Methane emission from bogs in the subtaiga of Western Siberia: The development of standard model

The methane emission from typical bog landscapes of the West Siberian subtaiga was studied in the summer-autumn of 2007-2010. The lowest specific fluxes (the median value is 0.08 mg C-CH4/m(2) per h) were recorded from ryams (raised bogs with dwarf shrub-sphagnum associations). From the ridges of the ridge-pool complexes, the fluxes were estimated at 0.49 mg C-CH4/m(2) per h; from the oligotrophic hollows, eutrophic bogs, floating lake mats, and mesotrophic quaking bogs, they were estimated at 2.68, 3.36, 4.53, and 4.98 mg C-CH4/m(2) per h, respectively. The maximal flux was determined from the lakes (the median is 17.98 mg C-CH4/m(2) per h). The regional assessment of the methane flux from the bogs of Western Siberia (2.93 Tg C-CH4/yr) was obtained on the basis of the authors' and literature data.