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岩溶山区白刺花种群格局的分形特征分析
引用本文:王普昶,赵丽丽,宋高翔,张锦华,张莉.岩溶山区白刺花种群格局的分形特征分析[J].安徽农业科学,2011,39(21):12803-12804,12808.
作者姓名:王普昶  赵丽丽  宋高翔  张锦华  张莉
作者单位:贵州省草业研究昕,贵州贵阳,550006;贵州大学动物科学学院,贵州贵阳,550025
基金项目:贵州省农业攻关项目,贵州省自然科学基金项目
摘    要:采用计盒维数、信息维数和关联维数对贵州岩溶山区白刺花种群空间分布格局进行研究。结果表明,岩溶山区不同样地白刺花种群分布格局的计盒维数值较低(1.049~1.512),信息维数样地间差异较大(0.933~1.741),关联维数中等(1.375~1.664)。表明整体上岩溶山区白刺花种群个体空间占据能力不强,较大植株个体分布趋于均匀性或随机性,较小植株个体呈聚集性分布且植株间竞争激烈,岩溶山区白刺花种群的空间分布格局特征是其对生境长期适应的结果。

关 键 词:白刺花  空间占据  分形维数  种群格局

Study on Fractal Properties of the Spatial Pattern of Sophora davidii Population in Karst Region
Institution:WANG Pu-chang et al(Guizhou Prataculture Research Institute,Guiyang,Guizhou 550006)
Abstract:The distribution patterns of S.davidii in Karst region has been described by using the box-counting dimension,information dimension and correlation dimension of fractal theory.The results revealed that S.davidii population held varied fractal traits on spatial occupation,pattern intensity and spatial correlation of individuals in different samples.The box-counting dimension ranged from 1.049 to 1.512,information dimension from 0.933 to 1.741 and correlation dimension from 1.375 to 1.664.Overall,S.davidii individuals did not have strong abilities to make use of the space,the correlation degree was weak.The distribution of individuals in the aging stage was tended to uniformity or randomness,which had low abilities to make use of space.The distribution of individuals in the young stage was aggregation,which had relatively intense competitions.The spatial pattern characters of S.davidii populations may be their reponses to environmental facters.
Keywords:Sophora davidii  Volume exclusion  Fractal dimension  Population pattern
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