林分状態をなす樹木個体重の頻度分布の解析-1-分布密度凾数を求める新しい一つの方法ならびに巾乗型分布〔英文〕

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HOZUMI, Kazuo (Dept.Biol., Fac.Sci., Osaka City Univ., ) Kichiro SHINOZAKI (Sci.Educ.Inst., Osaka) and Yoshiya TADAKI (Gov.For.Exp.Sta., Tokyo) Studies on the frequency distribution of the weight of individual trees in a forest stand. I. A new approach toward the analysis of the distribution function and the -3/2th power distribution. Jap.J.Ecol. 18,10-20 (1968). A new method to analyse the frequency distribution of tree weight (w) in a forest stand was developed by introducing the three cumulative amounts, Y=[numerical formula], and M=Y/N. By this MNY-method, a new distribution density function, φ(w)=(√<B>/2A)w^<-3/2>, was derived for three stands of Abies, Betula and Cryptomeria. It is emphasized that this approach enables us to deal with biomass, density and other ecological quantities in absolute instead of relative scale, and to compare different stands directly with each other in terms of the parameters of the distribution function.
日本生態学会の論文
1968-02-01