Influence of rehabilitation measures on Cs-137 uptake by crops from soils contaminated during the Chernobyl NPP accident

摘要

The dynamics of Cs-137 uptake by crops and the influence of rehabilitation measures on the accumulation of this radionuclide in agricultural products have been estimated by the example of southwestern regions of Bryansk oblast. In 20 yr after the Chernobyl NPP accident, three stages of a decrease in the concentration of Cs-137 in the crops can be distinguished. At present (in 15-20 yr after the accident), the rate of the decrease in the concentration of Cs-137 in some crops corresponds to the half-decay period of this radionuclide.