TY CONF TI FEATURES OF SPRUCE STAND FORMATION IN THE HIGH MOUNTAINS OF THE SOUTHERN URALS KW climate change KW Southern Urals KW Iremel mountain massif KW spruce stands KW ecotone KW forest regeneration KW uneven-aged stands JO FOREST ECOSYSTEMS IN A CHANGING CLIMATE: PROBLEMS AND PROSPECTS AU Balakin, D.S. AU Nagimov, Z.Y. AU Moiseev, P.A. AU Grigor'ev, A.A. AU V'yuhin, S.O. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov