摘要
本文根据野外实测数据和采用数学分析方法,在研究羊草种群无性系营养扩散和生长过程的基础上建立了符合描述羊草种群无性系生长格局的相关随机走动模型和简单扩散模型。对模型进行检验,结果表明,所建模型可以定量地描述羊草种群无性系的生长格局。
Statistical analyses over time suggest that Leymus chinensis rhizone lengths and branching angles are independent of each other, and also of the previous branching angles and rhizome lengths. This paper shows that the process of clonal growth in Leymus chinensis is consistent with stochastic simulation models and random-walk models. This study represents the application of random-walk models to pattern of the vegetative spread of clonal plant Leymus chinensis.There was no statistical difference between observed ramet displace-
ments and displacements predicted in a correlated random-walk and diffusion models. These models can be used to make quantitative predictions about the spread of Leymus chinensis population.
关键词
羊草种群
无性系
生长格局
Leymus chinensis population
Clone
Random-walk model
Diffusion model
Growth pattern
