【摘要】 以吉林松花江三湖国家级自然保护区紫椴红松林为研究对象，采用总体相关性检验(VR)、χ~2检验、联结系数(AC)、共同出现百分率(PC)和点相关系数(Ф)分析群落主要乔木树种在5个层级(Ⅰ级幼苗、Ⅱ级幼树、Ⅲ级小径树、Ⅳ级中径树、Ⅴ级大树)的种间关系。结果表明：主要乔木树种总体相关性为显著正联结，各层级VR介于0.84～1.59;χ~2检验结果显示，紫椴-红松在各层级均为不显著联结，二者在Ⅰ、Ⅲ、Ⅳ层级为正联结，在Ⅱ和Ⅴ层级为负联结。主要树种种间关系大多不显著，由Ⅰ级幼苗至V级大树不显著联结种对数占比增加；在Ⅱ和Ⅳ层级，负联结种对数占比最大；AC、PC和Ф值也均表明，紫椴-红松间虽然存在一定联结但联结程度较弱，其他主要树种种间关系多数处于松散的独立状态。总体而言，紫椴红松林群落主要乔木树种已建立了良好的种间关系，可相对稳定地共同利用林地资源。更多还原

【Abstract】 The interspecific relationships among the main trees in Tilia amurensis and Pinus koraiensis forest in Administration of Songhua River Sanhu National Nature Reserve, Jilin Province were analyzed by using various statistical methods including the overall correlation test（VR）,χ² test, association coefficient（AC）,percentage of co-occurrence（PC）,and point correlation coefficient（Ф） across five levels（seedling I,sapling Ⅱ,small diameter tree Ⅲ,medium diameter tree Ⅳ and tree class Ⅴ）.The results indicated a significantly positive overall correlation among the main tree species, with VR values ranging from 0.84 to 1.59 across different levels.χ² test revealed that Tilia amurensis and Pinus koraiensis did not show significant connections at all levels.Positive correlations were observed among levels Ⅰ,Ⅲ and Ⅳ,while negative correlations were found between levels Ⅱ and Ⅴ.Most interspecific relationships among the main tree species were not statistically significant, with the proportion of insignificantly associated species pairs increasing from seedling to class tree levels.However, at levels Ⅱ and Ⅳ,the proportion of negatively associated species pairs was the highest.AC,PC and Ф values indicated a relatively weak association between Tilia amurensis and Pinus koraiensis,while most of the interspe-cific relationships among other main tree species appeared to be loosely connected and independent.Overall, the main tree species in Tilia amurensis and Pinus koraiensis forest community have established a relatively stable interspecific relationship, enabling to utilize woodland resources together effectively.更多还原