TY JOUR TI COMPARATIVE ANALYSIS OF HEAVY METALS ACCUMULATION IN THE NEEDLE OF INTRODUCED SPECIES IN THE GREEN ZONE OF NUR-SULTAN KW heavy metals KW introduced species KW Siberian spruce KW black spruce KW assimilation apparatus JO Forestry Engineering Journal AU Kabanova, S.A. AU Danchenko, M.A. AU Scott, S.A. AU Kabanov, A.N. AU Cvetkova, N.V. AU Kirillov, V.Y. PY 2022 IS 11 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov