Warm climate under high CO2 level in the early Pleistocene based on a leaf fossil assemblage in central Japan
Wang, Yuqing1; Momohara, Arata1; Ito, Ayano2; Fukushima, Tohru4; Huang, Yong-Jiang1,3
2018-11-01
发表期刊REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN0034-6667
卷号258页码:146-153
摘要

The atmospheric levels of CO2, a greenhouse gas, are closely related to global change, and investigation of historic CO2 levels can help achieve a better understanding of the global climate change in the deep past. While stomatal frequency of fossil leaves has been recurrently used for palaeo-CO2 reconstruction, simultaneous investigation of both palaeo-temperature and palaeo-CO2 using the same fossil assemblage has been rarely performed. In this study, based on the stomatal analyses of Quercus gilva from a leaf bed in the Sayama Formation (1.66-1.55 Ma) in central Japan, we estimated the palaeo-CO2 values in an interglacial stage (MIS 57 or 55) at 36.41 2.58 pa, which is generally higher than the previously reported data from early Pleistocene. To understand the climate under this high CO2 level, we also calculated the mean annual temperature (MAT) based on the same leaf assemblage using the leaf margin analysis (LMA) approach. The calculated MAT was 11.0 degrees C, suggesting a relatively warm climate during the interglacial stage. Our results revealed a warm environment under high CO2 level during the early Pleistocene, which demonstrates the vital role of CO2 in controlling the early Pleistocene interglacial temperature. (C) 2018 Elsevier B.V. All rights reserved.

关键词Global Warming Early Pleistocene Stomata Density Interglacial Stage Leaf Margin Analysis Palaeo-temperature
收录类别SCI
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/64313
专题中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者Momohara, Arata
作者单位1.Chiba Univ, Grad Sch Hort, 648 Matsudo, Chiba 2718510, Japan
2.Ibaraki Nat Museum, 700 Osaki, Bando, Ibaraki 306022, Japan
3.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
4.Musashino Sch Paleontol, 3-20-7 Chuo, Tokyo 2080003, Japan
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GB/T 7714
Wang, Yuqing,Momohara, Arata,Ito, Ayano,et al. Warm climate under high CO2 level in the early Pleistocene based on a leaf fossil assemblage in central Japan[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2018,258:146-153.
APA Wang, Yuqing,Momohara, Arata,Ito, Ayano,Fukushima, Tohru,&Huang, Yong-Jiang.(2018).Warm climate under high CO2 level in the early Pleistocene based on a leaf fossil assemblage in central Japan.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,258,146-153.
MLA Wang, Yuqing,et al."Warm climate under high CO2 level in the early Pleistocene based on a leaf fossil assemblage in central Japan".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 258(2018):146-153.
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