TY JOUR TI FOREST FIRE INFLUENCE ON HUMIC AND ENERGY STATE OF THE BROWN SOILS IN PRIAMURYE KW brown soils KW forest fires KW influence KW humic acids KW soil energy stocks JO Bulletin of KSAU AU Purtova, L.N. AU Kostenkov, N.M. AU Bryanin, S.V. PY 2012 IS 0 PB Krasnoyarsk State Agrarian University