METHANE AND CARBON DIOXIDE EVOLUTION FROM SUBARCTIC FENS
Rates of net methane and carbon dioxide evolution from four subarctic fens over one summer ranged from 0 to 7 mmol CH 4 m −2 d −1 and from 2 to 29 mmol CO 2 m 2 d −1 . Average molar ratios of carbon dioxide to methane ranged from 3 to 10. Partially because of the high spatial variability in evolutio...
| Published in: | Canadian Journal of Soil Science |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1987
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.4141/cjss87-007 https://cdnsciencepub.com/doi/pdf/10.4141/cjss87-007 |
| Summary: | Rates of net methane and carbon dioxide evolution from four subarctic fens over one summer ranged from 0 to 7 mmol CH 4 m −2 d −1 and from 2 to 29 mmol CO 2 m 2 d −1 . Average molar ratios of carbon dioxide to methane ranged from 3 to 10. Partially because of the high spatial variability in evolution rates, the temperature dependence of carbon dioxide was weak, but stronger for methane, with significant (P < 0.05) positive correlations at two sites, especially with peat temperatures. Annual flux of methane is estimated to be 0.1–0.6 g C m −2 which, although low compared to other wetlands, becomes a substantial atmospheric contribution when the large area occupied by subarctic peatlands is taken into account. Key words: Methane, carbon dioxide, peatlands, fens |
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