広島県中部の農村地域における二次植生の群落構造と動態

概要

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The mechanisms of community dynamics of Pinus densiflora SIEB. et ZUCC. and the deciduous oak forests, which are dominant secondary forests in small rainfall areas of southwestern Japan, were investigated. In almost all of the pine stands sampled in Miwa-cho of Hiroshima Prefecture, deciduous broadleaved trees such as Quercus serrata THUNB. and evergreen broadleaved trees were growing under pine canopies, and they also were common in oak forests. In the succeeding pine forest, considerable litter was accumulated. After clear cutting this type of pine forest, the broadleaved trees regenerated by sprouts without help of the pines. The results deciduous oak forests grew up in patches in the pine stand matrix. In the process of the pine forest development, the replacement of tree species from being deciduous to becoming evergreens occurred. Therefore, the aboveground biomass of the understory was relatively large and constant in pine forests. On the other hand, evergreen trees grew from young stage, and the understory biomass decreased during the development of the deciduous oak forests. The light conditions might have corresponded to these ecological aspects.
日本森林学会の論文
1991-07-01