作　　者： ; (谢义林）; (黄玉源）; (黎桦）;

机构地区： 广西大学农学院

出　　处： 《基因组学与应用生物学》 1999年第S1期142-147,共6页

摘　　要： 那坡植物区系位于北回归线以南，中越二国滇黔桂等四省边区，该类植物非常丰富，现已发现46科，100属，318种。区系地理成分复杂多样，属可以划分为10种类型（变型），种可以划分为13种类型（变型）。本区系具有明显的热带亲缘，热带分布属占77％，热带分布种占61.95％。亚洲热带分布及其变型占有较大的比例，本区系与亚洲热带植物区系以及云贵高原植物区系有密切的亲缘关系。区系地理成分有明显的垂直分布规律，聚类分析的结果表明，海拔800m是区系地理成分垂直分布的分界线。本文采用多元分析方法对区系内部的分化和区系间的相似性进行了研究。 Lapo and neighbor pteridophyte flora locating at south of the Tropic of Cancer andbeing surrounded by Vietnam, Yunnan, Guangxi and Guizhou provinces of China is very rather richin families, genera and species, there are 318 species represented 100 genera and 46 families. Thetypes of pteridophytic distribution pattern are rich also, the genera and species area pattern have 10types and 13 types respectively. This flora has close affinity with tropical flora, in which the tropi-cal distribution patterns of genera are 77% and the tropical distribution patterns 61. 95%. The factthat Asian tropical area patterns are very importantin the flora indicate that the flora studied hasclose affinity with Asian tropical flora and Yunnan-Guizhou plateau flora. The vertical distributionpatterns of species are studied by cluster analysis technique. The results indicate that an elevationof 800 meters is a line of dcmarcation of vertical distribution. By multiple analysis technique, thedifferentiation of the pteridophyte flora was studied quantitatively in present paper.

关 键 词： 蕨类植物区系 垂直分布 多元统计分析 那坡 广西

领　　域： [生物学]