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METHANE EMISSION FROM TYPICAL PEATLAND LANDSCAPES OF WESTERN SIBERIA FOREST-STEPPE: FOR «STANDARD MODEL»BC5 // Tomsk State Pedagogical University Bulletin. 2009. Issue 11 (89). P. 198-206

Were measured spec1f1c methane fluxes that are representative for some peatland landscapes of Western S1beria forest-steppe. Spec1fic methane fluxes of forest-steppe eutroph1c m1res are very close to the same fluxes 1n subta1ga. Probability d1stribution of specific methane flux has following parameters: 1st quart1le/med1an/3rd quartile = 0.53/1.99/ 6.03 mgС GH4-m 2-h 1. Methane fluxes from bog lakes are close too, as in subta1ga they are estimated at tens and first hundreds of mgС GH4-m 2-h 1. Probability d1stribution of specific methane flux in riam: 0.00 / 0.09 / 0.21 mgС GH4-m 2-h 1. Annual methane em1ss1on from Western S1ber1a forest-steppe (estimated on the model Bc5) 1s 0.36 MtСH4/year that form 5 % reg1onal em1ss1on.

Keywords: methane emission, peatlands, Western Siberia, forest-steppe

Methane emission from middle taiga oligotrophic hollows of Western Siberia // Tomsk State Pedagogical University Bulletin. 2011. Issue 5 (107). P. 135-143

The paper presents experimental data on the methane emissions from West Siberian middle taiga oligotrophic hollows. Studied fluxes vary considerably from –0.08 to 58 mgС·m–2·h–1 (median is 2.76 mgС·m–2·h–1). Received data are consolidated in the scope of «standard model» Bc8 conception of methane emission. The model contains medians of CH4 flux distributions on seven different microlandscape types depending on their area and duration of methane emission in the respective zones. The total flux from the middle taiga oligotrophic hollows is 0.37 TgC or approximately 70 % of CH4 total flux from middle taiga mires. Version Bc8 of this model estimates the value of yearly CH4 emission from mires of whole Western Siberia as 2.93 TgC·yr–1 that accounts for around 2.4 % of the total mire methane emission.

Keywords: methane emission, mires, oligotrophic hollows, middle taiga, West Siberia