Universität zu Köln

Li, Xinling, Hao, Qingzhen ORCID: 0000-0002-6281-5817, Wei, Mingjian, Andreev, Andrei A., Wang, Junping ORCID: 0000-0002-1232-2141, Tian, Yanyan, Li, Xiaolei, Cai, Maotang, Hu, Jianmin and Shi, Wei (2017). Phased uplift of the northeastern Tibetan Plateau inferred from a pollen record from Yinchuan Basin, northwestern China. Sci Rep, 7. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

The uplift of the Tibetan Plateau (TP) significantly affected both regional and global climates. Although there is evidence that the Tibetan Plateau experienced uplift during the Quaternary, the timing and amplitude are poorly constrained. However, the increased availability of long sedimentary records of vegetation change provides an opportunity to reconstruct the timing of the uplift. Here, we present a well-dated, high-resolution pollen record for the last 2.6 Ma from the Yinchuan Basin, which was incised by the Yellow River with its source in the northeastern Tibetan Plateau. Variations in the Artemisia/Chenopodiaceae (A/C) ratio of the reveal changes in moisture conditions in the Yinchuan Basin during glacial-interglacial cycles, as well as a gradual long-term aridification trend which is consistent with progressive global cooling. However, fluctuations in the percentages of Picea and Abies differ from those of the A/C ratio and we propose that they reflect changes in the vegetation and environment of high elevation areas. The Picea and Abies records reveal two phases of increased representation, at 2.1 and 1.2 Ma, which may indicate phases in the uplift of the northeastern Tibetan Plateau. Thus, they provide independent evidence for the timing of the uplift of the Tibetan Plateau during the Quaternary.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Li, Xinling UNSPECIFIED UNSPECIFIED UNSPECIFIED Hao, Qingzhen UNSPECIFIED orcid.org/0000-0002-6281-5817 UNSPECIFIED Wei, Mingjian UNSPECIFIED UNSPECIFIED UNSPECIFIED Andreev, Andrei A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Junping UNSPECIFIED orcid.org/0000-0002-1232-2141 UNSPECIFIED Tian, Yanyan UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, Xiaolei UNSPECIFIED UNSPECIFIED UNSPECIFIED Cai, Maotang UNSPECIFIED UNSPECIFIED UNSPECIFIED Hu, Jianmin UNSPECIFIED UNSPECIFIED UNSPECIFIED Shi, Wei UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-207729
DOI:	10.1038/s41598-017-16915-z
Journal or Publication Title:	Sci Rep
Volume:	7
Date:	2017
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LOESS PLATEAU; ASIAN ARIDIFICATION; SURFACE POLLEN; NORTHERN CHINA; CLIMATE; MONSOON; EVOLUTION; DESERT; MA; VEGETATION Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/20772