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Dust-sized fractions from dustfall and physical weathering in the Gobi Desert

文献类型：期刊论文

作者Wang, Xunming2,3; Cai, Diwen3; Zhu, Bingqi3; Lou, Junpeng3; Li, Danfeng3; Zhang, Caixia4; Chen, Shuai5; Xu, Yanqiang5; Cai, Wenjun5; Su, Li5
刊名AEOLIAN RESEARCH
出版日期2020-04-01
卷号43页码:8
关键词Dust-sized fraction Physical weathering Gobi Desert Central Asia
ISSN号1875-9637
DOI10.1016/j.aeolia.2020.100565
通讯作者Wang, Xunming(xunming@igsnrr.ac.cn)
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.
WOS关键词CENTRAL NAMIB DESERT ; AIR-FLOW ; SOUTHERN MONGOLIA ; ALLUVIAL FANS ; WIND-TUNNEL ; PROVENANCE ; EVOLUTION ; SEDIMENTS ; SINGLE ; SIMULATION
资助项目National Natural Science Foundation of China[41930640] ; National Natural Science Foundation of China[41771012] ; National Key Research and Development Program of China[2016YFA0601900] ; Key Frontier Program of Chinese Academy of Sciences[QYZDJ-SSW-DQC043]
WOS研究方向Physical Geography
语种英语
WOS记录号WOS:000526121300005
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Frontier Program of Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/133971]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Xunming
作者单位1.Chinese Acad Meteorol Sci, Inst Atmospher Composit, State Key Lab Severe Weather LASW, Beijing 100081, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
5.Guaizi Lake Meteorol Stn, Alxa League 750306, Inner Mongolia, 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]. AEOLIAN RESEARCH,2020,43:8.
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,43,8.
MLA Wang, Xunming,et al."Dust-sized fractions from dustfall and physical weathering in the Gobi Desert".AEOLIAN RESEARCH 43(2020):8.

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来源：地理科学与资源研究所

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