TY JOUR TI Influence of tree species composition of mature stand on natural regeneration of norway spruce KW Norway Spruce KW undergrowth KW number of undergrowth KW occurrence of undergrowth KW forest type KW relative density KW tree species composition of mature stand KW natural forest regeneration. JO Actual directions of scientific researches of the XXI century: theory and practice AU Beliaeva, N.V. AU Apanitsyna, A.. PY 2016 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov