格氏栲种群生态学研究 VI.格氏栲种群空间格局分布的Weibull模型研究

Ecological Studies on Castanopsis kawakamii Population Ⅵ Weibull Model of Spatial Pattern

运用聚集度指标测定格氏栲种群空间格局聚集程度，首次将连续型Ｗｅｉｂｕｌ分布用于格氏栲空间分布型的研究，取得较好的理论结果，极大丰富了格氏栲空间格局分布型的分布理论；拟合结果表明：无论何发育阶段，格氏栲种群总体上说是符合威布尔分布的；同时，Ｗｅｉｂｕｌ分布的形状参数ｃ随空间格局聚集程度增大而减小趋势，即可用形状参数ｃ值表征种群聚集程度．

Continuous Weibull model and aggregate indices (C, I δ, and M *) were used to simulate spatial pattern and to estimate clumped intensity , of Castanopsis kawakamii population, respectively The results showed that populations at different stages of development all conformed to Weibull distribution Furthermore, the shape parameter c declined with increased aggregate indices, which means c may be used to estimate clumped intensity