云贵鹅耳枥种群分布格局的分形特征  

Fractal Characteristics of Distribution Pattern of Carpinus pubescens Population

作　　者：梁士楚 

机构地区：[1]广西红树林研究中心,北海536007

出　　处：《武汉植物学研究》2001年第4期263-268,共6页Journal of Wuhan Botanical Research

基　　金：国家自然科学基金资助项目 ( 39860 0 2 3);广西自然科学匹配基金项目(桂科配 991 2 0 1 1 )

摘　　要：应用分形理论中的计盒维数和信息维数探讨了贵阳喀斯特山地云贵鹅耳枥种群分布格局的分形特征。结果表明 ,云贵鹅耳枥种群的分布格局具有分形特征 ,其计盒维数为1 .1 85 3～ 1 .741 9,信息维数为 1 .1 961～ 1 .70 5 1。集群型的云贵鹅耳枥种群的计盒维数和信息维数均比随机型的高。计盒维数定量地反映了云贵鹅耳枥种群占据生态空间的能力 ,信息维数则揭示了该种群格局强度的尺度变化程度和表征了种群个体分布的非均匀性。The fractal characteristics of distribution pattern of Carpinus pubescens population in the karst mountain of Guiyang were studied by using the box dimension and information dimension of fractal theory.The results showed that the distribution pattern of C.pubescens population possesses fractal characteristics;the box dimensions ranged from 1 1853 to 1 7419,and the information dimensions from 1 1961 to 1 7051.The box dimension and information dimension of the clumped population are higher than those of the random population.The box dimension reflects the spatial occupation degree of the population,while the information dimension quantifies the scale variation degree of pattern intensity and discloses the unevenness of individual distribution.It has been found that the two fractal methods are suitable for quantitatively describing the fractal characteristics of distribution pattern of C.pubescens population.

关 键 词：喀斯特山地 贵鹅耳枥 种群 分布格局 计盒维数 信息维数 分形特征 森林群落 

分 类 号：S718.542[农业科学—林学] S792.189