DOI: 10.1002/grl.50501
论文题名: The importance of ebullition as a mechanism of methane (CH4) loss to the atmosphere in a northern peatland
作者: Stamp I. ; Baird A.J. ; Heppell C.M.
刊名: Geophysical Research Letters
ISSN: 0094-9009
EISSN: 1944-8740
出版年: 2013
卷: 40, 期: 10 起始页码: 2087
结束页码: 2090
语种: 英语
英文关键词: ebullition
; methane flux
; peatlands
; sampling error
Scopus关键词: ebullition
; Flux estimation
; Methane fluxes
; Microhabitats
; Peat land
; Sampling errors
; Small Sample Size
; Water tables
; Ecosystems
; Groundwater
; Methane
; Vapors
; Wetlands
; data set
; flux measurement
; methane
; microhabitat
; oxidation
; peatland
; sedge
; spatiotemporal analysis
; water table
; Sphagnum
英文摘要: We measured the escape of methane-containing gas bubbles to the water table in two microhabitats (muddy hollows and Sphagnum-plus-sedge lawns) in a raised bog in West Wales, typical of many northern peatlands. Our study was unusual in its degree of replication (14 gas traps in each microhabitat). Seasonally integrated bubble loss of CH4 to the water table did not differ significantly between microhabitats. After applying an oxidation correction to give CH4 fluxes to the atmosphere, the microhabitats still did not differ. Our results suggest that ebullition is an important mechanism of CH 4 loss to the atmosphere, with mean summer rates of 11.7 mg CH 4 m-2 d-1 (muddy hollows) and 6.8 mg CH 4 m-2 d-1 (Sphagnum-plus-sedge lawns). Our data show that the process is spatially and temporally very variable, and that the small sample sizes of many studies (e.g., n = 5) may lead to considerable errors in flux estimation. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879915629&doi=10.1002%2fgrl.50501&partnerID=40&md5=ef8e60be5e5b89c0b4ec7fdba3e70deb
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6273
Appears in Collections: 气候减缓与适应
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作者单位: School of Geography, Queen Mary University of London, London, United Kingdom
Recommended Citation:
Stamp I.,Baird A.J.,Heppell C.M.. The importance of ebullition as a mechanism of methane (CH4) loss to the atmosphere in a northern peatland[J]. Geophysical Research Letters,2013-01-01,40(10).