TY CONF TI THE STATE OF PINE CROPS OF ROSSOSHANSKOE FORESTRY OF VORONEZH REGION AND MEASURES TO IMPROVE THEIR PRODUCTIVITY KW pine stands KW natural thickness grades KW diameter structure KW productivity JO FOREST ECOSYSTEMS IN A CHANGING CLIMATE: PROBLEMS AND PROSPECTS AU Shestakova, A.I. AU Revin, A.I. AU Tuvyshkina, M.A. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov