TY JOUR TI FORMATION OF THE GREEN FRAMEWORK OF THE CITY OF KOLTUSHI LENINGRAD REGION KW natural resource potential KW green framework KW master plan KW "Koltušskie Heights" KW unique natural landscape JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Perkova, M.V. AU Bobylev, S.Y. AU Ladik, E.I. AU Gracheva, A.A. AU Shchapov, D.V. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov