山口県のドングリ(17)下関市の神社林のドングリ

概要

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The species of Fagacea in the compound of 55 shrines in Shimonoseki-shi were investigated. Fifteen species belonging to four genera, 11 broad-leaf evergreen species and 4 broad-leaf deciduous species, were identified: Quercus acuta (in 3 shrines), Q.glauca (in 40 shrines), Q.gilva (in 1 shrines), Q.phillyraeoides (in 2 shrines), Q.salicina (in 4 shrines), Q.myrsinaefolia (in 2 shrines), Q.sessilifolia (in 1 shrines), Lithocarpus glabra (in 7 shrines), L. edulis (in 10 shrines), Castanopsis cuspidate sieboldii (in 3 shrines), C. cuspidate (in 37 shrines), Q.variabilis (in 2 shrines), Q.acutissima (in 4 shrines), Q.serrata (in 15 shrines), and Castanea crenata (in 9 shrines) , respectively. The average number of species per a compound in Shimonoseki-shi was 2.5. In this area, Q.glauca, C.cuspidate, and Q.serrata are dominant and common species; Q.glauca was observed in 72% of 55 shrines. C. cuspidate was in 67% of 55 shrines. Q.serrata was in 27% of 55 shrines. The appearance frequencies of these three species are as high as those of the other areas. But, the appearance frequency of C. cuspidate is two times of that of other areas. Moreover, the appearance frequency of L.edulis is higher than that of other areas and the appearance frequency of Q.myrsinaefolia is lower.
2007-01-31