北海道ゴヨウマツ林の群落と分布
1960 年 10 巻 3 号 p. 120-123
詳細
1960 年 10 巻 3 号 p. 120-123
To the present, Pinus pentaphylla in Hokkaido has been known from Provs. Oshima, Shiribeshi, Iburi and the Hidaka Range. But recently, the third geographical group of distribution was found, of which locality is limited along the Upper Nipesotsu, a branch of the Tokachi River (Fig. 1,4). The isolated area of Pinus pentaphylla under consideration, occupies about 2 ha and the Pinus pentaphylla stand not over about 0.5 ha. The figure of belt-transect at this point is show in Fig. 2,and its structure is shown in Tables 1,2 and 3. From the sociological studies on Pinus pentaphylla forest in Hokkaido, the following sociations was recognized : -Pinus pentaphylla-Menziesia pentandra sociation, P. pentaphylla-Ilex Sugeroki var. brevipedunculata sociation, P. pentaphylla-Rhododendron Fauriae var. rufescens sociation and P. pentaphylla-Carex blepharicarpa sociation. According to these studies, the Pinus pentaphylla-Ericaceae shrubs association on a rocky place is the representative one.
