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The purpose of this study is to clarify the successive change of pollen assemblages, paleovegetation and paleoclimate through the Pleistocene age of Kyushu. On the basis of synthesis of the pollen rec...ords from the Pleistocene strata in the Chikugo, Ôita, and Miyazaki areas, 33 pollen assemblage zones are recognized. These zones hereafter are designated the KP-1 to 33 zones in ascending order. The paleovegetation and the paleoclimate corresponding to each pollen zone are respectively discussed, and the comparison of each pollen zone with the isotopic stages establishsed on the deep oceanic sediments is also attempted. The “long term transition” of pollen assemblages through the Quaternary in Kyushu is partly different from those observed in the Kantô and Kansai areas; that is to say, in Kyushu Taxodiaceae was the dominant taxon in the pollen assemblage in the time span from the latest Pliocene to about 0.8Ma, Pinaceae became dominant after 0.8Ma, then Pinaceae was replaced by Fagus at about 0.45Ma, and after that Fagus kept the status at least until the beginning of the Late Pleistocene. Liquidambar is considered to have extirpated in the Riss/Würm interglacial period. The exclusive dominance of Alnus fern spores are presumed to be caused by the destruction of the vegetation by the volcanic activity.show more
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