TY JOUR TI The role of introduction in forming the adventive flora fraction at Voronezh region protected nature reserve KW adventive fraction of flora KW introduction KW protected areas (PAS) KW the natural reserve Fund (NRF) KW Voronezh region. JO Forestry Engineering Journal AU Lepeshkina , L.. AU Starodubtseva, E.. AU Grigorevskaya, A.. AU Lisova, O.. PY 2016 IS 6 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov