Influence of erosion-accumulative processes on 137Cs redistribution on slope lands
Keywords:
erosion processes, redistribution of 137Cs, eroded soils, reclaimed soils, specific activity of 137Cs, runoffAbstract
The article analyzes the change in the specific activity of 137Cs on slope lands under the influence of erosion processes for the period from 2015 to 2020. Quantitative indicators of the redistribution of 137Cs by erosion processes depend on the density of radioactive contamination of the territory, the intensity of liquid and solid runoff, vegetation cover, and land use. On eroded soils located on a slope, the specific activity of 137Cs in the arable layer is lower than on non-eroded and reclaimed soils by 5.7-49.0 and 32.0-70.3 %, respectively. The highest specific activity of 137Cs in soil is observed on reclaimed soils in the zone of sediment accumulation.
The influence of erosion-accumulative processes on the redistribution of radionuclides in the upper soil layer on arable slope lands must be considered when carrying out large-scale mapping of radionuclide-contaminated territories and the use of agricultural lands.