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DOI	10.1016/j.palaeo.2011.05.043
	Miocene vegetation and climatic changes reconstructed from a sporopollen record of the Tianshui Basin, NE Tibetan Plateau
	Hui, Zhengchuang; Li, Jijun; Xu, Qinghai; Song, Chunhui; Zhang, Jun; Wu, Fuli; Zhao, Zhijun
通讯作者	Li, JJ (通讯作者)
发表日期	2011
ISSN	0031-0182
EISSN	1872-616X
起始页码	373
结束页码	382
卷号	308 期号:3-4
英文摘要	The Miocene vegetation and climate history of western China remains unclear. However, widely-distributed Miocene sediments of the Tianshui Basin in the NE Tibetan Plateau provide a great potential for deciphering the Miocene vegetation and climate history of this region. This paper presents first sporopollen record from these sediments, covering the period from 17.1 to 6.1 Ma. Sporopollen data reveal that temperate, warm-temperate broad-leaved forest of Quercus. Ulmus and Betula dominated the Tianshui region between 17.1 and 14.7 Ma, which was replaced by forest or forest-steppe of Ulmus, Artemisia and Betula between 14.7 and 11.7 Ma. After a return to a broad-leaved forest of Betula and Quercus during 11.7-8.5 Ma, the forest decreased rapidly and was replaced mostly by steppe vegetation (mainly composed of Artemisia, Chenopodiaceae and Poaceae) after 8.5 Ma. We interpret the observed vegetation changes as a result of global climate change, which is characterized by global cooling, development of Arctic ice-sheets and permanent El Nino state after the Middle Miocene Climatic Optimum. The rapid development of steppe at about 8.5 Ma suggested a permanent drying of the Asian interior at this time, coinciding with the onset of the well-known Hipparion red clay deposition in North China. (C) 2011 Elsevier B.V. All rights reserved.
关键词	ICE-SHEET DEVELOPMENT LOESS PLATEAU ASIAN MONSOON GLOBAL CLIMATE MARGIN EROSION CENTRAL CHINA SEA-LEVEL EVOLUTION UPLIFT MA
英文关键词	Sporopollen; Paleovegetation; Climate change; Miocene; Tianshui Basin
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000294396900011
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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/257936
推荐引用方式 GB/T 7714	Hui, Zhengchuang,Li, Jijun,Xu, Qinghai,et al. Miocene vegetation and climatic changes reconstructed from a sporopollen record of the Tianshui Basin, NE Tibetan Plateau[J]. 中国科学院青藏高原研究所,2011,308(3-4).
APA	Hui, Zhengchuang.,Li, Jijun.,Xu, Qinghai.,Song, Chunhui.,Zhang, Jun.,...&Zhao, Zhijun.(2011).Miocene vegetation and climatic changes reconstructed from a sporopollen record of the Tianshui Basin, NE Tibetan Plateau.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,308(3-4).
MLA	Hui, Zhengchuang,et al."Miocene vegetation and climatic changes reconstructed from a sporopollen record of the Tianshui Basin, NE Tibetan Plateau".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 308.3-4(2011).