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Environmental factors controlling methane emissions from peatlands in northern MinnesotaThe environmental factors affecting the emission of methane from peatlands were investigated by correlating CH4 emission data for two years, obtained from five different peatland ecosystems in northern Minnesota, with peat temperature, water table position, and degree of peat humification. The relationship obtained between the CH4 flux and these factors was compared to results from a field manipulation experiment in which the water table was artificially raised in three experimental plots within the driest peatland. It was found that peat temperature, water table position, and degree of peat humification explained 91 percent of the variance in log CH4 flux, successfully predicted annual CH4 emission from individual wetlands, and predicted the change in flux due to the water table manipulation. Raising the water table in the bog corrals by an average of 6 cm in autumn 1989 and 10 cm in summer 1990 increased CH4 emission by 2.5 and 2.2 times, respectively.
Document ID
19930061199
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dise, Nancy B.
(NASA Headquarters Washington, DC United States)
Gorham, Eville
(Minnesota Univ. Minneapolis, United States)
Verry, Elon S.
(USDA, Forest Service, Grand Rapids MN, United States)
Date Acquired
August 16, 2013
Publication Date
June 20, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: D6
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
93A45196
Distribution Limits
Public
Copyright
Other

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