Temperature reconstructions for the last 1.74-Ma on the eastern Tibetan Plateau based on a novel pollen-based quantitative method

doi:10.1016/j.gloplacha.2021.103433

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖地质与环境实验室

	Temperature reconstructions for the last 1.74-Ma on the eastern Tibetan Plateau based on a novel pollen-based quantitative method
	Zhao, Yan; Liang, Chen; Cui, Qiaoyu; Qin, Feng; Zheng, Zhuo; Xiao, Xiayun; Ma, Chunmei; Felde, Vivian A.; Liu, Yaoliang; Li, Quan
刊名	GLOBAL AND PLANETARY CHANGE
	2021-04
卷号	199
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2021.103433
英文摘要	Terrestrial palaeo-temperature data are of great value in improving our understanding of past climate and they provide a basis for evaluating climate simulations. Such data are, however, poorly constrained for long time scales. In addition to the scarcity of high-quality continuous time-series, finding proxies with a clear response to past temperature changes and developing appropriate reconstruction methods are major challenges. We present a new and robust method ? Locally-weighted Weighted-average partial least squares (LW-WAPLS) to reconstruct quantitative temperature changes based on a high-resolution 1.74-Ma pollen record from the Zoige Basin on the eastern Tibetan Plateau, where the vegetation today is mainly controlled by temperature. The reconstructed mean annual (MAT) and warmest month (MTWM) temperatures reveal a general cooling trend with two major shifts at-1.54 and 0.62 Ma BP, and regular glacial-interglacial variability ranging from4 to 2 ?C and from 8 to 16 ?C, respectively. They indicate-4?5 ?C (MAT) and 5?6 ?C (MTWM) magnitudes of glacial-interglacial temperatures. Both statistical and ecological evaluations validate the reliability of the reconstructions. The reconstructions provide important insights into the spatial aspects of long-term terrestrial temperature change. LW-WAPLS shows advantages over both the traditional modern analogue technique and non-linear transfer-function methodologies such as WAPLS for reconstructing the broad-scale climate changes for the Zoige Basin, by combining the strength of both methods. The LW-WAPLS approach potentially provides a robust tool to develop pollen-based climate reconstructions over long time-scales.Superscript/Subscript Available
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34228]
专题	青海盐湖研究所_盐湖地质与环境实验室
推荐引用方式 GB/T 7714	Zhao, Yan,Liang, Chen,Cui, Qiaoyu,et al. Temperature reconstructions for the last 1.74-Ma on the eastern Tibetan Plateau based on a novel pollen-based quantitative method[J]. GLOBAL AND PLANETARY CHANGE,2021,199.
APA	Zhao, Yan.,Liang, Chen.,Cui, Qiaoyu.,Qin, Feng.,Zheng, Zhuo.,...&Birks, H. John B..(2021).Temperature reconstructions for the last 1.74-Ma on the eastern Tibetan Plateau based on a novel pollen-based quantitative method.GLOBAL AND PLANETARY CHANGE,199.
MLA	Zhao, Yan,et al."Temperature reconstructions for the last 1.74-Ma on the eastern Tibetan Plateau based on a novel pollen-based quantitative method".GLOBAL AND PLANETARY CHANGE 199(2021).