Late Miocene southwestern Chinese floristic diversity shaped by the southeastern uplift of the Tibetan Plateau

doi:10.1016/j.palaeo.2014.06.041

	Late Miocene southwestern Chinese floristic diversity shaped by the southeastern uplift of the Tibetan Plateau
	Jacques, Frederic M. B.1; Su, Tao 1; Spicer, Robert A.3; Xing, Yao-Wu 4; Huang, Yong-Jiang 2; Zhou, Zhe-Kun1,2 ; Zhou,ZK (reprint author),Chinese Acad Sci,Xishuangbanna Trop Bot Garden,Key Lab Trop Forest Ecol,Mengla 666303,Peoples R China.; zhouzk@xtbg.ac.cn
	2014-10-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	411 页码:208-215
摘要	In southwestern China and Southeast Asia modern geology and topography have been influenced strongly by the collision between the Indian and Eurasian plates. The southeastern margin of the Tibetan Plateau is well known for its high biodiversity and diverse vegetation types. While the present diversity is explained by the geological history of this region, to date no study has looked at how past vegetation was shaped by geological and topographical history. In this study, we focus on three coeval late Miocene leaf assemblages from Yunnan: Lincang, Xiaolongtan and Xianfeng. The palaeoelevation of these three sites is reconstructed using enthalpy as a palaeoaltimeter. Enthalpy at the fossil site is reconstructed based on leaf physiognomy; the difference between this enthalpy and enthalpy at sea-level is used as a proxy for altitude. The palaeoaltitudes are resolved as 214 +/- 901 m asl for Lincang, 530 +/- 901 m asl for Xiaolongtan, and 1936 +/- 901 m asl for Xianfeng. The floristic components of these floras are analysed for their geographical elements. There is a gradient in the percentage of tropical genera between the three floras from Lincang, at the lowest elevation, to Xianfeng, at the highest level. For Lincang, this percentage exceeds the threshold used to define present day tropical regions. Our results demonstrate that there as already a floristic differentiation in Yunnan during the late Miocene. Floras with tropical affinities were at low altitude, whereas floras with temperate affinities were at high altitude. With the later uplift of southern Yunnan, floras with tropical affinities retreated to the south where they are still present. The uplift framework reconstructed in this paper gives a tectonic context for further studies on the impact of uplift on biodiversity. (c) 2014 Elsevier B.V. All rights reserved.
关键词	China Miocene Palaeoaltitude Palaeovegetation Uplift Yunnan
学科领域	Physical Geography ; Geology ; Paleontology
DOI	10.1016/j.palaeo.2014.06.041
收录类别	SCI
语种	英语
WOS记录号	WOS:000342269200018
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/18368
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Zhou,ZK (reprint author),Chinese Acad Sci,Xishuangbanna Trop Bot Garden,Key Lab Trop Forest Ecol,Mengla 666303,Peoples R China.; zhouzk@xtbg.ac.cn
作者单位	1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650204, Peoples R China 3.Open Univ, Ctr Earth Planetary Space & Astron Res, Milton Keynes MK7 6AA, Bucks, England 4.Univ Zurich, Inst Systemat Bot, CH-8008 Zurich, Switzerland
推荐引用方式 GB/T 7714	Jacques, Frederic M. B.,Su, Tao,Spicer, Robert A.,et al. Late Miocene southwestern Chinese floristic diversity shaped by the southeastern uplift of the Tibetan Plateau[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2014,411:208-215.
APA	Jacques, Frederic M. B..,Su, Tao.,Spicer, Robert A..,Xing, Yao-Wu.,Huang, Yong-Jiang.,...&zhouzk@xtbg.ac.cn.(2014).Late Miocene southwestern Chinese floristic diversity shaped by the southeastern uplift of the Tibetan Plateau.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,411,208-215.
MLA	Jacques, Frederic M. B.,et al."Late Miocene southwestern Chinese floristic diversity shaped by the southeastern uplift of the Tibetan Plateau".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 411(2014):208-215.

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