ISSN 1064-2293, Eurasian Soil Science, 2021, Vol. 54, No. 2, pp. 291–303. © Pleiades Publishing, Ltd., 2021. Russian Text © The Author(s), 2021, published in Pochvovedenie, 2021, No. 2, pp. 247–260. SOIL ЕROSION Erosion as a Factor of Transformation of Soil Radioactive Contamination in the Basin of the Shchekino Reservoir (Tula Region) V. N. Golosova, b, c, M. M. Ivanova, b, A. S. Tsyplenkova, M. A. Ivanovc, Y. Wakiyamad, A. V. Konoplevd, E. A. Konstantinovb, and N. N. Ivanovaa, * aLomonosov Moscow State University, Moscow, 119991 Russia bInstitute of Geography, Russian Academy of Sciences, Moscow, 119017 Russia cKazan Federal University, Kazan, 420008 Russia dInstitute of Environment Radioactivity, Fukushima University, Kanayagava, Fukushima, 1960–1296 Japan *e-mail:
[email protected] Received April 30, 2020; revised June 16, 2020; accepted July 13, 2020 Abstract—Redistribution of sediments and Chernobyl-derived 137Сs transported with them were estimated using a set of field methods and erosion model calculations for the Shchekino reservoir (Tula region) catch- ment, and changes in the contents of 137Сs in soils of various types that occurred over 1986–2018 were deter- mined. The rate of snowmelt soil erosion on arable land during this period has decreased by about a half in comparison with that in 1960–1985 due to a reduction in soil freezing depth in winter. The rainfall erosion rate increased by about a third between 1986–2003 due to an increase in the rainfall erosivity index; after that, it tended to decrease synchronously with a decrease in the rainfall erosivity. The total average annual soil loss related to water erosion varies in the range of 1.3–1.6 t ha–1 depending on the soil type.