DOI: 10.1002/2015GL063469
论文题名: Ebullition of methane from peatlands: Does peat act as a signal shredder?
作者: Ramirez J.A. ; Baird A.J. ; Coulthard T.J. ; Waddington J.M.
刊名: Geophysical Research Letters
ISSN: 0094-9099
EISSN: 1944-8830
出版年: 2015
卷: 42, 期: 9 起始页码: 3371
结束页码: 3379
语种: 英语
英文关键词: cellular automaton
; environmental forcing
; methane ebullition
; peatland
Scopus关键词: Atmospheric pressure
; Cellular automata
; Greenhouse gases
; Methane
; Mobile security
; Soils
; Wetlands
; Computer modeling
; Environmental forcing
; Forcings
; Gas storage
; Methane ebullition
; Peat soils
; Peatland
; Peat
; atmospheric pressure
; carbon emission
; methane
; peat soil
; peatland
; porosity
; simulation
英文摘要: Bubbling (ebullition) of greenhouse gases, particularly methane, from peatlands has been attributed to environmental forcings, such as changes in atmospheric pressure. However, observations from peat soils suggest that ebullition and environmental forcing may not always be correlated and that interactions between bubbles and the peat structure may be the cause of such decoupling. To investigate this possibility, we used a simple computer model (Model of Ebullition and Gas storAge) to simulate methane ebullition from a model peat. We found that lower porosity peat can store methane bubbles for lengthy periods of time, effectively buffering or moderating ebullition so that it no longer reflects bubble production signals. Our results suggest that peat structure may act as a "signal shredder" and needs to be taken into account when measuring and modeling ebullition. Key Points Link between environmental forcing and CH4 ebullition depends on peat structure Storage and transport processes within peat can "shred" CH4 production signals Small differences in peat porosity produce large differences in CH4 gas storage ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930480550&doi=10.1002%2f2015GL063469&partnerID=40&md5=84cd3f4dbc7ca5e27fdf4a0a539f0d26
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8715
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Geography, University of Leeds, Leeds, United Kingdom
Recommended Citation:
Ramirez J.A.,Baird A.J.,Coulthard T.J.,et al. Ebullition of methane from peatlands: Does peat act as a signal shredder?[J]. Geophysical Research Letters,2015-01-01,42(9).