Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau

doi:10.1360/02tb9381

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（1985-2004）

	Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau
	Wu, HB; Guo, ZT; Fang, XM; Zhang, JW; Chen, FH
刊名	CHINESE SCIENCE BULLETIN
	2002-10
卷号	47 期号:20 页码:1739-1745
关键词	aridification loess-paleosol sequences organic carbon isotope chemical weathering intensity Tibetan Plateau
DOI	10.1360/02tb9381
文献子类	Article
英文摘要	Study on two loess sections, one located at Wuwei near the Tengger Desert in northwestern China, another located near Ganzi at the southeast margin of the Tibetan Plateau in southwest China, reveals a coeval drying step occurred at similar to250 kaBP. It is expressed by the increase in eolian grain-size at Wuwei, and by a drastic extension of C4 plants and a decrease of loess chemical weathering intensity at Ganzi. Examination of the available eolian data indicates that the event has also been clearly documented in the loess sections near the deserts in northern China, and in the eolian records from the North Pacific. On the contrary, the signal is rather weak for the central and southern Loess Plateau regions as well as for Central Asia, where the climates are influenced by the southeast Asian monsoon and the westerlies, respectively. Since the climate at Ganzi is under strong control of the southwest Asian monsoon, we interpret this drying step as a result of decreased influence of the southwest summer monsoon. This decrease in monsoon moisture is attributable to the uplift of the Hengduan Mountains, the southeast margin of the Tibetan Plateau at similar to250 ka ago.
学科主题	Science & Technology - Other Topics
WOS关键词	LOESS ; CLIMATE ; MA ; PALEOMAGNETISM ; MOUNTAINS ; PLIOCENE ; PALEOSOL ; PACIFIC ; DESERT
WOS研究方向	Multidisciplinary Sciences
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000178433900015
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/12049]
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Wu, HB,Guo, ZT,Fang, XM,et al. Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau[J]. CHINESE SCIENCE BULLETIN,2002,47(20):1739-1745.
APA	Wu, HB,Guo, ZT,Fang, XM,Zhang, JW,&Chen, FH.(2002).Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau.CHINESE SCIENCE BULLETIN,47(20),1739-1745.
MLA	Wu, HB,et al."Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau".CHINESE SCIENCE BULLETIN 47.20(2002):1739-1745.