TY JOUR TI ANALYSIS OF AGRICULTURAL LAND USE TO IMPROVE PRODUCTION EFFICIENCY KW land use KW agrolandscape KW ecological state KW intensive use KW restoration KW conservation JO Vestnik of Omsk SAU AU NEKRASOVA, E.V. AU NEKRASOVA, E.V. AU FRIZEN, Y.V. PY 2026 IS 61 PB FSBEI HE Omsk SAU