摘要
通过不同面积样方种数的比较、物种多样性指数等的计算和逐步扩大样地面积的调查，本文研究了滇南热带雨林种数／面积关系、个体／种数关系、物种多样性及树种的频度分布规律，认为滇南热带雨林群落学调查的最适取样（样方）面积是０．２５ｈｍ２，这个面积接近该类型热带雨林理论上的群落最小表现面积。为能体现一个具体森林（群落）类型的基本的植物区系组成，需设置４～５个这样的样方（总面积累计１ｈｍ２以上）。从与世界不同地区热带雨林的比较亦可见，云南热带雨林有类似的树种频度分布规律，单位面积上的物种多样性比典型的东南亚低地热带雨林稍低，但比非洲的热带雨林要高。
An investigation aiming to demonstrate plant species /area of the primary tropical rain forest of south Yunnan has been done. Species diversity, species/individual relationship and frequency of tree species were discussed. From the analysis of species/area, the optimal plot size for phytocoenological survey on the forest is suggested to be 0.25 hm 2, which is close to the phytocoenological minimum area of the forest, and the total sampling area for a forest type in which the intrinsic floristic composition can be embodied is also suggested to be at least one hm 2 (four such plots of 0.25 hm 2 with cumulative area one hm 2) . It is also concluded that the rain forest formations on non limestone have higher species diversity than limestone rain forest formations, and the formations on ravine habitats have higher species diversity than the ones on lower hill slopes. The comparison between the rain forest of Yunnan and the ones of the world revealed that the rain forest of Yunnan has a slightly lower species richness than typical lowland rain forests of southeast Asia, but higher than rain forests of tropical Africa.
出处
《生物多样性》
CAS
CSCD
1998年第4期241-247,共7页
Biodiversity Science
基金
中国科学院KJ85-05-03课题
云南省基金支持项目
关键词
热带雨林
物种多样性
云南
取样面积
tropical rain forest, species diversity, South Yunnan
