globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1717838115
论文题名:
Global peatland initiation driven by regionally asynchronous warming
作者: Morris P.J.; Swindles G.T.; Valdes P.J.; Ivanovic R.F.; Gregoire L.J.; Smith M.W.; Tarasov L.; Haywood A.M.; Bacon K.L.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2018
卷: 115, 期:19
起始页码: 4851
结束页码: 4856
语种: 英语
英文关键词: Basal date catalog ; Bioclimate ; Biogeography ; Deglaciation ; GCM
Scopus关键词: Article ; climate change ; environmental temperature ; greenhouse effect ; peatland ; precipitation ; priority journal ; season ; tropics ; biological model ; metabolism ; soil ; wetland ; carbon ; Carbon ; Global Warming ; Models, Biological ; Soil ; Wetlands
英文摘要: Widespread establishment of peatlands since the Last Glacial Maximum represents the activation of a globally important carbon sink, but the drivers of peat initiation are unclear. The role of climate in peat initiation is particularly poorly understood. We used a general circulation model to simulate local changes in climate during the initiation of 1,097 peatlands around the world. We find that peat initiation in deglaciated landscapes in both hemispheres was driven primarily by warming growing seasons, likely through enhanced plant productivity, rather than by any increase in effective precipitation. In Western Siberia, which remained ice-free throughout the last glacial period, the initiation of the world’s largest peatland complex was globally unique in that it was triggered by an increase in effective precipitation that inhibited soil respiration and allowed wetland plant communities to establish. Peat initiation in the tropics was only weakly related to climate change, and appears to have been driven primarily by nonclimatic mechanisms such as waterlogging due to tectonic subsidence. Our findings shed light on the genesis and Holocene climate space of one of the world’s most carbon-dense ecosystem types, with implications for understanding trajectories of ecological change under changing future climates. © 2018 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162299
Appears in Collections:气候变化与战略

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作者单位: Morris, P.J., School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom; Swindles, G.T., School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom; Valdes, P.J., School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, United Kingdom; Ivanovic, R.F., School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Gregoire, L.J., School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Smith, M.W., School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom; Tarasov, L., Department of Physics and Physical Oceanography, Memorial University, St. John’s, NL A1B 3X7, Canada; Haywood, A.M., School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Bacon, K.L., School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom

Recommended Citation:
Morris P.J.,Swindles G.T.,Valdes P.J.,et al. Global peatland initiation driven by regionally asynchronous warming[J]. Proceedings of the National Academy of Sciences of the United States of America,2018-01-01,115(19)
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