Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years

doi:10.1191/0959683602hl525rr

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）

	Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years
	Zhou, WJ; Dodson, J; Head, MJ; Li, BS; Hou, YJ; Lu, XF; Donahue, DJ; Jull, AJT
刊名	HOLOCENE
	2002-01
卷号	12 期号:1 页码:107-112
关键词	human impact natural environment Loess Plateau desert-loess boundary monsoons desertification China
DOI	10.1191/0959683602hl525rr
文献子类	Article
英文摘要	The desert/loess transition zone in northern China is sensitive to climate variability, which is controlled mainly by the relative strengths of the East Asian summer and winter monsoons. Sandy loess layers found in the Loess Plateau and palaeosol sequences found in the sandy desert demonstrate latitudinal shifts of the Southern desert margin over the last 20000 years. Stratigraphic investigations together with radiocarbon and some thermoluminescence dating, show that during the last glacial maximum the desert margin was at its most southerly position (38 degreesN). During the early Holocene, it moved northward about three degrees in latitude (41 degreesN). At present. the desert margin is again close to its most southerly position (38 degrees 21'N), yet the northern boundary position of modern summer monsoon activity is placed at 41 degrees 45'N. which is close to the estimated Holocene Optimum desert margin (41 degreesN). This situation cannot be explained from natural climate models. Hence, an external driving mechanism needs to be considered, and the most obvious one is that caused by human activity on the natural environment over the last 3000 years. Historical evidence tends to reinforce this consideration.
学科主题	Physical Geography ; Geology
WOS关键词	MONSOON CLIMATE ; EAST-ASIA ; PALEOSOLS ; SEQUENCES ; EVENT
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
语种	英语
出版者	ARNOLD, HODDER HEADLINE PLC
WOS记录号	WOS:000172904400011
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/11928]
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	Zhou, WJ,Dodson, J,Head, MJ,et al. Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years[J]. HOLOCENE,2002,12(1):107-112.
APA	Zhou, WJ.,Dodson, J.,Head, MJ.,Li, BS.,Hou, YJ.,...&Jull, AJT.(2002).Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years.HOLOCENE,12(1),107-112.
MLA	Zhou, WJ,et al."Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years".HOLOCENE 12.1(2002):107-112.