干旱区生态环境知识资源中心(Arid): Deflation rates of different clastic sediments in the arid regions of China

Arid

DOI	10.1007/s11442-006-0414-6
	Deflation rates of different clastic sediments in the arid regions of China
	Song Yang; Liu Lianyou; Li Xiaoyan; Wang Jianhua; Luo Wangquan; Liu Yuzhang
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2006
卷号	16 期号:4 页码:495-501
英文摘要	By wind tunnel experiment, we studied the deflation rates of 8 different clastic sediments in the arid regions of China, discussed the sources of aeolian sand and their influence on the development of sand dunes and formation of sand deserts from the view of dynamics of wind erosion. The average deflation rates of 8 typical clastic sediments in the arid regions of China can be arranged in the order of lacustrine sand > alluvial sand > weathered sandstone and shale > pluvial sediments > fluvioglacial sand > weathered granite > slope deposit > glacial sediments. The deflation rates exhibited strong positive correlations with the erodible particle (0.063-2mm) content and sorting features. In contrast, the deflation rates had obvious negative correlations with the contents of silt clay (<0.063 mm) and gravel (>2 mm). According to the deflation rates, the 8 typical clastic sediments can be divided into four categories: (1) lacustrine and alluvial sand, which are readily prone to wind erosion, assumed to be the main source of aeolian sand; (2) weathered sandstone and shale, pluvial sediments and fluvioglacial sand with considerable deflation rates, might be the secondary source of aeolian sand; (3) weathered granite and slope deposit having the lower deflation rates, could supply a little aeolian sand; and (4) glacial sediments with a strong anti-erodibility, could hardly offer any aeolian sand, hi addition to the strong wind conditions, the exposure of extensive lacustrine sand induced by the desiccation of inland lake basin, as well as the pre-sorting of clastic sediments by flowing water should be the key factors influencing the development of sand deserts in China. The possible reason the sand deserts in China being mostly distributed around the inland lake basins and along riverbanks could be better understood through sand source analysis.
英文关键词	sand source sand deserts wind tunnel experiment deflation rate sorting features doi
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:2431566
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334909
作者单位	Song Yang, College of Resources Science and Technology, Beijing Normal University, Key Laboratory of Environmental Change and Natural Disaster，the Ministry of Education of China, Beijing 100875, China.; Li Xiaoyan, College of Resources Science and Technology, Beijing Normal University, Key Laboratory of Environmental Change and Natural Disaster，the Ministry of Education of China, Beijing 100875, China.; Liu Lianyou, College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China.; Wang Jianhua, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Luo Wangquan, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Liu Yuzhang, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Song Yang,Liu Lianyou,Li Xiaoyan,et al. Deflation rates of different clastic sediments in the arid regions of China[J],2006,16(4):495-501.
APA	Song Yang,Liu Lianyou,Li Xiaoyan,Wang Jianhua,Luo Wangquan,&Liu Yuzhang.(2006).Deflation rates of different clastic sediments in the arid regions of China.Journal of Geographical Sciences,16(4),495-501.
MLA	Song Yang,et al."Deflation rates of different clastic sediments in the arid regions of China".Journal of Geographical Sciences 16.4(2006):495-501.