气候变化领域集成服务门户(CCPortal): A Middle Eocene lowland humid subtropical Shangri-La ecosystem in central Tibet

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DOI	10.1073/pnas.2012647117
	A Middle Eocene lowland humid subtropical Shangri-La ecosystem in central Tibet
	Su, Tao; Spicer, Robert A.; Wu, Fei-Xiang; Farnsworth, Alexander; Huang, Jian; Del Rio, Cedric; Deng, Tao; Ding, Lin; Deng, Wei-Yu-Dong; Huang, Yong-Jiang; Hughes, Alice; Jia, Lin-Bo; Jin, Jian-Hua; Li, Shu-Feng; Liang, Shui-Qing; Liu, Jia; Liu, Xiao-Yan; Sherlock, Sarah; Spicer, Teresa; Srivastava, Gaurav; Tang, He; Valdes, Paul; Wang, Teng-Xiang; Widdowson, Mike; Wu, Meng-Xiao; Xing, Yao-Wu; Xu, Cong-Li; Yang, Jian; Zhang, Cong; Zhang, Shi-Tao; Zhang, Xin-Wen; Zhao, Fan; Zhou, Zhe-Kun
通讯作者	Su, T ; Zhou, ZK (通讯作者)
发表日期	2020
ISSN	0027-8424
EISSN	1091-6490
起始页码	32989
结束页码	32995
卷号	117 期号:52
英文摘要	Tibet's ancient topography and its role in climatic and biotic evolution remain speculative due to a paucity of quantitative surface-height measurements through time and space, and sparse fossil records. However, newly discovered fossils from a present elevation of similar to 4,850 m in central Tibet improve substantially our knowledge of the ancient Tibetan environment. The 70 plant fossil taxa so far recovered include the first occurrences of several modern Asian lineages and represent a Middle Eocene (similar to 47 Mya) humid subtropical ecosystem. The fossils not only record the diverse composition of the ancient Tibetan biota, but also allow us to constrain the Middle Eocene land surface height in central Tibet to similar to 1,500 +/- 900 m, and quantify the prevailing thermal and hydrological regime. This Shangri-La-like ecosystem experienced monsoon seasonality with a mean annual temperature of similar to 19 degrees C, and frosts were rare. It contained few Gondwanan taxa, yet was compositionally similar to contemporaneous floras in both North America and Europe. Our discovery quantifies a key part of Tibetan Paleogene topography and climate, and highlights the importance of Tibet in regard to the origin of modern Asian plant species and the evolution of global biodiversity.
关键词	LUNPOLA BASIN PLATEAU BIODIVERSITY EVOLUTION MONSOONS PALEOELEVATION CONSERVATION TOPOGRAPHY HIMALAYA RECORD
英文关键词	biodiversity; fossil; monsoon; Tibetan Plateau; topography
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000604551600028
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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/260109
推荐引用方式 GB/T 7714	Su, Tao,Spicer, Robert A.,Wu, Fei-Xiang,et al. A Middle Eocene lowland humid subtropical Shangri-La ecosystem in central Tibet[J]. 中国科学院青藏高原研究所,2020,117(52).
APA	Su, Tao.,Spicer, Robert A..,Wu, Fei-Xiang.,Farnsworth, Alexander.,Huang, Jian.,...&Zhou, Zhe-Kun.(2020).A Middle Eocene lowland humid subtropical Shangri-La ecosystem in central Tibet.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(52).
MLA	Su, Tao,et al."A Middle Eocene lowland humid subtropical Shangri-La ecosystem in central Tibet".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.52(2020).