TY JOUR TI Agro-ecological characterization of chernozems of the Kamennaya steppe: the impact of vegetation and tillage KW Kamennaya steppe KW Chernozems KW vegetation KW humus KW heavy metals KW lead KW cadmium KW agro-ecological assessment KW carbon test site JO Forestry Engineering Journal AU Tikhonova, E.N. AU Gorbunova, N.S. AU Sheshnitsan, S.S. AU Odnoralov, G.A. PY 2023 IS 13 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov