海南岛吊罗山热带山地雨林邻体效应分析

Analysis of Neighborhood Effect of Montane Rain Forest of Diaoluo Mountain in Hainan

本文从三个方面研究了海南岛热带山地雨林邻体效应,在个体与其第一邻体、第二邻体、第三邻体的邻体效应中只有个体与其第三邻体表现出显著的邻体效应;在高度层次(A层>13米,B层10～13米,C层<10)上只有A-B层、B-B层个体与第三邻体、A-A层个体与第二邻体表现出显著的邻体效应,这表明同层个体之间相互关联较弱,高层个体对低层个体的邻体效应不明显。个体与总邻体的4个关系模型的24种回归形式皆不显著,表明群落中个体与邻体之间的邻体效应不太显著。以上结果与该群落种群多为随机分布,种间多为零联结,个体旁多为其它种的个体的观测是一致的。

This paper studies the neighborhood effect of tropical montane rain forest of Hainan from three aspects. There is neighbourhood effect of individual with its third neighbour, and individual with its first, second neighbour has no; From the level of height, the A-B lever and B-B lever of individual with-its third neighbour, and A-A lever of individual with its second neighbour have the neighborhood effects, others have no obvious neighbour effect. These show poor relationship between individuals. The high level individual has no neighbourhood effect with the low lever individual. Using the model of individual with its three neighbours, we find all the model are not good. Maybe there is no obvious neighborhood effect. The result is coincide with the previous studies of the population spatial distribution, the species association and the biodiversity. Most of individual is random, most of species have no association, and near the individual is most other species which prevent the competition.