Ability of Peat Soil to Oxidize Methane and Affect Temperature and Layer Deposition

作者：Szafranek Nakonieczna Anna^*; Bennicelli Riccardo Paolo

来源：Polish Journal of Environmental Studies, 2010, 19(4): 805-810.

• methane
• methane oxidation
• peat

Methane-oxidizing bacteria that inhabit peat play a significant role in carbon recycling. They reduce methane emissions to the atmosphere and supply carbon dioxide for photosynthesis. Our investigations aimed at determining the peat profile's (0-80 cm) ability to oxidize methane focused on the low peat Garbatowka Peatland in southwestern Poland. The experiments were carried out for four 20 cm layers. Samples of peat material of natural moisture were incubated in atmosphere enriched in 5% [v/v] CH(4) at 5, 10, and 20 degrees C. It was observed that methane oxidation (up to 145 mg CH(4) kg d.w.(-1) d(-1)) was most efficient at 20 degrees C. The highest methanotrophic activity at each tested temperature was observed for a different zone of the peat profile. At 5 degrees C the most active layer was 0-20 cm, at 10 degrees C 40-60 cm, while at 20 degrees C the deepest layer (60-80 cm) showed the highest methanotrophic activity.

• 出版日期2010