坝王岭热带山地雨林群落种群垂直分布

A Primary study on the Species Vertical Distribution in the Community Space of Bawangling Tropical Rain Forest

应用中心点,四分法取样技术于海南岛坝王岭的热带山地雨林,并根据群落以及部分优势种的特性,人为划分群落和各个种的层次高度范围,研究了一部分种群在群落中的垂直空间分布。结果表明,整个群落的个体垂直空间分布均匀度较高,群落下层的物种多样性指数稍高于上层,而均匀度则稍低。各个种群的垂直空间分布多度不等,有利于揭示种群在群落结构、演替过程的作用.种群的垂直空间分布格局呈随机型或集群型。

Species distribution in the community space may be considered from twe sides,ievei and vertical.Most of the original studies were focused on the first one.In this paper, the central-point sampling method was used in a tropical rain montane forest community of Bawangling,Hainan Island. With the tree height, the vertical community space was divided into serval layers.And some populations vertical distribution were studied.The result showed that with increasing of height along the vertical community space, species diversity index decrease and species evenness increase. The relative vertcal distribution abundance proportion of a populttion was used to indicate the role of the population in the community,In this community,Cryptocarya chinesis, Illicium ternstroemioites and Psychotria rubra dominate in each layer individually or together. The distribution of a species individuals in the vertical space is random or contagious.