DOI: 10.1111/gcb.12670
论文题名: Reconstructing atmospheric CO2 during the Plio-Pleistocene transition by fossil Typha
作者: Bai Y.-J. ; Chen L.-Q. ; Ranhotra P.S. ; Wang Q. ; Wang Y.-F. ; Li C.-S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 2 起始页码: 874
结束页码: 881
语种: 英语
英文关键词: North China
; Northern Hemisphere glaciation
; Paleo-CO2
; Plio-Pleistocene transition
; Stomatal index
; Typha orientalis
Scopus关键词: Typha
; Typha orientalis
; carbon dioxide
; atmosphere
; chemistry
; China
; climate change
; fossil
; plant stoma
; Typhaceae
; Atmosphere
; Carbon Dioxide
; China
; Climate Change
; Fossils
; Plant Stomata
; Typhaceae
英文摘要: The Earth has undergone a significant climate switch from greenhouse to icehouse during the Plio-Pleistocene transition (PPT) around 2.7-2.4 million years ago (Ma), marked by the intensification of the Northern Hemisphere glaciation (NHG) ~2.7 Ma. Evidence based on oceanic CO2 [(CO2)aq], supposed to be in close equilibrium with the atmospheric CO2 [(CO2)atm], suggests that the CO2 decline might drive such climate cooling. However, the rarity of direct evidence from [CO2]atm during the interval prevents determination of the atmospheric CO2 level and further assessment on the impact of its fluctuation. Here, we reconstruct the [CO2]atm level during 2.77-2.52 Ma based on a new developed proxy of stomatal index on Typha orientalis leaves from Shanxi, North China, and depict the first [CO2]atm curve over the past 5 Ma by using stomata-based [CO2]atm data. Comparisons of the terrestrial-based [CO2]atm and the existed marine-based [CO2]aq curves show a similar general trend but with different intensity of fluctuations. Our data reveal that the high peak of [CO2]atm occurred at 2.77-2.52 Ma with a lower [CO2]aq background. The subsequent sharp fall in [CO2]atm level might be responsible for the intensification of the NHG based on their general temporal synchronism. These findings shed a significant light for our understanding toward the [CO2]atm changes and its ecological impact since 5 Ma. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61747
Appears in Collections: 影响、适应和脆弱性
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作者单位: State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Science, China Agricultural University, Beijing, China; Birbal Sahni Institute of Palaeobotany, 53 University Road, Lucknow, India; Beijing Radiation Center, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Bai Y.-J.,Chen L.-Q.,Ranhotra P.S.,et al. Reconstructing atmospheric CO2 during the Plio-Pleistocene transition by fossil Typha[J]. Global Change Biology,2015-01-01,21(2)