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DOI | 10.1073/pnas.2012647117 |
A Middle Eocene lowland humid subtropical “Shangri-La” ecosystem in central Tibet | |
Tao Su; Robert A. Spicer; Fei-Xiang Wu; Alexander Farnsworth; Jian Huang; Cédric Del Rio; Tao Deng; Lin Ding; Wei-Yu-Dong Deng; Yong-Jiang Huang; Alice Hughes; Lin-Bo Jia; Jian-Hua Jin; Shu-Feng Li; Shui-Qing Liang; Jia Liu; Xiao-Yan Liu; Sarah Sherlock; Teresa Spicer; Gaurav Srivastava; He Tang; Paul Valdes; Teng-Xiang Wang; Mike Widdowson; Meng-Xiao Wu; Yao-Wu Xing; Cong-Li Xu; Jian Yang; Cong Zhang; Shi-Tao Zhang; Xin-Wen Zhang; Fan Zhao; Zhe-Kun Zhou | |
2020-12-07 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2020 |
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 ∼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 (∼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 ∼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 ∼19 °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. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/308307 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Tao Su,Robert A. Spicer,Fei-Xiang Wu,等. A Middle Eocene lowland humid subtropical “Shangri-La” ecosystem in central Tibet[J]. Proceedings of the National Academy of Science,2020. |
APA | Tao Su.,Robert A. Spicer.,Fei-Xiang Wu.,Alexander Farnsworth.,Jian Huang.,...&Zhe-Kun Zhou.(2020).A Middle Eocene lowland humid subtropical “Shangri-La” ecosystem in central Tibet.Proceedings of the National Academy of Science. |
MLA | Tao Su,et al."A Middle Eocene lowland humid subtropical “Shangri-La” ecosystem in central Tibet".Proceedings of the National Academy of Science (2020). |
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