TY JOUR TI Age differences of pine stands as a factor of harmonization of the system of forest management activities in ribbon forests of the Altai Krai KW Scots pine (Pinus sylvestris L.) KW age generation KW uneven-aged forest stand KW ribbon forest KW forest type KW quality class KW area JO Forestry Engineering Journal AU Osipenko, A.E. AU Zalesov, S.V. PY 2023 IS 13 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov