Rb ratios can be used to identify the sand provenance. Based on these ratios, the geochemical characteristics for all samples were generally similar between the Gobi surface and the Badain Jaran Desert, suggesting that the Gobi surface was an important source of sand for the desert's dunes, and can provide about 69% of the sediment for the Badain Jaran Desert. Sand was also transported by drainage from the Gobi surface into the Heihe River, where river bank deposits became an additional source of sand. Thus, both wind and hydrodynamic forces controlled the sand transport.
关键词	GRAIN-SIZE CHARACTERISTICS QAIDAM BASIN AEOLIAN DEPOSITS DUST EMISSIONS PROVENANCE SEDIMENT SEA GEOMORPHOLOGY PLATEAU WESTERN
英文关键词	Dune; Geochemical characteristics; Gobi deposit; Provenance; Badain Jaran Desert
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000688449100039
来源期刊	CATENA
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/253647
作者单位	[Zhang, Zhengcai; Zhang, Caixia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Liang, Aimin; Dong, Zhibao] Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhengcai,Liang, Aimin,Zhang, Caixia,et al. Gobi deposits play a significant role as sand sources for dunes in the Badain Jaran Desert, Northwest China[J]. 中国科学院西北生态环境资源研究院,2021,206.
APA	Zhang, Zhengcai,Liang, Aimin,Zhang, Caixia,&Dong, Zhibao.(2021).Gobi deposits play a significant role as sand sources for dunes in the Badain Jaran Desert, Northwest China.CATENA,206.
MLA	Zhang, Zhengcai,et al."Gobi deposits play a significant role as sand sources for dunes in the Badain Jaran Desert, Northwest China".CATENA 206(2021).