云南森林植物区系研究

云南森林植物(系指木本植物)主要起源于新生代,少数古老种起源于古生代至中生代。云南森林植物区系成分极为丰富而复杂,据研究已知森林植物149科(蕨类植物1科,裸子植物10科,被子植物138科),840属,5271种。本文根据对云南森林植物15个分布区类型统计分析,证明云南森林植物区系明显富于热带性同时兼有丰富的温带成分,热带属占总属数72.12％,温带属占总属数21.87％,中国特有属在云南有46属,占云南总属数5.33％。中国特有属的三个分布中心。有两个分布中心在云南(即新特有属中心和古老特有属中心)。本文还对云南森林植物区系的地理成分起源;云南森林植物区系成分复杂、丰富之成因;云南森林植物开发利用之前景进行了研究和探讨。

A STUDY OF FLORA OF YUNNAN

Forest plants of Yunnan were mainly originated from neozoic era, and some relic species were originated from the palaeogoic era to mesozoic era. The floristic elements of forest in Yunnan is extraordinarily rich and complicated. According to statistics, the forest plants that have been recorded and described taxonomically from Yunnan consist of 149 families, 840 genera and 5271 species. Based on the statistic anaslysis of fifteen distributional patterns of forest flora of Yunnan, it is evidened that the forest flora of Yunnan apparently possesses of plentiful tropical elements and combined with elements of temperate flora. In the total number of genera of forest flora of Yunnan the tropical genera makes up 72.12% and the temperate genera 21.87%. According, three endemic distributional counters of genera have been identified from China, of which two of them were in Yunnan (the center of neo-endemic and the center of paleo-endemic). Furthermore, this paper analyses and discusses the origin of the geographic elements of forest flora of Yunnan as well.