Geology, geography and global energy
Scientific and Technical Journal
EVOLUTION OF SOILS OF THE FLOWING ISLANDS OF KUIBYSHEV RESERVOIR
2019. №3, pp. 67-76
Kulagina Valentina I. - Ph. D. in Biology, Head of Laboratory, Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Kazan, 420087, Republic of Tatarstan, viksoil@mail.ru
Ryazanov Stanislav S. - Researcher, Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Kazan, 420087, Republic of Tatarstan, erydit@yandex.ru
Alexandrova Asel B. - Ph. D. in Biology, Senior Researcher, Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Kazan, 420087, Republic of Tatarstan, adabl@mail.ru
Sungatullina Lutsia M. - Senior Researcher, Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Kazan, 420087, Republic of Tatarstan, sunlyc@yandex.ru
Hisamova Alina M. - Junior Researcher, Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Kazan, 420087, Republic of Tatarstan, his.alina94@mail.ru
Rupova Elmira H. - Ph. D. in AgriculturРµ, Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Kazan, 420087, Republic of Tatarstan, elmira.rupova@mail.ru
The islands of flatland water reservoirs are environmentally and economically valuable objects, the stability and value of which is largely determined by their soil cover. The article considers evolutionary changes of soils under the flooding impact on the territory of reservoir's islands, which are unflooded fragments of the former Volga river floodplain. Pronounced changes of morphological soil properties altered the classification affiliation of soils. However, statistical analysis did not show any significant changes in the most of chemical and physicochemical properties of flooded and unflooded soils. Apparently, slow evolution of such properties as humus content, mobile phosphorus and potassium, is caused by unstable water level of the Kuybyshev reservoir. The differences between soil types were observed only in total nitrogen content. A possible result of the reservoir impact is also the predominance of alkaline soils over acidic soils in most soil groups.
Key words: аллювиальные почвы, эволюция почв, острова водохранилищ, оглеение, подтопление, содержание гумуса, реакция среды, насыщенность основаниями, морфологические признаки, содержание питательных веществ, физико-химические свойства, alluvial soils, soil evolutio
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