TY JOUR TI CRITERIA FOR ASSESSING THE BIOGEOCENOTIC ECOLOGICAL FUNCTIONS OF SOILS UNDER TREE-SHRUB INTRODUCERS KW ecological functions of soils KW leached chernozem KW enzymatic activity of soils KW assessment of biogeocenotic ecological functions of soils JO Forestry Engineering Journal PY 2020 IS 10 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov