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[en] Within the research project ECP-5, the dynamics of radionuclides in automorphic forest soils within the 30-km-zone of Chernobyl and of hydromorphic forest soils in Belarus have been investigated. In upland forest soils, the lower layers of the organic horizons are characterized by the highest residence times for radiocesium and represent the largest pool for all radionuclides investigated. According to a preliminary estimate, radiocesium is more mobile compared to 125Sb, which in turn migrates faster than 60Co, 144Ce, and 154Eu. 106Ru shows the lowest mobility. With regard to radiocesium, hydromorphic soils exhibit migration rates and transfer factors from soil to trees, which by far exceed those in automorphic soils. Based on a two-component quasi-diffusional model the average bias of 137Cs in mesotrophic swamp soils was predicted. The activity concentrations of U, Pu, and Cs suggest that U and Pu were originally deposited as hot particles and that U is naturally accumulated in organic horizons
Source
Karaoglou, A.; Desmet, G.; Kelly, G.N.; Menzel, H.G. (European Commission, Brussels (Belgium)); European Commission, Brussels (Belgium); Ministry for Emergency, Minsk (Belarus); Ministry for Emergency, Kiev (Ukraine); Ministry for Emergency, Mocsow (Russian Federation). Funding organisation: European Commission, Brussels (Belgium); 1192 p; ISSN 1018-5593; 
; 1996; p. 225-228; 1. international conference on 'The radiological consequences of the Chernobyl accident'; Minsk (Belarus); 18-22 Mar 1996; 1 tab., 3 figs.
; 1996; p. 225-228; 1. international conference on 'The radiological consequences of the Chernobyl accident'; Minsk (Belarus); 18-22 Mar 1996; 1 tab., 3 figs.