[M-AG34] ラジオアイソトープ移行：福島原発事故環境動態研究の新展開

[MAG34-04] 福島の森林環における放射性セシウムの長期移行状況

*加藤 弘亮¹、恩田 裕一¹、庭野 佑真¹ (1.筑波大学アイソトープ環境動態研究センター)

キーワード：福島第一原子力発電所事故、放射性セシウム、森林

In Japan's forests, field data on the distribution and migration of radiocesium deposited by the Fukushima Daiichi Nuclear Power Plant accident have been vigorously collected over 11 years from the initial dynamics. In this presentation, we summarize the mechanisms of radiocesium transfer in Japanese forests. The research targets the transfer between atmosphere, canopy, and soil due to hydrological processes and the discharge from the forest headwater catchment through the water system, based on the results of field monitoring in experimental forest areas and watersheds in Kawamata and Namie towns, Fukushima Prefecture. In addition, we clarified the difference in the transfer rate of radionuclides between Fukushima and Chornobyl by combining the findings of previous studies. Finally, we discussed the transfer phenomena in forests that need further clarification because they may have long-term effects on the distribution of radionuclides in the forests.