东北林业大学学报2026，Vol.54Issue(7)：26-35,10.
茂兰喀斯特森林木本被子植物谱系多样性特点及驱动因素
Patterns and Driving Factors of Phylogenetic Diversity of Woody Angiosperms in Maolan Karst Forest
摘要
Abstract
Taking woody angiosperms in the Maolan Karst Forest as the research object,this study systematically analyzed the patterns and driving factors of phylogenetic α and β diversity at the overall community level and different diameter classes by adopting linear mixed-effects models and multiple regression analysis based on the Mantel test.The results showed that:(1)Community phylogenetic α diversity(SES.MPD,phylogenetic structure)and phylogenetic β diversity(SES.be-taMPD,phylogenetic compositional difference)of communities in all plots differed from the null expectation.(2)Regard-ing different topographic habitats,the communities on hilltops exhibited a convergent structure in both phylogenetic α di-versity(phylogenetic structure value＜0)and β diversity(phylogenetic compositional difference value＜0),while both phy-logenetic α and β diversity of mid-slope communities showed no significant deviation from the null expectation.(3)Com-munity phylogenetic α diversity decreased with the increase of soil calcium mass fraction,indicating a more clustered phy-logenetic structure,community β diversity increased with the difference in topography and rock bare rate,presenting grea-ter phylogenetic compositional dissimilarity.The findings suggest that habitat filtering mediated by topographic and soil conditions may serve as a crucial ecological process driving the community assembly of Maolan Karst Forest.关键词
群落构建/生境过滤/径级/茂兰国家级自然保护区Key words
Community assembly/Habitat filtering/Diameter class/Maolan National Nature Reserve分类
农业科技引用本文复制引用
陈秋菊,车俭,吴林艳,李荣,印智,姜银平,张潮,金毅..茂兰喀斯特森林木本被子植物谱系多样性特点及驱动因素[J].东北林业大学学报,2026,54(7):26-35,10.基金项目
国家自然科学基金项目(32360273) （32360273）
贵州省科学技术基金项目(黔科合基础(2020)1Z013) （黔科合基础(2020）
国家自然科学基金委员会一贵州省人民政府喀斯特科学研究中心项目(U1812401) （U1812401）
2026年自主培育项目(209-C426002). （209-C426002）
