【摘要】 用 2× 2联列表和 χ2 检验法对沈阳市天柱山油松栎林木本植物进行种对间联结性的检验 ,同时利用Jaccard指数测定各种对间的关联度。结果表明 ,除山楂 (Crataeguspin natifida)与黄菠萝 (Phellodendronamurense)存在显著正关联外 ,其它种对联结性都较低。经进一步测定联结度后发现榆树 (Olmuspumila)与油松 (Pinustabulacformis)、蒙古栎 (Quer cusmongolica)、山楂、黄菠萝、稠李 (Prunuspadus)负向联结程度较高更多还原

【Abstract】 test and Jaccard Indices were used together with a 2×2 contingeney table in order to analyze the interspecific associations of 10 species in Pinus tabulacformis Quercus mongolica communities in Tianzhu Moutain,Liaoning Province. The results indicated that the association of 10 species was of little significant level except for Crataegus pinnatifida and Phellodendron amurense,which showed significantly positive correlation.Further tests showed that there was a high negative association between Olmus punila Pinus tabulacformi, or Quercus mongolica, Crataegus pinnatifida, Phellodendron amurense,Prunus padus .更多还原