TY JOUR TI FOREST FORMATION PROCESS IN EXTREMELY NARROW FOREST SHELTER BELT KW forest shelter belt KW forest formation process KW biogroups KW oak KW forest edge KW forest litter JO Forestry Engineering Journal AU Tunyakin, V.D. AU Rybalkina, N.V. AU Shenshin, L.M. PY 2022 IS 12 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov