TY JOUR TI THE CHEMICAL PROPERTY CHANGE OF THE DRAINED PEAT SOILS UNDER THE FIRE FACTOR INFLUENCE KW peat fires KW pyrogenic formation KW ash KW sulfur KW calcium KW acid precipitation KW groundwater JO Bulletin of KSAU AU , .. AU , .. AU , .. PY 2014 IS PB Krasnoyarsk State Agrarian University