Articles | Volume 14, issue 7
Biogeosciences, 14, 1947–1967, 2017
https://doi.org/10.5194/bg-14-1947-2017
Biogeosciences, 14, 1947–1967, 2017
https://doi.org/10.5194/bg-14-1947-2017
Research article
10 Apr 2017
Research article | 10 Apr 2017

Methane exchange at the peatland forest floor – automatic chamber system exposes the dynamics of small fluxes

Mika Korkiakoski et al.

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Cited articles

Alm, J., Saarnio, S., Nykänen, H., Silvola, J., and Martikainen, P. J.: Winter CO2, CH4 and N2O fluxes on some natural and drained boreal peatlands, Biogeochemistry, 44, 163–186, https://doi.org/10.1023/A:1006074606204, 1999.
Alm, J., Shurpali, N., Tuittila, E.-S., Laurila, T., Maljanen, M., Saarnio, S., and Minkkinen, K.: Methods for determining emission factors for the use of peat and peatlands – flux measurements and modelling, Boreal Environ. Res., 12, 85–100, 2007.
Anthony, W. H., Hutchinson, G. L., and Livingston, G. P.: Chamber measurements of soil-atmosphere gas exchange: linear vs. diffusion-based flux models, Soil Sci. Soc. Am. J., 59, 1308–1310, https://doi.org/10.2136/sssaj1995.03615995005900050015x, 1995.
Bellisario, L. M., Bubier, J. L., Moore, T. R., and Chanton, J. P.: Controls on CH4 emissions from a northern peatland, Global Biogeochem. Cy., 13, 81–91, https://doi.org/10.1029/1998GB900021, 1999.
Bergier, I., Rech, R., Monteiro, H., and Soriano, E.: User effects on chamber nitrous oxide emissions from oxisol soils in no-tillage maize fertirrigated with anaerobically digested swine manure, Environment and Natural Resources Research, 3, 1–11, https://doi.org/10.5539/enrr.v3n4p1, 2013.
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We measured methane exchange rates at the forest floor of a nutrient-rich drained peatland in southern Finland. The forest floor acted mainly as a small methane sink, but emission peaks were occasionally observed during spring and rainfall events. The strength of the sink correlated best with groundwater level and soil temperatures at 20 and 30 cm depths. Diurnal variations were also observed but they were caused by changes in ambient wind speed and not by biological processes.
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