島根大学理学部紀要

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島根大学理学部紀要 20
1986-12-25 発行

山陰地方島根県の砂浜に生育するコウボウムギの分布型

Distribution Pattern of Carex kobomugi OHWI Growing on Sandy Beaches of Shimane Prefecture,San'in Region
宮田 逸夫
原元 利浩
ファイル
内容記述(抄録等)
Distribution pattern of Carex kobomugi OHWI was investigated with reference to the distance from seashore line in three sandy beaches including five stands of Shimane Prefecture , San'in Region . Contagious distribution denoting the statistically significant departure from randomness was observed in all stands. A definite correlation could not be recognized between the degree of contagiousness of distribution and the distance from the seashore line. Twin type of clumps were detected in four-fifths of eighteen distance-classes established in five stands. The smaller scale of clump was estimated to be 0.32 m^2 , while that of the larger one was to be 1.28 m^2-5.12m^2 . The frequency distribution of the actual clump sizes followed the lognormal distribution. The smaller scale of clump corresponded withthe maximum total clump area as a whole.