TY JOUR TI PHYTOCOENOTIC CHARACTERISTIC OF ABORIGINAL AND DERIVATIVE DARK-CONIFEROUS FORESTS IN WESTERN SIBERIA KW species composition KW live vegetation cover KW forest restoration succession KW birch derivatives KW native silver fir KW phytomass KW Western Siberia JO Bulletin of KSAU AU Koshurnikova, N.N. AU Zlenko, L.V. PY 2013 IS PB Krasnoyarsk State Agrarian University