Transformation of the Ground Cover after Surface Fires and Estimation of Pyrogenic Carbon Emissions in the Dark-Coniferous Forests of Central Siberia
E. A. KUKAVSKAYA1, L. V. BURYAK2,3, O. P. KALENSKAYA2, D. S. ZARUBIN2,3
1V. N. Sukachev Institute of Forest, SB RAS, 660036, Krasnoyarsk, Akademgorodok, 50/28
2Siberian State Technological University, 660049, Krasnoyarsk, Mira ave., 82
3Central Siberian State Nature Biosphere Reserve, 663246, Bor, Gribnaya str., 1
Keywords: средняя тайга, кедровые насаждения, запасы и структура напочвенных горючих материалов, устойчивые и беглые пожары, показатель пожарной опасности по погоде, полнота сгорания, эмиссия углерода, Siberian pine stands, central taiga, loads and structure of ground fuels, steady and fast-moving fires, weather fire danger index, fuel consumption, carbon emissions
Abstract
Ground fuel loads and structure in the dark-coniferous forests with the dominance of Siberian pine were studied in the Central Siberian State Nature Biosphere Reserve located in the middle taiga of Central Siberia. The impacts of surface fires of various forms and severities were studied. Low- to moderate-severity fires were found to decrease ground fuel loads from 35-49 t/ha to 26-28 t/ha, while moderate- to high-severity fires - to 17-18 t/ha. Consumption of down woody debris varied from 3 to 29 t/ha depending on the prefire fuel characteristics, fire form and severity. Steady fires spreading under the fire danger index PV-1 of 3919 ± 482 resulted in carbon emissions of 14.0 tC/ha and 24.6 tC/ha due to fires of low- to moderate- and moderate- to high-severities, respectively. The lowest carbon emissions (10.1 tC/ha) were estimated to be due to fast-moving fire spreading under PV-1 of 1167±386.
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