栃木県南部, 二宮町における立川期の植物遺体群集
1984 年 23 巻 1 号 p. 21-29
詳細
1984 年 23 巻 1 号 p. 21-29
The pollen assemblages, macroscopic remains (seed, fruit, leaf, etc.), and wood remains obtained from the Latest Pleistocene peat bed at Harabun, Tochigi Prefecture, ca. 20, 000y.B.P., resemble each other in occurrence of such remarkable taxa, as Pinus subgen. Haploxylon, Picea, Larix, Betula, and Alnus. The forests are characterized by a dominance of Pinus koraiensis and Picea, accompanied by Larix and Betula platyphylla. Wood anatomy shows that Picea includes two groups, but P. cf. shirasawae is identified or the basis of cone morphology These indicate the upper cool-temperate to lower subalpine climate. From these facts and the previous reports it is inferred that such forests spread out widely in the northern Kanto region during the last glacial maximum.
