DOI: 10.1073/pnas.0708588105
论文题名: The impact of Miocene atmospheric carbon dioxide fluctuations on climate and the evolution of terrestrial ecosystems
作者: Kürschner W.M. ; Kvaček Z. ; Dilcher D.L.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2008
卷: 105, 期: 2 起始页码: 449
结束页码: 453
语种: 英语
英文关键词: Atmospheric CO2
; C 4 plants
; Fossil plants
; Paleoclimates
; Stomata
Scopus关键词: carbon dioxide
; article
; atmosphere
; atmospheric pressure
; Cenozoic
; climate
; ecosystem
; environmental factor
; fossil
; fossil plant
; grassland
; herbivore
; image analysis
; land biome
; Miocene
; nonhuman
; plant leaf
; plant stoma
; priority journal
; terrestrial species
; vegetation
; Animals
; Biomass
; Carbon Dioxide
; Climate
; Diet
; Ecosystem
; Environmental Monitoring
; Evolution
; Fossils
; Geology
; Mammals
; Models, Biological
; Plants
; Temperature
; Time
; Time Factors
; Equidae
英文摘要: The Miocene is characterized by a series of key climatic events that led to the founding of the late Cenozoic icehouse mode and the dawn of modern biota. The processes that caused these developments, and particularly the role of atmospheric CO2 as a forcing factor, are poorly understood. Here we present a CO2 record based on stomatal frequency data from multiple tree species. Our data show striking CO2 fluctuations of ≈600-300 parts per million by volume (ppmv). Periods of low CO2 are contemporaneous with major glaciations, whereas elevated CO2 of 500 ppmv coincides with the climatic optimum in the Miocene. Our data point to a long-term coupling between atmospheric CO2 and climate. Major changes in Miocene terrestrial ecosystems, such as the expansion of grasslands and radiations among terrestrial herbivores such as horses, can be linked to these marked fluctuations in CO2. © 2008 by The National Academy of Sciences of the USA. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162173
Appears in Collections: 气候变化与战略
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作者单位: Kürschner, W.M., Institute of Environmental Biology, Department of Palaeoecology, Utrecht University, Budapestlaan 4, 3584 CD, Utrecht, Netherlands; Kvaček, Z., Faculty of Natural Sciences, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic; Dilcher, D.L., Florida Museum of Natural History, University of Florida, Gainesville, FL 32611-7800, United States
Recommended Citation:
Kürschner W.M.,Kvaček Z.,Dilcher D.L.. The impact of Miocene atmospheric carbon dioxide fluctuations on climate and the evolution of terrestrial ecosystems[J]. Proceedings of the National Academy of Sciences of the United States of America,2008-01-01,105(2)