[3Q10-13] Environmental Radioactivity 3

[3Q12] Investigation on distribution of radioactive substances in Fukushima

(9)Temporal change of ambient dose rate in forest of Fukushima Prefecture

*Toshiro Yamaguchi¹ (1. University of Tsukuba)

Keywords:Air dose rate, forest, Fukushima dai-ichi nuclear power plant, Fukushima prefecture, radioactive cesium

Air dose rate which was collected at forests in Fukushima prefecture at 2011 (n=391), 2014 (n=285) and 2016 (n=100) were analyzed. They were grouped by 5 kinds of forest tree types. The decreasing rate of air dose rate was delay at Japanese cedar forest in 2014. However, it was improved by 2016.