摘要
根据植物生长的密度理论和有关生物学假设 ,推导出一种新的植物种群自疏规律模型 ,即 N=exp( aln2 B+ bln B+ c) ,这里 N和 B分别为种群密度和植物种群平均重量或平均胸高断面积 ,a、b、c为参数。将该模型应用于油松种群密度变化规律研究中 ,证明该模型能很好地拟合实际的观测资料 ,并且具有表达式简单等特点。因而 ,该模型是油松植物种群自疏规律的有效描述。
Based on the density theory of plant growth and related biological hypothesis,a new model of self thinning law of plant population was proposed,i.e. N =exp( a ln 2 B+b ln B+c ),where N and B is population density and weight mean plant or mean basal area at DBH and a,b and c are parameters.It was proved that the model fitted observed data very well from Pinus tabulaeformis population,and which was very simple.Therefor,the model is a satisfactory expression of self thinning law of plant po pulation .
出处
《武汉植物学研究》
CSCD
1999年第1期29-33,共5页
Journal of Wuhan Botanical Research
关键词
自疏规律
油松
模型
Self thinning law, Pinus tabulaeformis, Model
