摘要
在前人对植物种群自然稀疏过程的研究基础上，结合自适应通用增长模型，推导出一种能描述密度变化全过程的理论模型;lnN=aln2S十blnS＋c，其中N和S分别为种群密度和单株基面积，a、b、c为参数．该模型所表达的植物生长过程是一种Gompertz曲线，进而提出应用于格氏栲种群不同立地条件下不同发育阶段的密度效应模型：N=eXp(0．0462994H-0.00299305-1.221487H-0.01501599lnS＋6．253176H0.189134)，经用格氏栲种群密度资料验证，拟会结果理想，具有良好使用价值，为格氏栲林经营活动提供科学依据．
Based on the study of natural thinning process in plant populations beingdescribed by predecessors, the authors induced a theoretical model describing the wholedensity change process combined with self-adaptive and general model (SGM), ie.1nN=a1n2S+b1nS+c, where N and S represent population density and mean basal areaper plant, and a, b and c are parameters. It was found that the groWth process ofplants shown in the model is a kind of the Gompertz Curve. Meantime, the authorsproposed a tree density effect model in the stand that can be used in different siteconditions and growth stages. The model is described as N=exp (0.0462994H0.00299305 In2S-1.221487H0.01501599lnS+ 6.253176H0.189734), which is very well proved by observed data fromCastanopsis kawakamii population density, and which is very useful in practice and willprovide a scientific basis for forest management.
出处
《热带亚热带植物学报》
CAS
CSCD
1998年第4期309-314,共6页
Journal of Tropical and Subtropical Botany
基金
福建省自然科学基金
