TY JOUR TI UNDERGROWTH PHYTOMASS IN THE SECONDARY DECIDUOUS STANDS OF THE MIDDLE TAIGA KW middle taiga KW forests of logging origin KW undergrowth KW phytomass JO Forestry Engineering Journal AU Pristova, T.A. PY 2020 IS 10 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov