ЗАПАСЫ УГЛЕРОДА В ОРГАНИЧЕСКОМ ВЕЩЕСТВЕ ПОСЛЕПОЖАРНЫХ СОСНЯКОВ ЮГО-ЗАПАДНОГО ПРИБАЙКАЛЬЯ*

ISSN: 0024-1148 Russian Journal of Forest Science. 2012, No. 1, pp. 3-13 CARBON RESERVES IN ORGANIC MATTER OF POSTFI RE PINE FORESTS IN SOUTHWESTERN LAKE BAIKAL BASIN Vedrova E.F. ,  Evdokimenko M.D. ,  Bezkorovainaya I.N. ,  Mukhortova L.V. ,  Cherednikova Yu. S. Forest Institute, Siberian Branch of the Russian Academy of Sciences (FI SB RAS): Academgorodok 50 bldg. 28, Krasnoyarsk, 660036 E-mail: biosoil@forest.akadem.ru Received: 1 april 2011 Changes in the organic matter mass and composition in the phytomass and soil of pine forests under the infl uence of fi res of high and medium intensity are discussed. Fires of medium intensity were shown not to affect drastically the carbon pool in pine forests of the subtaiga forest-steppe and taiga altitudinal complexes in southwestern Lake Baikal basin. In the maturing pine forest, 5 years after the fi re of high intensity, the carbon pool remained by 20% lower than that in the unburned forest. The carbon mass in the stand phytomass, as compared to the control variant, decreased by 18%; in the ground cover, it was 63% smaller. In the easily mineralizable fraction of organic matter, the carbon reserves became lower due to burning down of coarse wood residues (by 64%) and root detritus (by 50% relative to the control stand). KEYWORDS: