缙云黄芩与伴生物种的种间关联度分析  

Analysis of Interspecific Association for Scutellaria tsinyunensis and Its Associated Species

作　　者：陶琪[1] 吴思航[1] 马凯阳 邓洪平[1] 陶建平[1] 龙云[1] 

机构地区：[1]西南大学生命科学学院,重庆400715 [2]中国海洋大学附属中学,山东青岛266100

出　　处：《西北植物学报》2017年第5期974-982,共9页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家级大学生创新创业训练计划(201510635012);科技部国家科技基础条件平台国家标本平台教学标本子平台运行服务项目(2005DKA21403-JK)

摘　　要：缙云黄芩(Scutellaria tsinyunensis C.Y.Wu et Chow)是重庆特有濒危植物,也为极小种群物种。该研究采用2×2列联表、应用方差分析、χ~2统计量、Ochiai指数、Dice指数、Jaccard指数等计算方法,分析了缙云黄芩9个群落中草本层18种伴生物种与缙云黄芩的种间关联度,结合与其伴生物种的频度分布分析,以明确缙云黄芩及其伴生物种的频度分布及种间关联度,探讨其群落中主要草本物种与缙云黄芩的相互作用,为地方特有珍贵物种的保护和利用提供理论依据。结果表明:(1)缙云黄芩与其伴生物种在频度分布上与边缘鳞盖蕨以及蝴蝶花呈协同作用,与多序楼梯草、淡竹叶、蓝叶藤呈拮抗作用,与红盖鳞毛蕨部分呈协同作用、部分呈拮抗作用。(2)缙云黄芩群落总体关联度表明,6个群落呈现正关联,3个群落呈现负关联。(3)在48个种对中,34个种对显示为正关联,占总关联对数70.8%;14个种对之间表现为负关联,占总关联对数29.2%,其中显著正联结或负联结的种对仅3对,约占总数6.3%,极显著负联结种对仅1对。研究认为,寻找和保护与缙云黄芩正关联性较强的物种来共同形成利于特定物种生存的环境,或在野外将缙云黄芩移植到分布正关联物种的群落中有利于缙云黄芩野外扩繁。Scutellaria tsinyunensis C.Y.Wu et Chow is an endangered plant with extremely small populations of endemic species to Chongqing,and we studied the frequency distribution and interspecific association of it and its associated species.We measured the interspecific association between 18 species of herb layer and S.tsinyunensisin nine S.tsinyunensis communities with the help of the 2×2contingency table,variance analysis,X2-Statistics,Ochiai index,Dice and Jaccard index.Combined with the analysis of frequency distribution,we identified the frequency distribution and interspecific association of S.tsinyunensis and its associated species,and discussed the interaction between main herbaceous species in these communities and S.tsinyunensis,which provides a theoretical basis for the protection and utilization of endemic endangered species.The result shows that：（1）the frequency distribution of S.tsinyunensis and its associated species present that：S.tsinyunensis appears to have synergistic effect with Microlepia marginata andIrisjaponica,antagonistic effect with Elatostema macintyrei,Lophatherum gracile and Marsdenia tinctoria,while S.tsinyunensis and Dryopteris erythrosora show both synergistic effect and antagonistic effect.（2）The overall correlation dominant species of S.tsinyunensis communities indicate that：six communities present positive correlation,and the other two present negative correlation.（3）Among the 48 species pairs,34 pairs showed a positive correlation accounted for 70.8% of the total correlation pairs;14pairs showed a negative correlation accounted for 29.2% of the total correlation pairs;only 3pairs showed a significant positive or negative correlation accounted for 6.3% of the total correlation pairs;only 1pair showed a extremely significant negative connection.It is studied that building environment conducive to the survival of S.tsinyunensis by the way of search for protecting species who are positively correlated with this species,or transplanting them to the communities which dis

关 键 词：缙云黄芩 伴生物种 频度分布 种间关联度 

分 类 号：Q948.12[生物学—植物学]