气候变化领域集成服务门户(CCPortal): Temperature reconstructions for the last 1.74-Ma on the eastern Tibetan Plateau based on a novel pollen-based quantitative method

CCPortal

DOI	10.1016/j.gloplacha.2021.103433
	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; Zhang, Zhiyong; Herzschuh, Ulrike; Xu, Qinghai; Wei, Haicheng; Cai, Maotang; Cao, Xianyong; Guo, Zhengtang; Birks, H. John B.
通讯作者	Zhao, Y (通讯作者)
发表日期	2021
ISSN	0921-8181
EISSN	1872-6364
卷号	199
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
关键词	SUMMER MONSOON HOLOCENE VEGETATION ATMOSPHERIC CO2 GLACIAL MAXIMUM ZOIGE BASIN ICE CORE CLIMATE VARIABILITY PALEOLIMNOLOGY PLEISTOCENE
英文关键词	Tibetan Plateau; Pollen; LW-WAPLS; Glacial-interglacial scale; Temperature variability
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000632983300002
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260543
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]. 中国科学院青藏高原研究所,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).