TY JOUR TI GIS project development of the Chernozemelskaya irrigation system of the Republic of Kalmykia for the substantiation of reclamation measures KW arid area KW water resources KW land reclamation system KW digital database KW geoinformation technologies KW irrigation KW degradation KW integrated land reclamation JO INTERNATIONAL AGRICULTURAL JOURNAL AU Dedova, A.A. AU Shirokova, V.A. AU Dedova, E.B. AU Shabanov, R.M. PY 2024 IS 0 PB Electronic science