干旱区生态环境知识资源中心(Arid): Grain-size composition of the surface sediments in Chinese deserts and the associated dust emission

Arid

DOI	10.1016/j.catena.2022.106615
	Grain-size composition of the surface sediments in Chinese deserts and the associated dust emission
	Wei, Guoru; Zhang, Chunlai; Li, Qing; Wang, Rende; Wang, Hongtao; Zhang, Yajing; Yuan, Yixiao; Li, Wenping
通讯作者	Zhang, CL
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	219
英文摘要	Chinese deserts are one of the essential source areas for global dust emission, and the intensity of dust emissions varies significantly depending on the grain-size composition of sediments, wind force, and vegetation coverage. To obtain complete and accurate information on the grain-size compositions of the surface sediments in these deserts and to assess the contribution of Chinese deserts to Asian dust emission, we systematically collected surface sediments from 12 deserts in northern China, and analyzed their grain-size composition. We also calculated dust emissions from 2010 to 2019 based on the sand transport rate and clay content. The mean grainsize of surface sediments was 2.34 phi, and the clay and silt contents were only 0.6 and 6.7%, respectively. The Taklimakan Desert had the finest surface sediment, with a mean grain-size of 2.75 phi, whereas the Kumtag Desert had the coarsest sediment, with a mean grain-size of 2.00 phi. The total annual dust emission of the Chinese deserts from 2010 to 2019 was 70.6 Tg y-1. The Taklimakan Desert in the western region, the Badain Jaran Desert and the adjacent Tengger and Ulan Buh deserts in the central region, and the Otindag Sandy Land in the eastern region were the greatest contributors to dust emission. These core areas of dust emission are also the regions with the highest dust storm frequency, indicating that the deserts are significant regions for dust storms in northern China and an important surface type for dust emission in China. We found a significant positive correlation between dust emission and dust storm frequency.
英文关键词	Chinese deserts Grain -size Dust emission Dust storm
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000860223400006
WOS关键词	NORTHERN CHINA ; TRANSPORT ; SAND ; CLIMATE ; DESERTIFICATION ; GEOMORPHOLOGY ; ENVIRONMENTS ; REGIONS ; LANDS ; AREA
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392117
推荐引用方式 GB/T 7714	Wei, Guoru,Zhang, Chunlai,Li, Qing,et al. Grain-size composition of the surface sediments in Chinese deserts and the associated dust emission[J],2022,219.
APA	Wei, Guoru.,Zhang, Chunlai.,Li, Qing.,Wang, Rende.,Wang, Hongtao.,...&Li, Wenping.(2022).Grain-size composition of the surface sediments in Chinese deserts and the associated dust emission.CATENA,219.
MLA	Wei, Guoru,et al."Grain-size composition of the surface sediments in Chinese deserts and the associated dust emission".CATENA 219(2022).