Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Text] / E. A. Kukavskaya [et al.] // Environ. Res. Lett. - 2013. - Vol. 8, Is. 4. - Ст. 45034, DOI 10.1088/1748-9326/8/4/045034. - Cited References: 43. - The authors gratefully acknowledge financial support for this research from the National Aeronautics and Space Administration (NASA), the Land Cover Land Use Change (LCLUC) Science Program, the Russian Foundation for Basic Research (grant No. 12-04-31258), and the Russian Academy of Sciences, Siberian Branch. The authors would like to thank the three anonymous reviewers for their helpful comments and useful suggestions. . - 11. - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: The Russian boreal zone supports a huge terrestrial carbon pool. Moreover, it is a tremendous reservoir of wood products concentrated mainly in Siberia. The main natural disturbance in these forests is wildfire, which modifies the carbon budget and has potentially important climate feedbacks. In addition, both legal and illegal logging increase landscape complexity and affect burning conditions and fuel consumption. We investigated 100 individual sites with different histories of logging and fire on a total of 23 study areas in three different regions of Siberia to evaluate the impacts of fire and logging on fuel loads, carbon emissions, and tree regeneration in pine and larch forests. We found large variations of fire and logging effects among regions depending on growing conditions and type of logging activity. Logged areas in the Angara region had the highest surface and ground fuel loads (up to 135 t ha(-1)), mainly due to logging debris. This resulted in high carbon emissions where fires occurred on logged sites (up to 41 tC ha(-1)). The Shushenskoe/Minusinsk and Zabaikal regions are characterized by better slash removal and a smaller amount of carbon emitted to the atmosphere during fires. Illegal logging, which is widespread in the Zabaikal region, resulted in an increase in fire hazard and higher carbon emissions than legal logging. The highest fuel loads (on average 108 t ha(-1)) and carbon emissions (18-28 tC ha(-1)) in the Zabaikal region are on repeatedly burned unlogged sites where trees fell on the ground following the first fire event. Partial logging in the Shushenskoe/Minusinsk region has insufficient impact on stand density, tree mortality, and other forest conditions to substantially increase fire hazard or affect carbon stocks. Repeated fires on logged sites resulted in insufficient tree regeneration and transformation of forest to grasslands. We conclude that negative impacts of fire and logging on air quality, the carbon cycle, and ecosystem sustainability could be decreased by better slash removal in the Angara region, removal of trees killed by fire in the Zabaikal region, and tree planting after fires in drier conditions where natural regeneration is hampered by soil overheating and grass proliferation.

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Держатели документа:
[Kukavskaya, E. A.
Ivanova, G. A.
Zhila, S. V.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Buryak, L. V.
Kalenskaya, O. P.] Siberian State Technol Univ, Krasnoyarsk 660049, Russia
[Conard, S. G.] US Forest Serv, Rocky Mt Res Stn, Missoula, MT 59807 USA
[Conard, S. G.] George Mason Univ, Fairfax, VA 22030 USA
[McRae, D. J.] Canadian Forest Serv, Nat Resources Canada, Sault Ste Marie, ON P6A 2E5, Canada
ИЛ СО РАН

Доп.точки доступа:
Kukavskaya, E.A.; Buryak, L.V.; Ivanova, G.A.; Conard, S.G.; Kalenskaya, O.P.; Zhila, S.V.; McRae, D.J.; National Aeronautics and Space Administration (NASA); Land Cover Land Use Change (LCLUC) Science Program; Russian Foundation for Basic Research [12-04-31258]; Russian Academy of Sciences, Siberian Branch

/ E. G. Shvetsov, E. A. Kukavskaya, T. A. Shestakova [et al.] // Environ. Res. Lett. - 2021. - Vol. 16, Is. 11. - Ст. 115007, DOI 10.1088/1748-9326/ac2e37. - Cited References:38. - The study was supported by the Russian Foundation for Basic Research, Government of the Krasnoyarsk krai, the Krasnoyarsk Regional Foundation of Scientific and Scientific-Technical Support (Grant #20-44-242004), and by a private charitable trust that wishes to remain anonymous to avoid unsolicited funding requests. The trust has had no influence on the design, analysis, interpretation and documentation of this research. . - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: Forest disturbances are a critical environmental issue globally and within the boreal biome, yet detailed attribution and trends in disturbances are lacking for many Siberian regions. The Angara region located in the southern taiga of Central Siberia has experienced significant disturbances during the past several decades and is a hotspot of change in Eurasia. Here we estimated fire and logging disturbances using MODIS and Landsat data for the period 2002-2020 across the Angara region and analyzed the resulting trends. Average annual burned and logged area was about 220 and 31 thousand ha or 2 and 0.3% of the study area, respectively. In total, about 4.1 million ha (38% of the region) and 0.6 million ha (6% of the region) were disturbed by fires and logging, respectively. Spatial analysis showed that almost 50% of fires were ignited within 2 km of anthropogenic features such as settlements, roads and logged areas. Almost 5% of the Angara region was burned two or more times during the 19 years of observations. Improved and strictly-enforced conservation and management policies are required to halt continued forest degradation in the Angara region and similarly-affected boreal forests in Siberia.

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Держатели документа:
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Separate Subdiv FRC KSC SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79-10 Svobodny Ave, Krasnoyarsk 660041, Russia.
Woodwell Climate Res Ctr, Falmouth, MA 02540 USA.
Univ Toronto, Grad Dept Forestry, Toronto, ON M5S 2J5, Canada.

Доп.точки доступа:
Shvetsov, Evgeny G.; Kukavskaya, Elena A.; Shestakova, Tatiana A.; Laflamme, Jocelyne; Rogers, Brendan M.; Kukavskaya, Elena A; Russian Foundation for Basic Research, Government of the Krasnoyarsk krai; Krasnoyarsk Regional Foundation of Scientific and Scientific-Technical Support [20-44-242004]