山口県のドングリ(12)油谷町、日置町の神社林のドングリ

概要

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The specie of Fagacea in the compound of 20 shrines in Yuya-cho and 11 shrines in Heki-cho was investigated. Fourteen species belonging to four genera, 9 broad-leaf evergreen species and 5 broad-leaf deciduous species, were identified: Quercus phillyraeoides (in 1 shrine), Q.glauca (in 14), Q.acuta (in 5), Q.gilva (in 1), Q.salicina (in 10), Q.sessilifolia (in 2), Lithocarpus edulis (in 2), Castanopsis cuspidate (in 22), C.cuspidata.sieboldii (in 1), Q.serrata (in 6), Q.dentata (in 1), Q.aliena (in 1), Q.acutissima (in 1), and Castanea crenata (in 10). The average number of species per a compound was 2.6 and 2.4, respectively. In this area, C.cuspidata is a dominant and a common specie; This specie was observed 71% of 31 shrines. And this value is highest among those obtained in the other areas which had been studied. To addition this, Q.acuta is found in 16% of 31 shrines in this area, although it has appeared in only 3% of 875 shrines which had been studied. These two seem to be a characteristic species in this area.
山口大学の論文
2003-01-31