TY JOUR TI CHERNOZEM SOIL EVOLUTION IN MODERN ECOLOGICAL CONDITIONS OF THE OMSK REGION SOUTH KW total effect KW toxic salts KW hydro-morphism KW genetic horizon KW groundwater JO Bulletin of KSAU AU Bauer, Y.A. AU Reingard, Y.R. AU Ivleva, T.A. PY 2015 IS PB Krasnoyarsk State Agrarian University