TY JOUR TI POTENTIAL VEGETATION MAP MAKING BASED ON THE TOPOGRAPHIC VARIABLES KW potential vegetation KW mapping KW forecast KW modeling KW geobotanic mapping KW relief KW digital model KW growth place conditions JO Bulletin of KSAU AU Yakovleva, A.N. AU Omelko, A.M. PY 2012 IS PB Krasnoyarsk State Agrarian University