生态与农村环境学报2025，Vol.41Issue(3)：358-366,9.DOI:10.19741/j.issn.1673-4831.2024.0281
牯牛降常绿阔叶林群落结构、谱系结构及其影响因子
Population Structure and Spectral Structure of Broadleaf Evergreen Forests in the Guniujiang Mountain and A-nalysis of Their Influencing Factors
摘要
Abstract
The population structure and spectral structures of plant communities are influenced by both the spatial hetero-geneity of abiotic environmental factors and the interactions among organisms within the community.However,the relative importance of different influencing factors remains to be further understood.This study focused on the evergreen broad-leaved forest communities on the north and south slopes of Mt.Guniujiang in the West Huangshan Mountain range.Two 1-hectare permanent plots were established using a total station to spatially locate all tree individuals and determine microen-vironmental variables such as elevation and slope.In combination with a single-tree competition model,neighborhood com-petition index variables were obtained.By fitting generalized linear mixed-effects models and general linear models,multi-ple factors from two sets of variables(microenvironmental effects and neighborhood competition effects)were used as ex-planatory variables to measure differences in forest population structure and spectral structure on the north and south slopes.The results show:(1)Within this region,environmental differences between the north and south slopes had a cer-tain impact on the population structure and spectral structure of plant communities,with the north slope community being more species-rich and having closer spectral relationships.(2)The population structure and spectral structure of plant communities were jointly influenced by habitat filtering and neighborhood competition,which together drove the formation of species β diversity within the community.(3)The impact of environmental factors and neighborhood competition factors on population structure and spectral structure varied with life history stages.Trees are mainly influenced by neighborhood effects in the early stages of growth and by microenvironmental factors in the later stages,indicating that their resource ac-quisition strategies and responses to neighborhood competition effects and environmental factors are also changing.The re-sults of this study can provide a scientific reference for the biodiversity maintenance mechanisms in this region.关键词
谱系结构/微生境因子/邻域效应/广义线性混合效应模型Key words
spectral structure/microenvironmental factor/neighborhood effect/generalized linear mixed-effect model分类
林学引用本文复制引用
朱林,张昊楠,洪欣,陈达伟,秦卫华,周守标..牯牛降常绿阔叶林群落结构、谱系结构及其影响因子[J].生态与农村环境学报,2025,41(3):358-366,9.基金项目
生态环境部南京环境科学研究所创新团队建设项目(ZX2023QT022) （ZX2023QT022）
安徽省自然科学基金(1908085QC126) （1908085QC126）
