Geology, geography and global energy
Scientific and Technical Journal
Volga delta soils: changes of the content of water-soluble salts in them in chaning ecological conditions
2015. №1, pp. 141-153
Valov Mikhail V. - Post-graduate student, Astrakhan State University, 1 Shaumyan sq., 414000, Astrakhan, Russian Federation, m.v.valov@mail.ru
Barmin Aleksandr N. - D.Sc. in Geography Professor Head of the department, Astrakhan State University, 1 Shaumyan sq., 414000, Astrakhan, Russian Federation, abarmin60@mail.ru
Iolin Mikhail M. - РЎ.Sc. in Geography Associate Professor Head of the department, Astrakhan State University, 1 Shaumyan sq., 414000, Astrakhan, Russian Federation, miolin76@mail.ru
Condition and dynamics of land ecosystems and biotic communities of river plains and deltas to the greatest extent depend on the hydrological regime of the territory and climatic factors. Therefore, regulation of runoff dams and creation of reservoirs on rivers in linked with the climate change cause profound changes in the status and dynamics of delta ecosystems and landscapes, which leads to various negative consequences. They are especially great in arid areas, where the most productive valley landscapes. According to the results of monitoring of soil, cover on the stationary profile in the delta of the Volga River from 1979 to 2011. The analysis of the dynamics of water-soluble salt ions in soil layer 0-15 cm meadows of low, medium and high levels in a changing climate and hydrological regime; calculated the total amount of salt toxicity and the ratio Cl / SO2-4 in the aqueous extract; calculated by decade dynamics mean annual air temperature, the average amount of temperature for the period with a temperature morethan 10 В°C, the long term average jearly precipitation, hydrothermal coefficient of Selyaninov G.T., change in the average amount of precipitation for the period with temperatures morethan 10 В°C, the volume of water flow in the alignment of the Volgograd hydroelectric power station, the percentage of flow for the second quarter of the total annual flow.
Key words: почвы, почвенный мониторинг, водорастворимые соли, изменения климата, гидрологический режим, дельта р. Волги, soil, soil monitoring, water-soluble salts thereof, climate change, hydrological regime, Volga Delta
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