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应用方差比率法、2×2列联表的χ2检验以及Spearman秩相关系数对闽楠天然次生林重要值较高的15个主要树种进行联结性分析,同时对目的树种闽楠不同生长期与其他乔木层树种进行关联性分析。结果表明:(1)物种间总体关联性检验表明15个树种总体种间呈不显著正关联,种间联结较为松散,树种的分布有一定的独立性;105个种对的正负关联比为0.91,检验显著率为9.52%。(2)林分中闽楠大树(20 cm≤DBH)、中树(10 cm≤DBH<20 cm)、小树(5 cm≤DBH<10 cm)与其他乔木层树种所形成的105个种对的正负关联比分别为0.86、0.76和0.69,其检验显著率分别为11.43%、8.57%和5.71%,均表现为大树>中树>小树,种间联结较为松散,群落处于不稳定发展阶段。
The variance analysis of variance, 2 × 2 contingency table, χ2 test and Spearman rank correlation coefficient were used to analyze the associations of 15 major tree species with high importance in the natural secondary forests of Phoebe bournei. At the same time, Strata tree species association analysis. The results showed that: (1) The overall correlation test between species showed that there was no significant positive correlation among the 15 species in total species, the interspecific association was loose and the species distribution was independent. The positive and negative correlations of 105 species were 0.91, test significant rate of 9.52%. (2) In the forest stands, there are 105 trees (20 cm≤DBH), middle tree (10 cm≤DBH <20 cm) and small tree (5 cm≤DBH <10 cm) The positive and negative correlations of the species pairs were 0.86, 0.76 and 0.69, respectively, and the test significant rates were 11.43%, 8.57% and 5.71%, respectively, showing as large tree> middle tree> small tree, interspecific association was loose, Unstable stage of development.