The Role of Floodplain Soils as a Barrier to Radionuclide Migration: An Example of the Techa–Iset' River System |
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Authors: | I. V. Molchanova E. N. Karavaeva L. N. Mikhailovskaya V. N. Pozolotina L. V. Lobanova |
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Affiliation: | (1) Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences, ul. Vos'mogo Marta 202, Yekaterinburg, 620144, Russia |
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Abstract: | The contents of 90Sr and 137Cs and the pattern of their redistribution in the soil and plant cover of floodplain ecosystems have been assessed. It is shown that the radionuclide distribution across the floodplain and along the river flow is determined by the formation of a barrier to their migration near the river channel, at which less mobile 137Cs accumulates. The soil and plant cover of the central floodplain are enriched with 90Sr. Differences in radionuclide migration in floodplain soils and their input into plants are determined by the relationship between the processes of their immobilization and migration with soil water. |
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Keywords: | radionuclides migration accumulation floodplain the Techa– Iset' river system radioactive wastes of the PO Mayak Radiochemical Plant |
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