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格氏栲种群优势度增长改进模型的研究
引用本文:刘金福,洪伟.格氏栲种群优势度增长改进模型的研究[J].植物生态学报,2001,25(2):225-229.
作者姓名:刘金福  洪伟
作者单位:福建农林大学南平校区院资源与环境系, 南平 353001
基金项目:福建省教委科学基金资助项目(K20043)
摘    要:提出有限的空间种群增长的Logistic改进模型探讨格氏栲种群基面积增长规律,即dS/dt=rS(1-S^θ/K)。该模型通过树种的竞争特性因子θ控制,将指数增长、线性制约、下凹增长和上凸增长非线性制约概括一个统一的自适应性的非线性制约通用模型。运用改进单纯形对Logistic改进模型进行优化,拟合结果表明改进模型是格氏栲种群优势度增长动态变化的一个极好机理描述式,其增长速度最大是在141年。

关 键 词:格氏栲  种群增长  改进Logistic模型  改进
修稿时间:1999年12月6日

A MODIFIED LOGISTIC MODEL OF THE GROWTH PATTERN OF DOMINANCE IN A CASTANOPSIS KAWAKAMII POPULATION
LIU Jin-Fu,and,HONG Wei.A MODIFIED LOGISTIC MODEL OF THE GROWTH PATTERN OF DOMINANCE IN A CASTANOPSIS KAWAKAMII POPULATION[J].Acta Phytoecologica Sinica,2001,25(2):225-229.
Authors:LIU Jin-Fu  and  HONG Wei
Abstract:A modified Logistic model (MLM: dS/dt=rS(1-Sθ/K)) which hasself-adaptiv e properties, a nonlinear restrictive model and a general mechanism model were c onstructed to test growth dynamics of tree basal area of Castanopsis kawakamii p opulation. Exponential, Linear dependent and nonlinear restrictive models of hol low and protruding growth volumes were also constructed and incorporated in to t he competitive index. A modified simplex technique was used to optimize the MLM and the fitting results show that the MLM did model the Castanopsis kawakamii do minance growth dynamics well. The maximum growth rate of basal area in the model led population was reached at 140 years.
Keywords:Castanopsis kawakamii    Growth dynamics  Modified Logistic model  Modified simplex method
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