采用“空间序列代替时间变化”的方法,对刀石山红锥种群结构进行分析,并运用C、Iδ、M* 、M* /X、CA5种聚焦度指标及Iwao M* - X回归测定种群空间分布格局和动态。结果表明:红锥种群结构存在增长和下降两种类型;聚焦度指标测定结果一致表明红锥种群的空间分布为随机型:Iwao M*-X回归分析表明分布的基本成分是红锥个体;在种群成长过程中,分布格局从聚集型向随机型转化。
Castanopsis hystrix is one of the important species of south subtropical evergreen broad-leaved forest in Fujian Province.With the method of spatial series substituting for time series,its population structure was analyzed in Daoshi mountain and the results showed that growing and declining type of population structure existed.The study on spatial distribution pattern by using five aggregate indices indicated that the type of distribution pattern was random,and further analysis with Iwao‘s M*-X regression suggested that the basic component of distribution was individual.Population dynamics analysis showed the spatial distribution pattern changed from aggregate type to random type during the course of population growth.
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