TY CONF TI SANITARY PROTECTIVE ZONES IN THE CONTEXT OF COMPLEX POLLUTION OF THE URBAN ENVIRONMENT: PROBLEMS OF EFFECTIVENESS AND WAYS OF SYSTEMIC OPTIMIZATION KW pollution KW sanitary protection zones KW filtering and insulating strip structures KW plant assortment KW urban environment JO All-Russian Youth Conference dedicated to International Earth Day 2026 AU Kartashov, E.K. AU Kartashova, N.P. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov