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A record of late Holocene precipitation on the Central Tibetan Plateau inferred from varved lake sediments

文献类型：期刊论文

作者Ji, Kejia2,3; Zhu, Erlei3; Chu, Guoqiang1; Aquino-Lopez, Marco A.4; Hou, Juzhi3
刊名JOURNAL OF PALEOLIMNOLOGY
出版日期2021-08-17
页码14
ISSN号0921-2728
关键词Tibetan Plateau Varve chronology Jiang Co Precipitation
DOI10.1007/s10933-021-00215-8
英文摘要Lake sediments on the Tibetan Plateau are important natural archives for studying past climate and environment changes. A precise sediment core chronology is a fundamental prerequisite for reconstructing past climate and environment changes. However, radiocarbon dates on bulk carbon in lake sediment cores are subject to "old carbon" reservoir effects, which can cause problems when trying to establish depth-age relations for sediment cores, especially those from the Tibetan Plateau (TP). Here we present a varve chronology that spans the last similar to 2000 years, from Jiang Co, on the central TP. Clastic-biogenic varves in Jiang Co sediments are comprised of two laminae, a coarse-grain and a fine-grain layer, observed by petrographic microscope and Electron Probe Micro Analyzer. The varve chronology is supported by Pb-210 and Cs-137 dating and was used to estimate the radiocarbon reservoir ages for the past similar to 2000 years. The thickness percentage of the coarse-grain layer within a single varve was used as a proxy for summer precipitation amount, as coarse grains are transported mainly by runoff. During the past 2000 years, the precipitation record inferred from Jiang Co sediments shows centennial-scale fluctuations that are consistent with other records from the region. The varve chronology from Jiang Co provided a valuable opportunity to estimate the "old carbon" reservoir effect in Jiang Co and reconstruct past precipitation on the Tibetan Plateau.
WOS关键词CLIMATE-CHANGE ; PB-210 ; CHINA ; AGE ; GEOCHRONOLOGY ; CHRONOLOGIES ; VARIABILITY ; CALIBRATION ; MONSOON ; BASIN
资助项目National Natural Science Foundation of China[41772178] ; National Natural Science Foundation of China[91747207] ; National Key Research & Development Program of China[2018YFA0606400] ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC )[41988101]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
语种英语
出版者SPRINGER
WOS记录号WOS:000685597600001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research & Development Program of China ; National Key Research & Development Program of China ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research & Development Program of China ; National Key Research & Development Program of China ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research & Development Program of China ; National Key Research & Development Program of China ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research & Development Program of China ; National Key Research & Development Program of China ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC ) ; Basic Science Center for Tibetan Plateau Earth System (BSCTPES, NSFC )
源URL[http://ir.iggcas.ac.cn/handle/132A11/101880]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Hou, Juzhi
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resource, Grp Alpine Paleoecol & Human Adaptat ALPHA, Beijing 100101, Peoples R China
4.Math Res Ctr CIMAT, Guanajuato, Mexico
推荐引用方式
GB/T 7714		 Ji, Kejia,Zhu, Erlei,Chu, Guoqiang,et al. A record of late Holocene precipitation on the Central Tibetan Plateau inferred from varved lake sediments[J]. JOURNAL OF PALEOLIMNOLOGY,2021:14.
APA Ji, Kejia,Zhu, Erlei,Chu, Guoqiang,Aquino-Lopez, Marco A.,&Hou, Juzhi.(2021).A record of late Holocene precipitation on the Central Tibetan Plateau inferred from varved lake sediments.JOURNAL OF PALEOLIMNOLOGY,14.
MLA Ji, Kejia,et al."A record of late Holocene precipitation on the Central Tibetan Plateau inferred from varved lake sediments".JOURNAL OF PALEOLIMNOLOGY (2021):14.

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来源：地质与地球物理研究所

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