The main results of multi-year soil-hydrological studies in Ishim steppe (West Siberia, Russia)

Abstract

The main features of the Ishim plain steppe zone nature-meliorative conditions reflected, the assessment of the physical, water-physical properties and salinity of the Ishim steppe soils in the mid-1980sfrom the point of perspective irrigation given. The specificity of the Ishim-Irtysh steppe interfluve soil and soil strata hydrological state during the "half cycles" years with increasing and decreasing atmospheric moistening of the growing season shown. The reasons and mechanisms of the Ishim steppe upland soils water regime dynamism during the second half of the 20th century and at the beginning of the 21st century presented. The first results of a comparison of the Ishim upland soils morphology, recorded in 1986 and 2018, given. Taking into account the results of many years study, the main task of further research in the Ishim steppe is to establish the dynamics of the hydrological state and properties of the soil during the beginning of the next “half cycle” of years with decreasing atmospheric moisture.