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在2×2列联表基础上,采用方差分析,χ2检验,OI,DI,JI指数、方差/均值比的t检验和Morisita指数的F检验对四川康定折多山桃儿七所在植物群落中的20个优势种的种间关联和空间分布格局进行定量分析。结果表明,该区域桃儿七所在群落中20个优势种的总体关联性呈不显著的正关联,反映出群落处于稳定成熟阶段,各种间独立性较强,20个优势种组成的190个种对中,有2个极显著正联结,12个显著正联结,无极显著负联结,6个显著负联结,桃儿七在群落中无显著相关,在群落中独立性较强,桃儿七群落的分布格局服从随机分布。
On the basis of 2 × 2 contingency table, the variance analysis, χ2 test, OI, DI, JI index, variance / mean ratio t test and Morisita index F test were used to analyze the genetic diversity among the seven plant communities 20 dominant species of interspecific association and spatial distribution patterns for quantitative analysis. The results showed that there were no significant positive correlations among the 20 dominant species in the peach seven communities in this region, indicating that the community was in a stable and mature stage with strong independence among species and 190 dominant species Among the species pairs, two were significantly positive, 12 were significantly positive, negative significantly negative connection, six significant negative connection, Taosho seven no significant correlation in the community, strong independence in the community, peach seven The distribution pattern of the community follows a random distribution.