【摘要】 用中国壳斗科植物属间空间相似性系数,定量探索属间关系,为分类学、系统发育等提供新的研究手段和依据.在ArcGIS9.2软件中制作中国壳斗科植物空间数据,计算属间空间相似性系数,分析属间空间关系.三棱栎属与水青冈属的四个空间相似性系数均为0,两属的空间分布完全分离,与其他属的空间重叠度最低,三棱栎属、水青冈属分别属于三棱栎亚科、水青冈亚科.三棱栎属分布区完全或绝大部分落入栗属、锥属、柯属、青冈属、栎属分布范围内,三棱栎属与这些属的共同特点是雄花序穗状或圆锥状,三棱栎属向东部、东北部、北部与这些属间发生联系.柯属与锥属的四个空间相似性系数和空间重叠度最高,它们与栗属、青冈属的四个空间相似性系数和空间重叠度其次,四属组成栗亚科.栎属与其他属的空间重叠度相差较大,构成栎亚科.更多还原

【Abstract】 Relationship between genera was quantitatively studied by spatial similarity coefficient between genera in Fagaceae of China.It provides a new method and basis for taxonomy,phylogenetic,et al.Spatial data in Fagaceae of China was made in ArcGIS 9.2 software.Spatial distribution of genera was created.Spatial similarity coefficient between genera was computed.Spatial relationship between genera was analyzed.Four spatial similarity coefficients between Trigonobalanus and Fagus are all zero.Their spatial distributions are separated completely.Spatial overlap between Trigonobalanus,Fagus and other every genus is the lowest.Trigonobalanus and Fagus belong to Trigonobalanoideae,Fagoideae respectively.Trigonobalanus distribution is entirely or mainly within the range of Castanea,Castanopsis,Lithocarpus,Cyclobalanopsis or Quercus.Character between Trigonobalanus and these genera is male inflorescences heads,pendulous.These genera are related with east,northeast and north of Trigonobalanus.Four spatial similarity coefficients and spatial overlap between Lithocarpus and Castanopsis are the highest.Then the two genera and Cyclobalanopsis,Castanea are second in four spatial similarity coefficients and spatial overlap.Castaneoideae includes Castanea,Lithocarpus,Castanopsis and Cyclobalanopsis.Spatial overlay between Quercus and other genera is obviously different.Quercus belong to Quercoideae.更多还原