QQ客服 官方微博 反馈留言

	The significance of Gobi desert surfaces for dust emissions in China: an experimental study
	Wang, Xunming1,2; Zhang, Caixia2; Wang, Hongtao2; Qian, Guangqiang2; Luo, Wanyin2; Lu, Junfeng2; Wang, Li2
刊名	ENVIRONMENTAL EARTH SCIENCES
	2011-10-01
卷号	64期号:4页码:1039-1050
关键词	Production of dust-sized particles Aeolian abrasion Gobi desert Wind-tunnel experiment China
ISSN号	1866-6280
DOI	10.1007/s12665-011-0922-2
通讯作者	Wang, Xunming(xunming@lzb.ac.cn)
英文摘要	A series of experiments to determine the direct emission of dust-sized particles from Gobi surfaces by clean wind (wind without sand), and the potential for aeolian abrasion of Gobi surfaces and beds of gravel and mobile sand to produce fine (<100 mu m) and dust-sized (<10 mu m, PM10) particles under sand-laden winds were conducted. Parent material was obtained from Gobi areas of the Ala Shan Plateau, the region with high dust emissions in arid China. The fine particles produced by aeolian processes were collected using sand traps and sieved the captured materials to exclude particles >100 mu m in diameter and then PM10 by sedimentation was acquired. The Gobi surface provided most of the emitted fine particles during the initial dust emission processes, but subsequently, release of the clay coatings of particles by abrasion becomes the dominant source of fine materials. Under sand-laden winds, PM10 production rates produced by aeolian abrasion of Gobi surfaces ranged between 0.002 and 0.244% of blown materials. After removal of sand, silt, or clay with low resistance to erosion from the Gobi surfaces by the wind, the PM10 production rates caused by aeolian abrasion were similar to those from gravel and sand beds. The results also indicated that after the dust-sized particles with low resistance to erosion were removed, the production of dust-sized particles was unrelated to wind velocity. Under aeolian processes, Gobi deserts in this region therefore play a major role in dust emissions from arid and semiarid China.
收录类别	SCI
WOS关键词	ATMOSPHERIC MINERAL DUST ; NATURAL DUNE SANDS ; SIZED QUARTZ SILT ; ASIAN DUST ; WIND-TUNNEL ; LABORATORY SIMULATIONS ; CHEMICAL-COMPOSITION ; AEOLIAN ABRASION ; NORTHERN CHINA ; SOIL DUST
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000295845600012
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556584
专题	寒区旱区环境与工程研究所
通讯作者	Wang, Xunming
作者单位	1.Beijing Normal Univ, Coll Resources Sci & Technol, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Key Lab Desert & Desertificat, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xunming,Zhang, Caixia,Wang, Hongtao,et al. The significance of Gobi desert surfaces for dust emissions in China: an experimental study[J]. ENVIRONMENTAL EARTH SCIENCES,2011,64(4):1039-1050.
APA	Wang, Xunming.,Zhang, Caixia.,Wang, Hongtao.,Qian, Guangqiang.,Luo, Wanyin.,...&Wang, Li.(2011).The significance of Gobi desert surfaces for dust emissions in China: an experimental study.ENVIRONMENTAL EARTH SCIENCES,64(4),1039-1050.
MLA	Wang, Xunming,et al."The significance of Gobi desert surfaces for dust emissions in China: an experimental study".ENVIRONMENTAL EARTH SCIENCES 64.4(2011):1039-1050.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。