TY JOUR TI Optimization of the stands composition at creation of black alder forest plantations in the steppe zone of Russia KW black alder KW the floodplain ecotype KW the pure and mixed plantations KW features of growth KW optimum composition. JO Actual directions of scientific researches of the XXI century: theory and practice AU Turchina, T.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov