[关键词]
[摘要]
用聚类分析法对中国二叠纪华夏植物群２５个分布区，８３１种进行古生物地理区划，与以往定性分析结果相互借鉴。结果表明原划分方案总体上得到验证，华北区内似存在更次一级的植物地理单元。
[Key word]
[Abstract]
On the basis of various features of individual floras,and integrated with the particular development conditions of the palaeovegetation as well as the geotectonic position of flora localities,the Permian distribution of Cathaysian flora in China has got a division of qualitative determination as follows.
[中图分类号]
Q914.646 Q914.72
[基金项目]
国家自然科学基金!项目（No．49872009） 部分成果
