TY CONF TI INFLUENCE OF SOIL CONDITIONS ON THE STATE OF OAK FORESTS OF THE VORONEZH STATE NATURE BIOSPHERE RESERVE KW oak groves KW productivity KW growth course KW soils KW morphological structure JO BIOLOGICAL AND FORESTRY AND ENVIRONMENTAL FUNDAMENTALS OF SUSTAINABILITY OF NATURAL AND ARTIFICIAL PHYTOCENOSES AU Tuvyshkina, M.A. AU Revin, A.I. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov