TY JOUR TI Assessment of the silvicultural efficiency of thinning cuttings in the northern taiga forest region KW thinning KW dynamics KW forestry effectiveness KW timber stock KW mixed pine stands JO Forestry Engineering Journal AU Bogdanov, A.P. AU Ilintsev, A.S. AU Tret'yakov, S.V. AU Koptev, S.V. PY 2025 IS 15 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov