FORMATH
Online ISSN : 2188-5729
Original Article
How Does Spacing Shape Affect Tree Growth? -Preliminary Study of an Area Fixed, Shape Change Design Plot Experiment-
M. TakahashiN. Furuya
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JOURNALS FREE ACCESS

2014 Volume 13 Pages 60-77

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Abstract

The effect of spacing shape is one of the major problems of tree growth modeling. Nelder (1962) proposed an area fixed, shape change plot design (design Ib) to solve the spacing-shape problem. We analyzed periodically measured data from a design Ib type plot of Picea glehnii planted in the Hitsujigaoka experimental forest at the Hokkaido Research Center of the Forestry and Forest Products Research Institute. As a preliminary result, spacing shape affected growth in both DBH and height.

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