Abstract
Since the fuel revolution in the 1960s, along with the abandonment of community woodlands and the damage inflicted by the pine wood nematode, etc., the Japanese red pine forests have been deteriorating and some have disappeared.
At present, the decline in biodiversity, aquifer replenishment, and land conservation functions due to the deterioration of community woodlands are considered to be problems.
Consequently, in this study, with the aim of restoring second-growth Japanese red pine in woodlands, we investigated the colonization characteristics and early tree growth heights of Japanese red pine seedlings in the areas affected by pine die-off. As a result, it was confirmed that on slopes with a thin Ao horizon, the number and survival rate of red pine seedlings was predominantly high. Furthermore, we selected a tree height growth curve that had an exceedingly small error sum of squares, and adequate growth was confirmed when compared with past literature.
