Optical dating of Holocene dune sands from the Hulun Buir Desert, northeastern China

doi:10.1191/0959683606hl942rr

	Optical dating of Holocene dune sands from the Hulun Buir Desert, northeastern China
	Li, SH ; Sun, JM
刊名	HOLOCENE
	2006-04-01
卷号	16 期号:3 页码:457-462
关键词	optical dating Holocene Hulun Buir Desert dune activity China monsoon
ISSN号	0959-6836
DOI	10.1191/0959683606hl942rr
文献子类	Article
英文摘要	Aeolian deposits from the Hulun Buir Desert of northeastern China are studied with optically stimulated luminescence dating methods to establish the chronology of dune building phases and climatic changes since the last deglaciation. Our results indicate that wet climate, marked by dune stabilization and soil development in the Hulun Buir Desert, commenced at similar to 11 ka ago, and this early episode of dune stabilization lasted until similar to 4.4 ka ago. This optimum climate between similar to 11 and similar to 4.4 ka ago is mostly the response to the strengthened monsoon circulation and increased precipitation in the Northern Hemisphere. The environment generally became arid after similar to 4.4 ka ago, but the dry climate was interrupted by three phases of weak soil development occurring at similar to 1.8-1.4, similar to 1.2-1.0 and similar to 0.84-0.5 ka ago, respectively. Such short events of dune stabilization were associated with the warm and humid climate in historical time. However, the present dune mobilization in the Hulun Buir Desert is mainly the result of poor land-use practices (land cultivation and overgrazing) since about 300 years ago.
WOS关键词	LUMINESCENCE ; RECONSTRUCTION ; SEDIMENTS ; KALAHARI ; CLIMATE ; ARIDITY ; EXAMPLE ; AFRICA ; QUARTZ
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	HODDER ARNOLD, HODDER HEADLINE PLC
WOS记录号	WOS:000236924000013
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66660]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, SH
作者单位	1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Li, SH,Sun, JM. Optical dating of Holocene dune sands from the Hulun Buir Desert, northeastern China[J]. HOLOCENE,2006,16(3):457-462.
APA	Li, SH,&Sun, JM.(2006).Optical dating of Holocene dune sands from the Hulun Buir Desert, northeastern China.HOLOCENE,16(3),457-462.
MLA	Li, SH,et al."Optical dating of Holocene dune sands from the Hulun Buir Desert, northeastern China".HOLOCENE 16.3(2006):457-462.