The problem of salinization activation in soils of the south of Eastern Siberia and Mongolia in connection with climate aridization

The influence of climate aridization on soil salinity in the basins of the south of Eastern Siberia and Mongolia is considered in the article. The data characterizing the climate aridity of the basins of the south of Eastern Siberia over 50 years are analyzed. In the south of Eastern Siberia from 1955 to 2015, the increase in air temperature was higher than in the whole world. In the basins of Tuva, the increase in air temperature was 2.5-3.7 оС; in the Minusinsk depression - 1.7-2.8 оС, in the basins of Buryatia - 1.5-1.8 оС; the coefficient of determination for moving averages over 20 years (R2) was 0.9-0.95, the changes are significant - Student's criterion 19-35. Changes in the aridity coefficient were in the range of 0.02-0.14; according to the Student criterion, they were significant (t = 7.4 - -22), while a decrease in aridization was observed in the Minusinsk depression and its growth in other regions. Thus, in general, for the studied regions, the multidirectionality of the processes of climate aridization has been ascertained...