Аннотация:Methane and carbon dioxide fluxes were obtained during measurement campaign Plotnikovo-2014 (N56°51.29’ E82° 50.91’) by using "Flux-NIES" automatic complex (chamber-based technique) in the warn season. Six plant communities on the bog’s surface were taken in comparison. Improvement precise method was used for investigation of analyzer's sensitivity and for calculating of the CO2 and CH4 fluxes.