Ecological Considerations for Applying The Growth Model of The System Yield Table to Lower Stand Densities

Abstract

The thinning effects and the stand density level were analyzed from ecological viewpoints using continuous forest inventory data in order to apply the growth model of System Yield Table to lower stand densities. Growth simulations under different stand density conditions showed that the total yield volume changed little if the cutting age is long enough. This result suggests the soil and water protection forests had better be managed in lower density with long rotation for not only environmental purposes but also timber production.