Influence of deflationary processes on the redistribution of 137Cs on arable land

Abstract

   The article presents data on the redistribution of ¹³⁷Cs as a result of deflationary processes. It has been established that along natural and anthropogenic obstacles, zones of accumulation of deflation material with an increased content of radionuclide are formed. On loose-sand soils, the difference in pollution density between the transport and accumulation zone reaches 30,0 %, on sandy soils – 45,0 %, on peat and peat-mineral soils – up to 37,5 %, and on residual peat and post-peat soils – 75,0 %. The zones of maximum accumulation of radionuclides correspond to the south-eastern parts of the fields, which is due to the prevailing wind directions. At the same time, it should be noted that the water regime plays a key role on organic soils, as they have zones of permanent overwetting, from the surface of which there is practically no transfer of soil particles.