Content and distribution of fluorine in soil catenas of the Kulunda Plain
B. A. SMOLENTSEV, G. A. KONARBAEVA, N. V. ELIZAROV, V. V. POPOV
Institute of Soil Science and Agrochemistry of SB RAS, Novosibirsk, Russia
Keywords: soil catena, solonetzes, Kulunda Plain, total fluorine, water-soluble fluorine
Abstract
The content and distribution of fluorine in two soil catenas located in the basins of the Burla and Kulunda rivers on the territory of the Kulunda Plain was studied. The use of the catenas method made it possible to compare the content of fluorine in soils of different geochemical relief positions, in zonal and intrazonal soils. It is not just the presence of fluorine in soils that matters, but its concentration, which underlies the dual nature of his biological role - positive or negative, which requires the introduction of sanitary and hygienic standards for his content. In the studied soils, the total content of fluorine varies from 13.9 to 711.03 mg/kg, the water-soluble form varies from 0 to 34.65 mg/kg. It was found that in saline solonetzes developing in superaquatic landscapes, the content of total and water-soluble fluorine have, respectively, ecologically critical and unacceptable concentrations, therefore, the use of these soils in agricultural production is associated with the risk of accumulation of excess amounts of fluorine in the body of animals and humans.
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