富士山西麓におけるホソバショリマの分布と生態
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概要
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Thelypteris Beddomei (BAK.) CHING was studied with regard to its distribution, community structure and some environmental conditions chiefly along the drainages near the upper stream of the Shiba River at the western foot of Mt. Fuji, Japan. The area of the present study is recognized as the nonthern limit of distribution of the species in Japan. In the present study, Thelypteris Beddomei was found at eight localities in the Uchino, Ashigata district and around Lake Tanuki, Fujinomiya City, Shizuoka Prefecture (Map. 1). The localities are distributed at altitudes ranging approximately from 550m to 650m and are nearly in 35°20′N. lat. and the area belongs to the upper part of warm temperate climate zone. The community sizes ranges roughly from 4 m^2 to 1958 m^2 and amounts to about 4330 m^2 in all. The floristic composition and community structure are presented in Table 1-10. It is a noticeable fact that the species grows together with Sasa plexipes and Miscanthus sinensis in some communities and that the fern flourishes vigorously as the othe two species. The species grows in somewhat shady and damp sites under several kinds of open forests. The PH value of the soil ranges from 5.9 to 6.0,thus showing a week acid reaction. According to TAGAWA (1959) and NAMEGATA (1961), the phenological type of Thelypteris Beddomei is described as ever-green. In my observation, however, the phenological type of the fern species in this particlar area is found to be perfectly summer green.
- 日本生態学会の論文
- 1966-08-01
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