Landscape Treatment of Forest in Natural Parks

Abstract

In recently according to increase of demand for sightseeing, the number of visitors to the natural parks are increasing year after year.
In natural park the forest is a important factor in landscape.
At the Chubu-sangaku national park we investigated the forest constitution and what kind of forest are better from the view-point of landscape.
In this area, forestation and cut down a forest are not take and the forest put in natural state, so stand growing to over-thick and beauty effect of forest is not bring out.
Crown density of forest in this area is more than 50% in general and some time over 100%.
Result of this investigation the worthy forest from the view-point of landscape is as follows.
(1) The crown density of 28-47% is better as a forest constitution in national parks.
(2) In light demanding tree like the white birch and the black alder the crown density is better under 30% in young stand, and 40-50% in old growth stand.
(3) In case of the old age of katsura-trees and the elm-tree, although the crown density are 60% or more than that, the forest show light and magnificent apearance as a result of highness of trees.