Solonetzic process in postagrogenic and postameliorative conditions of the Kamennaya Steppe area |
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Authors: | N B Khitrov Yu I Cheverdin I F Porotikov |
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Institution: | (1) Institute for biological problems of the cryolithozone, 41 Lenin Ave., Yakutsk, 677980, Russia;(2) Institute of permafrost, 36 Merzlotnaya Str., Yakutsk, 677010, Russia |
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Abstract: | The physicochemical conditions and morphological features of solonetzic process in soils of chernozemic solonetzic complexes
were studied in the area of solonetzic experimental station no. 1 in the Kamennaya Steppe area in 55 years after a single
application of ameliorative measures (earthening, gypsuming, and manuring) and cessation of the annual plowing. It was found
that the modern soil-forming factors favor the development of soil processes inherent in native chernozems and solonetzes
prior to their plowing and amelioration. They cause the restoration of the humus horizon in chernozems and the morphological
differentiation of solonetzes after the cessation of plowing. Active postameliorative and postagrogenic restoration of solonetzic
features is related to the preservation of the physicochemical conditions (the low concentration of salts and the presence
of exchangeable sodium) in the soil profile. The humus horizon of chernozems applied over the surface of solonetzes is characterized
by the appearance of solonetzic features under hydromorphic conditions. |
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