乌蒙山保护区连香树群落物种生态位与种间联结  

Ecological niche and interspecific association of species of Cercidiphyllum japonicum community in Yunnan Wumeng Mountain National Nature Reserve

作　　者：赵永丽 李飞巧 刘恩德[2] 李伟 ZHAO Yongli;LI Feiqiao;LIU Ende;LI Wei(Management and Conservation Bureau of Yunnan Wumeng Mountain National Nature Reserve,Zhaotong 657000,Yunan,China;Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,Yunnan,China)

机构地区：[1]云南乌蒙山国家级自然保护区管护局,云南昭通657000 [2]中国科学院昆明植物研究所,云南昆明650201

出　　处：《湖南林业科技》2024年第2期33-38,共6页Hunan Forestry Science & Technology

基　　金：中央财政林业改革发展资金项目(云林函〔2020〕56号)。

摘　　要：基于群落野外调查数据,利用生态位测度,方差比率、χ^(2)检验、Pearson相关系数检验、Spearman秩相关系数检验的方法,研究云南乌蒙山保护区连香树群落主要植物的生态位特征和种间联结特征。结果表明:群落中连香树生态位宽度最大,为乔木层优势种;灌木层主要物种为筇竹,草本层主要物种为骤尖楼梯草。乔木层总体种间呈现显著正联结,处于演替后期,较为稳定;连香树与群落中其他物种发生了生态位分离,联结关系均较弱。根据以上结果,建议加强对连香树生境地的保护,并适当扩繁连香树。Based on the data of the field survey of the community of Cercidiphyllum japonicum,the niche width,variance ratio,chi-square test,Pearson correlation coefficient test and Spearman rank correlation coefficient test were used to study the niche characteristics and interspecific association characteristics of main s pecies of C.japonicum community in Yunan Wumeng Mountain National Nature Reserve.The results showed that:The dominant species in the tree layer was C.japonicum,it occupied the largest niche width,the dominant species in the shrub layer was Chimonobambusa tumidissinoda,in the herb layer was Elatostema cuspidatum.The species showed significant positive interspecific association in the tree layer,that was in the late stage of succession and tended to be stable.The niche of C.japonicum were separated from other species in the community,and all the interspecific association relationship was weak.It s recommended to strengthen the protection of C.japonicum habitat and expand propagation.

关 键 词：连香树群落 生态位 种间联结 

分 类 号：Q949.746.4[生物学—植物学]