Since the entry of transuranium elements (TUE) into the environment, the 241Am content in different ecological system objects continues to increase as a result of 241Pu beta decay. The ionizing radiation of these isotopes and their impact on the ecological situation in the propagation areas give rise to grave concern. The soil contamination with TUE radionuclides in Ukraine has stemmed mainly from two sources: global fallouts and Chernobyl nuclear power plant (NPP) accident. The ChNPP accident has led to nonuniform contamination with transuranium radionuclides, including Pu isotopes and 241Am. To determine the contamination source characteristics, it was used the Receptor Modeling technique. For computing the trajectories of radionuclide propagation in atmosphere, and for preparing the radionuclide fallout maps, the HYSPLIT program was used. In consequence of the present studies it was constructed the maps of 241Pu concentrations in air and soil in the territory of Ukraine in 1986. The forecast model has been created for 241Am distribution at the time of the maximum isotope activity in 2059. The given results point to the necessary of further investigation of the data on the 241Am accumulation and its effect on different ecosystems. This will permit the improvement of forecast models in emergency planning for protection of population health and rehabilitation of affected territories.