44. Relations of Root-forms on Snow Pressure : Characteristics of Trees on Snow-covered Slope (The 2nd Report)

Abstract

This is one of the fundamental studies on tolerable capacity of trees against the snow pressure upon slopes. We observed natural forest at several snow-covered slopes in Hokkaido and the results are summarised as follows. 1) The tree roots living on the snow-covered slopes mostly show the figure as Photo.- 1 and -2, and grow in like way of Fig.-1. 2) The trees, on the snow-covered slopes, grow with the form as Fig.-2, in order to tolerate against the pressure caused by snow deposit. 3) The tolerable capacities of Todomatsu (conifer) and Itayakaede (leaf tree) against the snowpressure are shown in Fig.-3.