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The buried soils of kurgans that have been constructed during the arid (2200-1800 years BC) and humid periods (1300-1400 years AD) in the Volga upland and the Caspian lowlands were studied. The paleosols buried 2200-1800 years BC are characterized by significant salinity and the accumulation of easily soluble salts and gypsum in the middle part of the soil profile and the formation of characteristic salt peaks at the depth of 80-120 cm. The chemical properties of medieval paleosols buried (1300-1400 years AD) indi...

This paper analyzes the changes of trends in temperature and precipitation in the Azov sea basin. The nature of this territory has undergone major changes. It is an important agricultural and industrial area. The paper considers changes in temperature and precipitation at stations located mainly in the steppe zone. Maximum, minimum, mean air temperature and precipitation trends on a seasonal and annual time scale are evaluated from data recorded at twelve weather stations in the basin of Azov sea during the period...