Determination of dependence between physical clay content in sod-podzolic soils and specific activity of 40K natural isotope | Определение зависимости между содержанием физической глины в дерново-подзолистых почвах и удельной активностью естественного изотопа 40К
2010
Lozovaya, Z.V., National Academy of Sciences (Belarus). Institute of Radiology | Ageets, V.Yu., National Academy of Sciences, Minsk (Belarus). Central Botanical Garden
In the conditions of the Republic of Belarus there was analyzed the dependence between physical clay content in sod-podzolic soil and specific activity of 40K natural isotope. There was described a new method of determination of soil belonging to a particular soil type in the conditions of identification of the natural isotope K40. Experiments were realized on sod-podzolic automorphous and half-hydromorphic soils of natural and cultural agrocoenosis polluted with 137Cs and 90Sr after the Chernobyl disaster. The pollution density of 137Cs was from 313 to 2480 kBq/m2 and 90Sr – from 2 to 63 kBq/m2. Research results showed that soil texture content influenced on radionuclide fixation. Radionuclide entering into plants from sod-podzolic loamy soils was in 1,5-2,0 times and more lower in comparison with radionuclide entering from sod-podzolic sandy soils. The highest base exchange capacity of 137Cs, 90Sr and 40K was typical for the fraction of physical clay with the minimal particle size of 0,01mm. There was marked a close correlation connection between natural isotope 40K and a content of physical clay.
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