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作 者 ：杨兆静, 张钦弟, 李豪, 白玉宏, 毕润成

期 刊 ：植物科学学报 2013年 31卷 1期 页码：42-48

关键词：暴马丁香群落；种间关联；方差比率；2times；2联列表；相关检验；五鹿山自然保护区；

Keywords:Syringa reticulata community, Inter-specific correlation, Variance ratio, Correlation coefficient test, Wulu Mountain Nature Reserve,

摘 要 ：通过方差分析,χ²检验、Pearson相关系数和Spearman秩相关系数检验,采用2×2列联表对五鹿山暴马丁香林中频度较高的34个木本植物优势种,561个种对间的关联性进行了研究.分析结果表明: 34个优势种种间总体关联性呈现不显著负关联,表明该群落处于不稳定的顶级状态.χ²检验结果中,有216个种对呈正相关,345个种对呈负相关,正负关联比为0.626; Pearson相关系数检验结果为: 149个种对呈正相关,412个种对呈负相关,正负关联比为0.362; Spearman秩相关系数检验结果为: 206个种对呈正相关,365个种对呈负相关,正负关联比为0.564; Spearman秩相关系数比Pearson相关系数的检验方法灵敏度更高.

Abstract:We selected 34 dominant species according to frequency and studied interspecific associations and correlations using variance ratio (VR) analysis of the overall association and χ²-test,Pearson correlation coefficient and Spearman rank correlation coefficient based on 2×2 contingency tables of species presence/absence data.No significant negative correlations were observed among the 34 dominant species,which suggested that the forest was not stable.Interspecific correlations among 561species-pairs of the 34 dominant species showed that 216,149 and 206 species-pairs were positively correlated,345,412 and 365 species-pairs were negatively correlated,and the positive and negative correlation ratios were 0.626,0.362 and 0.564, based on χ²-test for 2×2 contingency table.Spearman rank correlation was more sensitive than the Pearson correlation.

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