Climatic variations over the last 4000 cal yr BP in the western margin of the Tarim Basin, Xinjiang, reconstructed from pollen data

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	Climatic variations over the last 4000 cal yr BP in the western margin of the Tarim Basin, Xinjiang, reconstructed from pollen data
	Zhao, Keliang 1,2; Li, Xiaoqiang 1,2; Dodson, John 3; Atahan, Pia 3; Zhou, Xinying 1,2; Bertuch, Fiona 3; lixiaoqiang@ivpp.ac.cn
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2012-03-01
卷号	321 页码:16-23
关键词	Western Tarim Basin Late Holocene Pollen Climatic Variations Mid-latitude Westerlies
ISSN号	0031-0182
文献子类	Article
英文摘要	The nature of Holocene climate patterns and mechanisms in central Asia are open areas of inquiry. In this study, regional vegetation and climate dynamics over the last ca. 4000 years are reconstructed using a high resolution pollen record from the Kashgar oasis, on the western margin of the Tarim Basin, central Asia. Ephedra, Chenopodiaceae and Cannabaceae dominate the pollen assemblages, and Chenopodiaceae/Ephedra ratios and percentages of long-distance transported pollen taxa are used to infer regional variations in moisture and vegetation density. Three periods of increased humidity are identified, from ca. 4000-2620 cal yr BP, ca. 1750-1260 cal yr BP and ca. 550-390 cal yr BP and these periods coincide with the respective Holocene Bond Events 2,1 and 0, which are reported in the North Atlantic. Any increase in strength, or southward migration, of the mid-latitude westerlies would result in more precipitation and meltwater on mountains surrounding the study site. Warm and dry conditions are detected between ca.1260 and 840 cal yr BP (AD 690-1110), and cool and wet conditions are detected between ca. 840 and 680 cal yr BP (AD 1110-1270), during the Medieval Warm Period (ca. AD 800-1200). The climate variations in the Kashgar region over the last 4000 years appear to have been dominated by changes to the westerly circulation system and glacier dynamics on surrounding mountains. However, the question of whether the Asian monsoon delivers precipitation to the western Tarim Basin, a region that is influenced by several climate systems, is still open to debate. (C) 2012 Elsevier B.V. All rights reserved.
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WOS关键词	ATMOSPHERIC CIRCULATION PATTERNS ; LATE HOLOCENE HISTORY ; MEDIEVAL-WARM-PERIOD ; LAKE ISSYK-KUL ; CENTRAL-ASIA ; NW CHINA ; NORTH-ATLANTIC ; ICE CORE ; MOISTURE EVOLUTION ; TIBETAN PLATEAU
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
WOS记录号	WOS:000301912000002
公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/4320]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	lixiaoqiang@ivpp.ac.cn
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Lab Human Evolut, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 3.Australian Nucl Sci & Technol Org, Inst Environm Res, Kirrawee, NSW 2232, Australia
推荐引用方式 GB/T 7714	Zhao, Keliang,Li, Xiaoqiang,Dodson, John,et al. Climatic variations over the last 4000 cal yr BP in the western margin of the Tarim Basin, Xinjiang, reconstructed from pollen data[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2012,321:16-23.
APA	Zhao, Keliang.,Li, Xiaoqiang.,Dodson, John.,Atahan, Pia.,Zhou, Xinying.,...&lixiaoqiang@ivpp.ac.cn.(2012).Climatic variations over the last 4000 cal yr BP in the western margin of the Tarim Basin, Xinjiang, reconstructed from pollen data.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,321,16-23.
MLA	Zhao, Keliang,et al."Climatic variations over the last 4000 cal yr BP in the western margin of the Tarim Basin, Xinjiang, reconstructed from pollen data".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 321(2012):16-23.