从植物种群间联结性探讨生态种组与功能群划分——以尖峰岭热带低地雨林乔木层数据为例

Discussing on the Ecological Species Groups and Functional Groups Division Based on the Interspecific Association——A Case Study on the Arbor Layer Data in Tropical Lowland Rain Forest of Jianfenling, Hainan Island, China

以海南岛尖峰岭国家级自然保护区低地雨林(青皮林)不同海拔的23个样方调查数据为例,研究32个主要乔木层物种的种间联结性,探讨物种的生态种组和功能群的划分。结果表明:主要种群间具有总体上的正联结性,但在496个种对中,具有较明显正联结性的种对数约占总种对数的10%,绝大多数种对表现为弱联结性或无联结性,说明所调查的热带森林主要种群具有相对独立分布的特性。通过物种间联结系数和聚类分析方法,将32个主要物种划分为4个生态种组和10个功能群,并提出各功能群物种的辨识特征。

Based on twenty-three sample plots＇ survey data on the lowland rain forest, Vatica mangachapoi communities from varied latitudes in Jianfengling National Nature Reserve of Hainan Island, interspecific association among thirty-two dominant species were analyzed. Then the ecological species groups and functional groups division were discussed. The results showed that the dominant populations had general positive interspecific association, but the species pairs with significant positive associations were only ten percent of the total 496 species pairs, and most of the species pairs showed weak interspecific association or without interspecific association. That is, the investigated forest populations had characteristics of relatively independent distribution. Finally, through the interspecific association coefficients and species cluster analysis,, thirty-two dominant species were divided into four ecological species groups and ten functional groups, and recognition characters of these ten functional groups were proposed.