EVOLUTIONARY - GENETIC ASPECTS OF SOIL FORMATION OF GRAY-BROWN SOILS OF THE DESERT ZONE OF UZBEKISTAN AND THE POSSIBILITY OF THEIR USE
Based on soil and geographical work on the Ustyurt Plateau and the Malikchul Plain, the territory of the desert zone is divided into northern Central Kazakhstan with subboreal features and southern Turan desert subzones with a subtropical climate. The zonal climatic features of the desert zone, expressed in the difference in the hydrothermal regime of these territories, caused differences in morphogenetic, chemical properties, organic matter content and its group composition. The mass of the root system under various plant communities was studied. Depending on the zonal-climatic conditions, light brown, gray-brown northern soils are formed on the territory of the temperate subboreal desert, forming bio-soil complexity, and gray-brown and underdeveloped gray-brown soils of various altitude levels are forming on the south-warm subtropical desert subzone combinations. Efficiency of pasture land use can be created by introducing a rational system of exploitation and finding water sources for their irrigation.