种群格局关联维数是种群个体空间关联尺度变化规律的反映,表明了种群个体的空间相关程度。采用关联维数对福建省天宝岩国家级自然保护区珍稀濒危植物长苞铁杉种群格局的分形特征进行了研究。结果表明,不同样地长苞铁杉种群个体空间关联的无标度区介于1-32 m,种群格局关联维数值1.032 4-1.580 1,不同样地种群关联维数的大小为Q5>Q1>Q2>Q4>Q6>Q3,从而揭示出长苞铁杉在不同样地中个体空间关联尺度变化的差异。
Correlation dimension of population pattern could reflect not only the scaling variation properties of spatial correlation of individuals,but also the spatial occupation degree of population.The fractal characteristics of the spatial distribution pattern of the endangered and rare Tsuga longibracteata Cheng population in different plots in Tianbaoyan National Nature Reserve of Fujian was analyzed and compared,by applying correlation dimension.The results indicated that the scaling ranges of spatial correlat...