*Chiharu Kuroda1, *Wakana Shimazu1, *Yuko Shimizu1, *Sakura Hattori1, *Yuka Ymada1, *Ami Yamamoto1, *Hirono Yoshioka1
(1.Fukui prefectural Wakasa Senior High School)
Keywords:pollen analysis , three major cold famine periods, climate reconstruction, modern analogues technique
It is known that past climates can be reconstructed quantitatively through pollen analysis of sediments. In Wakasa, Fukui, it is recorded that there were three major cold famine periods during the Edo era, but it's not known what the temperatures were like at that time. We tried pollen analysis in order to verify the past climates quantitatively. Based on the results of Carbon-14 dating, we collected 16 sample sediment layers from the first years of the major famines during the Edo era. After pollen extraction, we counted the pollen of the trees, 200 in total per 1 sample and calculated the rate of genus and species included in each sample. Based on the pollen data, we reconstructed the climate of 300 years ago by using the reconstruction software, Polygon. As a result, we could find two low temperature periods.