<報文>秩父山地のイヌブナ,ブナ林について

概要

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Phytosociological studies were conducted on Fagus（F. crenata and F. japonica） forests in the Chichibu mountains, middle Honshu. Two associations were determined : a Carici Tsugetum sieboldii and a Corno-Fagetum crenatae The Carici-Tsugeturn Sieboldii occurs in lower altitudes of the Fagetea crenatae region, while the Corno-Fagetum crenatae grows at higher altitudes. These 2 associations of Fagus forest were divided into 4 subassociations, 2 variants and 4 subvariants, with different altitudinal habitats and topography. The Carici-Tsugetum sieboldii in this area is composed of about 40 species and has four characteristic and differential species with high constancy. The Corno-Fagetum crenatae, however, consists of fewer than 30 species and has only two characteristic and differential species with low constancy. The Corno-Fagetum crenatae has many elements of the Carici-Tsugetum sieboldii in its units at lower elevation. This appeared to be because about these mountains are located far from the sea, with annual precipitation less than about 1500 mm.
横浜国立大学の論文