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作 者 ：施济普，朱华

期 刊 ：云南植物研究 2003年 25卷 05期 页码：1-3

关键词：西双版纳；季风常绿阔叶林；群落生态学；

Keywords:Saurtarbagatai Mountains,

摘 要 ：依据5个25?m×20?m样地的调查资料, 对西双版纳热带山地的季风常绿阔叶林的群落结构、种类组成、生活型构成、多样性、种面积关系等进行了分析研究，结果显示：西双版纳热带山地的季风常绿阔叶林主要由壳斗科、 大戟科、茶科和樟科等树种组成; 乔木树种种类丰富，灌木、草本、藤本种类相对较少；随乔木径级的增大，个体／种的数量逐渐减小；群落中以中叶、全缘、革质、非尾尖、常绿植物占优势；群落种-面积关系曲线在取样面积为1 500?m2时开始趋于平缓，意味着该取样面积可以考虑作为群落最小表现面积。

Abstract:Saur-tarbagatai Mountains,which join with several large floras,lie in the northwest of China.Their geographical location is very special.This article analyses the characteristics of the flora according to arealtypes structure of the species which can be divided into 12 arealtypes and 3 arealsubtypes.The results show that the species with northsouth distribution pattern occupy one third of the total species,this flora has much exchange with south and north floras,it is the important channel of the species moving between south and north floras.It also becomes the distribution boundary of some upland species because of the low altitude of this area.The xeric species distributed in the plains and the front of mountains have not been affected by the topography of this area.

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