海南岛无翼坡垒林植物物种多样性和物种空间配置研究

Study on the Plant Species Diversity and Distribution of the Hopea exalata Forest on Hainan Island

摘要: 从群落最小面积、绝对植物物种多样性和植物物种多样性指数等三个方面的测定, 研究海南岛无翼坡垒林的植物物种多样性. 其结果是, 群落最小面积为3 500m², 在这个面积范围里, 1.5m高以上的立木有126种; 物种多样性指数D_s-w=5.03. 从群落物种分布的均匀度、各物种的频度和群落的垂直分布状况, 研究该森林的物种空间配置, 结果表明: 群落的均匀度J_s-w为71.76, 频度分布规律力A>B>C>D>E(按Raunkiaer频度级), 其特征是A级所占的比例很大, 约占总数的74.6%; 垂直分布状况表明, 无翼坡垒林整个群落的个体高度比例基本上是"金字塔"型, 但仍有一定的波动性.

Abstract: Hopea exalata forest is located in Mt. Gan shiling, Hainan Island. Hopea exalata is a singledominant species in the forest, but the forest also has more complicated compositions consisting of 1144 species and the minimal area is 3 500 m², the species diversity(D_s-w) is 5.03. The species evennees(J_s-w=71.76) is lower than other tropical rain forest, and the structure of plant community has some fluctuation.