Abstract
Methane fluxes were studied at two high-elevation oligotrophic peat bogs in the Ore Mts., Czech Republic. The Bukova dolina Bog was drained 15 years ago and 2 years ago was partly restored, whereas the Brumiste Bog is an intact peatland. Draining led to a change of vegetation structure, dominated by Molinia caerulea, Carex sp., and forestation by Norway spruce. Methane fluxes were measured monthly from April to November 2011 using a closed chamber. Temperature and presence of Carex were significant controls on methane fluxes. Peat depth, water table and the presence of other plant species had no significant effect on CH<sub>4</sub> emissions. Methane emissions ranged from 9 to 2700 mg/m<sup>2</sup>/day at the degraded and from 3 to 260 mg/m<sup>2</sup>/day at the intact bog. In general, the degraded peat bog emitted three times more methane compared to the intact peat bog, likely due to vegetation changes after long-term artificial draining.
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