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

doi:10.1191/0959683602hl525rr

IEECAS OpenIR > 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
	2002-01
发表期刊	HOLOCENE
卷号	12 期号:1 页码:107-112
文章类型	Article
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.
关键词	human impact natural environment Loess Plateau desert-loess boundary monsoons desertification China
学科领域	Physical Geography ; Geology
DOI	10.1191/0959683602hl525rr
关键词[WOS]	MONSOON CLIMATE ; EAST-ASIA ; PALEOSOLS ; SEQUENCES ; EVENT
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000172904400011
出版者	ARNOLD, HODDER HEADLINE PLC
引用统计	被引频次：67[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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.