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作 者 ：李捷

期 刊 ：云南植物研究 1994年 16卷 01期 页码：1-3

关键词：三棱栎；群落；区系成分；

Keywords:Formanodendron doichangensis,

摘 要 ：根据三棱栎[Formanodendron doichangensis(Camus)Nixon & Crepet]群落的野外调查结果，分析了该群落的区系成分。热带及亚热带区系成分占很大比重(占总种数90.25％)，其中印度-马来西亚成分占有绝对优势(占41.46％)，滇、缅、老、泰、越周边地区的区系成分次之( 共占29.27％)，与热带非洲有微弱联系，但与热带大洋洲与热带美洲并无联系。这就在该群落区系成分分析的基础上有力地支持Kevin C．Nixon和 William L．Crepet的论点：三棱栎是独立的属，而三棱栎是在早第三纪时起源于Trigonobalanus verticillata的祖先类型.

Abstract:According to the result of wild survey on the Formanodendron doichangensis-commu-nity, the floristic elements of the community has been analysed. The Tropical & Subtropical floristic elements are of a great deal(90.25 of the total species), among them the Indo-Malaysian floristic elements are in the frist place(41.46), the floristic elements of the bor-der land in Yuaana and other countries (Burma, Laos, Thailand and Vietnam) are in the second place (29.2 in total), the floristic elements relating to Tropical Africa are few, but there are no the floristic elements relating to Tropical Australia or Tropical America. Based on the floristic analysis of the community, it is strong to support the view suggested by Kevin C. Nixon & William L. Crepet: Formanodendron is a distinct genus and F. doichangensis was originated from the ancestor of Trigonobalanus verticillata in early Tertiary.

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