武夷山米槠林群落优势种群空间格局的研究

Study on the spatial distribution pattern of dominant populition in castanopsis carlessii forest in Wuyishan mountains

应用6种典型聚集度指标和2种频次分析法(Poisson分布和负二项分布)的χ2拟合检验等方法测定了武夷山米槠林群落优势种群的空间分布格局并分析格局形成原因.结果表明,武夷山米槠林群落10个优势种群从幼树时期到成树时期大多为聚集分布,这主要与物种本身的生态和生物学特性以及物种的竞争排斥作用有密切联系.研究结果可为米槠林群落的保护和经营管理提供科学指导.

The spatial distribution pattern of dominant population in Castanopsis carlessii community in Wuyishan Mountains was determined using six aggregate indices(C,CI,M*,PAI,CA,PI) and two methods of frequency distribution (the Poisson and negative binomial distribution),and the causes of the evolved pattern was determined.The results indicated that most dominant populations in Castanopsis carlessii community were clumped from sapling stage to mature tree stage.The patterns were closely related not only to the ecological and biological characteristics of each species,but also to the competitive exclusion among them. The results can offer theoretic guidance for Castanopsis carlessii community protection and management.