干旱区生态环境知识资源中心(Arid): Aridification signatures from fossil pollen indicate a drying climate in east-central Tibet during the late Eocene

Arid

DOI	10.5194/cp-16-2255-2020
	Aridification signatures from fossil pollen indicate a drying climate in east-central Tibet during the late Eocene
	Yuan, Qin; Barbolini, Natasha; Rydin, Catarina; Gao, Dong-Lin; Wei, Hai-Cheng; Fan, Qi-Shun; Qin, Zhan-Jie; Du, Yong-Sheng; Shan, Jun-Jie; Shan, Fa-Shou; Vajda, Vivi
通讯作者	Barbolini, N
来源期刊	CLIMATE OF THE PAST
ISSN	1814-9324
EISSN	1814-9332
出版年	2020
卷号	16 期号:6 页码:2255-2273
英文摘要	Central Asia experienced a number of significant elevational and climatic changes during the Cenozoic, but much remains to be understood regarding the timing and driving mechanisms of these changes as well as their influence on ancient ecosystems. Here, we describe the palaeoecology and palaeoclimate of a new section from the Nangqian Basin in Tibet, north-western China, dated as Bartonian (41.2-37.8 Ma; late Eocene) based on our palynological analyses. Located on the east-central part of what is today the Tibetan Plateau, this section is excellently placed for better understanding the palaeoecological history of Tibet following the Indo-Asian collision. Our new palynological record reveals that a strongly seasonal steppe-desert ecosystem characterized by drought-tolerant shrubs, diverse ferns, and an underlying component of broad-leaved forests existed in east-central Tibet during the Eocene, influenced by a southern monsoon. A transient warming event, possibly the middle Eocene climatic optimum (MECO; 40 Ma), is reflected in our record by a temporary increase in regional tropical taxa and a concurrent decrease in steppe-desert vegetation. In the late Eocene, a drying signature in the palynological record is linked to proto-Paratethys Sea retreat, which caused widespread long-term aridification across the region. To better distinguish between local climatic variation and farther-reaching drivers of Central Asian palaeoclimate and elevation, we correlated key palynological sections across the Tibetan Plateau by means of established radioisotopic ages and biostratigraphy. This new palynozonation illustrates both intra- and inter-basinal floral response to Qinghai-Tibetan uplift and global climate change during the Paleogene, and it provides a framework for the age assignment of future palynological studies in Central Asia. Our work highlights the ongoing challenge of integrating various deep time records for the purpose of reconstructing palaeoelevation, indicating that a multi-proxy approach is vital for unravelling the complex uplift history of Tibet and its resulting influence on Asian climate.
类型	Article
语种	英语
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000592950700001
WOS关键词	WESTERN QAIDAM BASIN ; HOH XIL BASIN ; PALYNOLOGICAL RECORD ; ASIAN MONSOONS ; NANGQIAN BASIN ; TECTONIC EVOLUTION ; NORTHWEST CHINA ; STABLE-ISOTOPE ; PLATEAU UPLIFT ; XINING BASIN
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327671
作者单位	[Yuan, Qin; Gao, Dong-Lin; Wei, Hai-Cheng; Fan, Qi-Shun; Qin, Zhan-Jie; Du, Yong-Sheng; Shan, Jun-Jie; Shan, Fa-Shou] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Peoples R China; [Yuan, Qin; Gao, Dong-Lin; Wei, Hai-Cheng; Fan, Qi-Shun; Qin, Zhan-Jie; Du, Yong-Sheng; Shan, Jun-Jie; Shan, Fa-Shou] Chinese Acad Sci, Qinghai Inst Salt Lakes, Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining, Peoples R China; [Yuan, Qin; Shan, Jun-Jie] Univ Chinese Acad Sci, Beijing, Peoples R China; [Yuan, Qin; Vajda, Vivi] Swedish Museum Nat Hist, Dept Palaeobiol, Stockholm, Sweden; [Barbolini, Natasha; Rydin, Catarina] Stockholm Univ, Dept Ecol Environm & Plant Sci, Stockholm, Sweden; [Barbolini, Natasha; Rydin, Catarina] Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; [Barbolini, Natasha] Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Dept Ecosyst & Landscape Dynam, Amsterdam, Netherlands; [Rydin, Catarina] Royal Swedish Acad Sci, Bergius Fdn, Stock...
推荐引用方式 GB/T 7714	Yuan, Qin,Barbolini, Natasha,Rydin, Catarina,et al. Aridification signatures from fossil pollen indicate a drying climate in east-central Tibet during the late Eocene[J],2020,16(6):2255-2273.
APA	Yuan, Qin.,Barbolini, Natasha.,Rydin, Catarina.,Gao, Dong-Lin.,Wei, Hai-Cheng.,...&Vajda, Vivi.(2020).Aridification signatures from fossil pollen indicate a drying climate in east-central Tibet during the late Eocene.CLIMATE OF THE PAST,16(6),2255-2273.
MLA	Yuan, Qin,et al."Aridification signatures from fossil pollen indicate a drying climate in east-central Tibet during the late Eocene".CLIMATE OF THE PAST 16.6(2020):2255-2273.