干旱区生态环境知识资源中心(Arid): Late Pliocene vegetation turnover on the NE Tibetan Plateau (Central Asia) triggered by early Northern Hemisphere glaciation

Arid

DOI	10.1016/j.gloplacha.2019.06.001
	Late Pliocene vegetation turnover on the NE Tibetan Plateau (Central Asia) triggered by early Northern Hemisphere glaciation
	Koutsodendris, Andreas 1; Allstaedt, Frederik J.1; Kern, Oliver A.1; Kousis, Ilias 1; Schwarz, Florian 2; Vannacci, Martina 1; Woutersen, Amber 3; Appel, Erwin 4; Berke, Melissa A.5; Fang, Xiaomin 6; Friedrich, Oliver 1; Hoorn, Carina 3; Salzmann, Ulrich 2; Pross, Joerg 1
通讯作者	Koutsodendris, Andreas
来源期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
EISSN	1872-6364
出版年	2019
卷号	180 页码:117-125
英文摘要	To reconstruct the timing and underlying forcing of major shifts in the composition of terrestrial ecosystems in arid Central Asia during the late Cenozoic (past similar to 7 Ma), we carry out palynological analysis of lake sediments from the Qaidam Basin (NE Tibetan Plateau, China). Our results show that the steppe/semi-desert biomes dominating the Qaidam Basin experienced marked turnovers at similar to 3.6 and 3.3 Ma. Most notably, the younger of these turnover events is characterized by a two- to three-fold expansion of Artemisia at the expense of other steppe/semi-desert taxa. This turnover event led to the replacement of the Ephedraceae/Chenopodiaceae-dominated and Nitraria-rich steppe/semi-deserts that were dominant in the Qaidam Basin during the Paleogene and abundant during the Miocene by Artemisia/Chenopodiaceae-dominated steppe/semi-deserts as they exist until today. The vegetation turnover events are synchronous with shifts towards drier conditions in Central Asia as documented in climate records from the Chinese Loess Plateau and the Central North Pacific Ocean. On a global scale, they can be correlated to early glaciation events in the Northern Hemisphere during the Pliocene. Integration of our palynological data from the Qaidam Basin with Northern Hemisphere climate-proxy and regional-scale tectonic information suggests that the uplift of the Tibetan Plateau posed ecological pressure on Central Asian plant communities, which made them susceptible to the effects of early Northern Hemisphere glaciations during the late Pliocene. Although these glaciations were relatively small in comparison to their Pleistocene counterparts, the transition towards drier/colder conditions pushed previously existing plant communities beyond their tolerance limits, thereby causing a fundamental reorganization of arid ecosystems. The Artemisia dominance since similar to 3.3 Ma resulting from this reorganization marks a point in time after which the Artemisia/Chenopodiaceae pollen ratio can serve as a reliable indicator for moisture availability in Central Asia.
英文关键词	Aridification Neogene Northern Hemisphere glaciation Qaidam Basin Tibetan Plateau Vegetation dynamics
类型	Article
语种	英语
国家	Germany ; England ; Netherlands ; USA ; Peoples R China
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000478709700008
WOS关键词	WESTERN QAIDAM BASIN ; DRILL CORE SG-1 ; CLIMATE-CHANGE ; PALYNOLOGICAL RECORD ; HOLOCENE VEGETATION ; POLLEN ; UPLIFT ; CHINA ; LAKE ; MA
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216074
作者单位	1.Heidelberg Univ, Inst Earth Sci, D-69120 Heidelberg, Germany; 2.Northumbria Univ, Dept Geog & Environm Sci, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England; 3.Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, NL-1090 GE Amsterdam, Netherlands; 4.Univ Tubingen, Dept Geosci, D-72074 Tubingen, Germany; 5.Univ Notre Dame, Dept Civil & Environm Engn & Earth Sci, 156 Fitzpatrick Hall, Notre Dame, IN 46556 USA; 6.Chinese Acad Sci, Inst Tibetan Plateau Res, POB 2871, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Koutsodendris, Andreas,Allstaedt, Frederik J.,Kern, Oliver A.,et al. Late Pliocene vegetation turnover on the NE Tibetan Plateau (Central Asia) triggered by early Northern Hemisphere glaciation[J]. 中国科学院青藏高原研究所,2019,180:117-125.
APA	Koutsodendris, Andreas.,Allstaedt, Frederik J..,Kern, Oliver A..,Kousis, Ilias.,Schwarz, Florian.,...&Pross, Joerg.(2019).Late Pliocene vegetation turnover on the NE Tibetan Plateau (Central Asia) triggered by early Northern Hemisphere glaciation.GLOBAL AND PLANETARY CHANGE,180,117-125.
MLA	Koutsodendris, Andreas,et al."Late Pliocene vegetation turnover on the NE Tibetan Plateau (Central Asia) triggered by early Northern Hemisphere glaciation".GLOBAL AND PLANETARY CHANGE 180(2019):117-125.