气候变化领域集成服务门户(CCPortal): Dust sources in and and semiarid China and southern Mongolia: Impacts of geomorphological setting and surface materials

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DOI	10.1016/j.geomorph.2007.09.006
	Dust sources in and and semiarid China and southern Mongolia: Impacts of geomorphological setting and surface materials
	Wang, Xunming; Xia, Dunsheng; Wang, Tao; Xue, Xian; Li, Jinchang
发表日期	2008
ISSN	0169-555X
卷号	97 期号:2019-03-04
英文摘要	Analysis of the geomorphological settings and surface materials in and and semiarid China and southern Mongolia revealed that the dominant dust sources are 'Gobi' deserts and alluvial fans adjacent to Gobi deserts in the piedmonts of the Kunlun, Qilian, Helan, and Gobi Altai mountains. These areas have persistent supplies of dust-sized particles, deposited by intermittent floods from the mountains, and fine materials are also generated by weathering and aeolian processes acting on the coarse fractions of Gobi surfaces. Clear spatial differences in mineral types and contents and in the salt contents of surface materials also strongly affected the intensity of dust emissions. Inconsistencies in monitoring, simulation, and calculation of dust emissions in previous studies of Northern China and Mongolia may have been caused by insufficiently detailed considerations of variations in the geomorphological setting. Where the geomorphological settings in these areas are not considered in sufficient detail, deviations arise in the estimation and prediction of dust using current models. Although the present study did not quantify the persistence and replenishment of dust sources in the study area, our conclusions about the importance of geomorphology can improve future studies of dust sources and controlling factors, improve assessments of the effects of climate change on dust emissions, and facilitate the interpretation of paleoclimate records. (C) 2007 Elsevier B.V. All rights reserved.
关键词	dust source geomorphological setting surface materials China Mongolia Gobi desert
学科领域	Physical Geography; Geology
语种	英语
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
来源期刊	GEOMORPHOLOGY
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/111523
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xunming,Xia, Dunsheng,Wang, Tao,et al. Dust sources in and and semiarid China and southern Mongolia: Impacts of geomorphological setting and surface materials[J]. 中国科学院西北生态环境资源研究院,2008,97(2019-03-04).
APA	Wang, Xunming,Xia, Dunsheng,Wang, Tao,Xue, Xian,&Li, Jinchang.(2008).Dust sources in and and semiarid China and southern Mongolia: Impacts of geomorphological setting and surface materials.GEOMORPHOLOGY,97(2019-03-04).
MLA	Wang, Xunming,et al."Dust sources in and and semiarid China and southern Mongolia: Impacts of geomorphological setting and surface materials".GEOMORPHOLOGY 97.2019-03-04(2008).