Radioactivity Dynamics in forests
ＱHow much radioactive cesium is released from forests? How much radioactive cesium flows into the sea?
ＡOf the initial deposit of 137Cs in forests after the accident, which is approximately 370TBq, it is estimated that approximately 1TBq was released into the sea in one year (examples of the Ukedo and Takase rivers).
- Will clean areas be contaminated due to radioactive cesium flowing out of forests?
- In what kinds of land use is radioactive cesium deposited? How much is deposited?
- Is it possible to use water from contaminated rivers and reservoirs for irrigation water?
- How much does additional internal dose exposure would be if we assume highest concentration during the fire event was exposed? How harmful for the health?
- 日本原子力研究開発機構. “原子力規制庁委託事業「平成25年度東京電力（株）福島第一原子力発電所事故に伴う放射性物質の長期的影響把握手法の確立」事業 成果報告書”. 2014.
- Kurikami, H. at al., Sediment and 137Cs Behaviors in the Ogaki Dam Reservoir during a Heavy Rainfall Event, Journal of Environmental Radioactivity, vol.137, 2014, p.10-17.
- 錦織達啓ほか, 林床被覆の違いが土壌侵食に伴う放射性セシウムの移動に及ぼす影響, 日本森林学会誌, vol.97, no.1, 2015, p.63-69.
- Yoshimura, K. et al., Evaluation of Radiocaesium Wash-off by Soil Erosion from Various Land Uses using USLE Plots, Journal of Environmental Radioactivity, vol.139, 2015, p.362-369.