干旱区生态环境知识资源中心(Arid): Dust-sized fractions from dustfall and physical weathering in the Gobi Desert

Arid

DOI	10.1016/j.aeolia.2020.100565
	Dust-sized fractions from dustfall and physical weathering in the Gobi Desert
	Wang, Xunming 1,2; Cai, Diwen 1; Zhu, Bingqi 1; Lou, Junpeng 1; Li, Danfeng 1; Zhang, Caixia 3; Chen, Shuai 4; Xu, Yanqiang 4; Cai, Wenjun 4; Su, Li 4; Che, Huizheng 5
通讯作者	Wang, Xunming
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2020
卷号	43
英文摘要	Changes in the sediment availability in the Gobi Desert are not well estimated under current climate and environmental conditions. Additionally, the contributions of dustfall and dust-sized fractions produced by physical weathering in the Gobi Desert and their significance on gobi surface equilibrium are still poorly understood. The objective of this study is to quantify the amounts of dust-sized fractions deposited via dustfall and produced by physical weathering in the Gobi Desert and to evaluate the roles of these two processes in maintaining the gobi surface equilibrium. Physical weathering experiments and dustfall collections are conducted from 20th October 2017 to 20th October 2018 in the Ala Shan Gobi, a representative area of the Gobi Desert in Central Asia. The experimental results showed that dustfall on Gobi Desert is 1093 g m(-2) , simultaneously 944 g m(-2) of the dust-sized fractions ( < 63 mu m in diameter) are deposited, and at least 149 g m(-2) of dust-sized fractions are re-emitted from the gobi surfaces. Without considering other dynamics, the results show that the Gobi Desert is both a potential dust source area and a typical source-to-sink region, with deposition rate being greater than the erosion rate. Under current climate and environmental conditions, without fine particles replenished by fluvial processes, the dust deposition and dust-sized fractions, produced by physical weathering, may be the key dynamics affecting Gobi Desert surface equilibrium.
英文关键词	Dust-sized fraction Physical weathering Gobi Desert Central Asia
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000526121300005
WOS关键词	CENTRAL NAMIB DESERT ; AIR-FLOW ; SOUTHERN MONGOLIA ; ALLUVIAL FANS ; WIND-TUNNEL ; PROVENANCE ; EVOLUTION ; SEDIMENTS ; SINGLE ; SIMULATION
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院西北生态环境资源研究院 ; 中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313903
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China; 4.Guaizi Lake Meteorol Stn, Alxa League 750306, Inner Mongolia, Peoples R China; 5.Chinese Acad Meteorol Sci, Inst Atmospher Composit, State Key Lab Severe Weather LASW, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xunming,Cai, Diwen,Zhu, Bingqi,et al. Dust-sized fractions from dustfall and physical weathering in the Gobi Desert[J]. 中国科学院西北生态环境资源研究院, 中国科学院地理科学与资源研究所,2020,43.
APA	Wang, Xunming.,Cai, Diwen.,Zhu, Bingqi.,Lou, Junpeng.,Li, Danfeng.,...&Che, Huizheng.(2020).Dust-sized fractions from dustfall and physical weathering in the Gobi Desert.AEOLIAN RESEARCH,43.
MLA	Wang, Xunming,et al."Dust-sized fractions from dustfall and physical weathering in the Gobi Desert".AEOLIAN RESEARCH 43(2020).