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DOI	10.1016/j.gloplacha.2021.103707
	Controls of precipitation and vegetation variability on the NE Tibetan Plateau during the late Pliocene warmth (similar to 3.5-3.0 Ma)
	Schwarz, Florian; Salzmann, Ulrich; Koutsodendris, Andreas; Nie, Junsheng; Friedrich, Oliver; Ni, Jian; Garzione, Carmala; Fang, Xiaomin; Wu, Fuli; Woodward, John; Appel, Erwin; Pross, Joerg
通讯作者	Salzmann, U (通讯作者)
发表日期	2022
ISSN	0921-8181
EISSN	1872-6364
卷号	208
英文摘要	To better understand precipitation variability in a warmer-than-present world with elevated atmospheric CO2 concentrations, this study presents high-resolution palynological and element geochemical analyses of a late Pliocene drill core (3.5-3.0 Ma) from the today hyperarid Qaidam Basin on the north-eastern Tibetan Plateau. Quantitative rainfall estimates based on modern pollen-climate transfer functions indicate a 10-fold higher annual rainfall during the mid-Piacenzian Warm Period (mPWP; 3.264-3.025 Ma) than today, with values of 300-400 mm/a. Throughout the late Pliocene, the Qaidam Basin was covered with a temperate semi-desert shrubland. Varying percentages of the local lakeshore vegetation and long-distance arboreal pollen, as well as fluctuations in carbonate-silicate geochemistry, indicate a highly variable rainfall. Our study suggests that precipitation in the northern Qaidam Basin was primarily controlled by an East Asian Monsoon system (EAMS) that was located further north than today. Spectral analysis of the Artemisia/Chenopodiaceae (A/C) pollen ratio indicates an orbitally controlled cyclicity with a strong link between moisture availability and insolation forcing. A decline in precipitation before the end of the mPWP at ca. 3.15 Ma is likely to be linked to cooling in the North Atlantic and initial Northern Hemisphere ice-sheet build-up. Our study identifies NH insolation and ice-sheet advances as major controls of the late Pliocene variability and strength of the EAMS in semi-arid NW-China.
关键词	WESTERN QAIDAM BASIN COEXISTENCE APPROACH ASTRONOMICAL TIMESCALE BIOME DISTRIBUTION NORTHERN CHINA CLIMATE-CHANGE CENTRAL-ASIA TARIM BASIN ICE-SHEET POLLEN
英文关键词	Piacenzian; Tibetan Plateau; East Asian Monsoon; Palynology; XRF; Qaidam Basin
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000740442500002
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260764
推荐引用方式 GB/T 7714	Schwarz, Florian,Salzmann, Ulrich,Koutsodendris, Andreas,et al. Controls of precipitation and vegetation variability on the NE Tibetan Plateau during the late Pliocene warmth (similar to 3.5-3.0 Ma)[J]. 中国科学院青藏高原研究所,2022,208.
APA	Schwarz, Florian.,Salzmann, Ulrich.,Koutsodendris, Andreas.,Nie, Junsheng.,Friedrich, Oliver.,...&Pross, Joerg.(2022).Controls of precipitation and vegetation variability on the NE Tibetan Plateau during the late Pliocene warmth (similar to 3.5-3.0 Ma).GLOBAL AND PLANETARY CHANGE,208.
MLA	Schwarz, Florian,et al."Controls of precipitation and vegetation variability on the NE Tibetan Plateau during the late Pliocene warmth (similar to 3.5-3.0 Ma)".GLOBAL AND PLANETARY CHANGE 208(2022).