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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３５００ｍ２，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Ｄｓ－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Ｊｓ－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．
Based on the determination of the minimum area, the absolute plant species diversity and the plant species diversity index, the plant species diversity of the slopeless slope forest in Hainan Island was studied. As a result, the minimum area of the community was 3,500 m 2. In this area, there were 126 species of stand trees with 1.5 m height or more. The species diversity index Ds-w was 5.03. The distribution of species in the forest was studied based on the evenness of species distribution, the frequency of each species and the vertical distribution of the community. The results showed that the evenness of community Js-w was 71.76, the frequency distribution law A> B> C> D> E (according to Raunkiaer frequency level), which is characterized by a large proportion of Grade A, accounting for 74.6% of the total; vertical distribution shows that individuals without the entire community The height ratio is basically “pyramid” type, but there is still some volatility.