TY JOUR TI EXPERT AND ANALYTICAL MODEL FOR ESTIMATION OF THE SOIL-ENVIRONMENTAL CONDITIONS IN KRASNOYARSK FOREST-STEPPE KW topsoil KW cation capacity KW soil acidity KW microelements KW minerals KW humus JO Bulletin of KSAU AU Tsuglenok, N.V. AU Khalanskaya, A.P. AU Nikulochkina, S.N. AU Ivchenko, V.K. PY 2012 IS PB Krasnoyarsk State Agrarian University