Abstract

The theories of the Poisson process was applied to construct a pure theoretical model describing the diameter distribution of trees in selection forest stands. The author derived a diameter distribution function for selection forests under several assumptions on the cutting probability. The applicability of the derived function to the actual distribution was demonstrated using nine observed diameter distribution data from permanent sample plots of Ate (Thujopsis dolabrata SIEB. et ZUCC var. hondai MAKINO) selection forests at Noto district, Ishikawa. The derived function agreed well with the observations.

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