Release:Bulletin of Tyumen State University. Ecology (№12). 2013
About the author:Viktor A. Boyev, Cand. Biol. Sci., Associate Professor, Department of Geoecology, Institute of Mathematics, Science and Information Technologies, Tyumen State University
Abstract:The article presents the results of the research of selenium contentsin soils and crops in the south of Tyumen oblast. The patterns of selenium distribution in the soil of the region are discovered. Selenium is ascertained to concentratein the humic and illuvial layers of soil. Selenium distribution in the top layer (0-20 cm)of the soil is examined. Also it is found that selenium content in the top layer of soil is primarily determined by the content of humic substances. The highest selenium is found on the outskirts of Roschino airport (0.413 mg/kg), perhaps due to the anthropogenic influence. Selenium content in plants is determined by its biological peculiarities and the content of this element in the soil and it is connected such peculiarities of soil as acidity and the amount of humus. It has been determined that the large amountof selenium in oats found near Roschino airport is caused by high selenium content in the soil. It has been found that the content of selenium in the soils of the southof Tyumen region is biogeochemically normal (0.2–0.7 mg/kg). Selenium content in the plants of the south of Tyumen region is within the range from 0.182 mg/kg to 0.029 mg/kg that corresponds to its content in ecologically safe territories.
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