生态学报2025，Vol.45Issue(7)：3330-3340,11.DOI:10.20103/j.stxb.202403120504
浙江婺城南山落叶阔叶林树冠互补性对群落多样性的影响
Effects of crown complementarity on community diversity in the Nanshan deciduous broadleaf forest,Zhejiang Province,China
摘要
Abstract
Niche differentiation and habitat filtering are fundamental to species coexistence and biodiversity maintenance within forest communities.The highly complex crown structure of forest communities can be seen as direct partitioning within spatial niche dimensions.However,few studies have directly assessed the contribution of crown complementarity to biodiversity of forest communities.In this study,by using community survey data combined with tree individual crown data from a 1 hm2 dynamic monitoring plot in 2023,we evaluated the effects of crown complementarity and topographic factors on the diversity of the Nanshan deciduous broadleaf forest community in Wucheng,Zhejiang Province.The results showed that:(1)Increased crown complementarity enhanced species diversity and tree height variation,and also made the deep phylogenetic structure more divergent,indicating that crown complementarity reflected the vertical niche differentiation of forest community,and tended to participate in the construction process of phylogenetic structure in the long-term historical evolution.(2)Elevation was the most important topographic factor influencing community diversity,showing negative correlations with both species diversity and structural diversity,leading to a clustering trend in phylogenetic structure.(3)Crown complementarity and topographic factors jointly influenced species diversity,phylogenetic diversity,and structural diversity in forest communities.Crown complementarity accounted for 43.24％,31.22％,50.16％,49.84％,and 53.60％of the explainable variance in the Shannon-Wiener index,Pielou's evenness index,Net Relatedness Index(NRI),Nearest Taxon Index(NTI),and coefficient of variation of tree height,respectively.However,its contribution to the explainable variance in DBH coefficient of variation was only 0.30％.In sum,we found that the increase of crown complementarity in Nanshan deciduous broadleaf forest is beneficial to the maintenance of community biodiversity.Our study suggests that including canopy complementarity in assessments of the effects of biotic and abiotic factors on biodiversity in forest communities can deepen our understanding of the mechanisms of biodiversity maintenance.关键词
生态位分化/生境过滤/树冠结构/树冠互补性/群落多样性Key words
niche differentiation/habitat filtering/crown structure/crown complementarity/community diversity引用本文复制引用
吴奇,符蝶,王云泉,问青青,庄前进,陈建华,傅佳琴,谢家杰,施怡珊,张雨宁,曾子君..浙江婺城南山落叶阔叶林树冠互补性对群落多样性的影响[J].生态学报,2025,45(7):3330-3340,11.基金项目
浙江省"尖兵""领雁"研发攻关计划(2023C03137) （2023C03137）
浙江省自然科学基金探索项目(LQ22C030001) （LQ22C030001）
浙江省大学生科技创新活动计划(新苗人才计划)项目(2024R404A014) （新苗人才计划）
婺城南山省级自然保护区野生动植物网格化监测项目 （）
