云南国家重点保护野生种子植物区系研究

Study on the Flora of National Key Protected Wild Seeds in Yunnan

云南国家重点保护野生种子植物46科84属116种。对其科、属、种区系成分分析结果表明,科的分布区类型为热带地理成分占67.50%,温带地理成分占30.00%;属的分布区类型为热带地理成分占45.78%,温带地理成分占28.92%;表明该区系以热带地理成分为主,热带性质兼丰富的温带成分。在Ⅵ滇缅老越边境区、Ⅶ滇越边境区、Ⅷ滇东区分布比较集中且丰富。植物区系具有地理成分复杂、起源古老、特有现象明显的特征。

There were 46families 84genera 116species of national key protected wild seeds in Yunnan. The results of analyses of the family, genera, and species flora contents showed that the family distribution area types are： 67.50% for tropic geographic content, 30.00 % for temperate zone geographic content; the genera distribution areas are： 45.78 % for tropic geographic content, 28. 92 % for temperate zone geographic content; It showed that the tropic geographic contents were the main of the flora with plenty of temperate zone contents. It distributed in Ⅵ borders areas of Yunnan, Burma, Laos, and Vietnam, Ⅶ borders areas of Yunnan and Vietnam,Ⅷ east of Yunnan centrally and plentifully. The flora possessed the characters of complex of geographic content, ancient origin, and obvious special phenomena.