热带亚热带植物学报2024，Vol.32Issue(2)：187-197,11.DOI:10.11926/jtsb.4748
南亚热带森林不同林型功能性状分布格局及其驱动机制
Distribution Pattern of Functional Traits and Mechanisms in Different Forest Types of South Subtropics
摘要
Abstract
The growth,survival,reproduction,and spread of plants are significantly influenced by functional traits.Understanding the distribution pattern of plant functional traits is helpful to reveal the process of community construction and its internal mechanism.Twelve different functional traits of woody plants in Dinghu Mountain subtropical mountain evergreen broad-leaved forest and gully rainforest were collected and measured.The quadrats of 5 m×5 m,10 m×10 m and 20 m×20 m were used as scale units,respectively.The distribution pattern and driving mechanism of functional traits in communities were investigated by calculating mean pairwise trait distance(PW).The results showed that the 12 functional traits of the two forest types had different degrees of variation,but there was no significant difference between the communities(P>0.05).The spatial distribution pattern of functional traits in the two forest types was scale dependent,but the driving mechanism was different at different scales.With the increase of spatial scale,the main driving mechanism of spatial distribution pattern of functional traits in the mountain evergreen broad-leaved forest changed from environmental filtering to diffusion restriction.The environmental filtering and similarity restriction of ravine rainforest were changed to diffusion restriction,and both forest types were diffusion restriction at the spatial scale of 20 m×20 m.Niche differentiation and dispersal restriction were involved in the formation of community functional traits distribution pattern and community construction in the subtropical mountain evergreen broad-leaved forest and gully rainforest in Dinghu Mountain,and the contribution of both changes with spatial scale.Slope is the most important topographic factor affecting the distribution pattern of functional traits in mountain evergreen broad-leaved forest,and elevation is the most important topographic factor affecting gully rainforest.关键词
功能性状/分布格局/环境过滤/相似性限制/扩散限制Key words
Functional trait/Distribution pattern/Environmental filtration/Similarity limitation/Dispersal limitation引用本文复制引用
周景钢,李林,魏识广,练琚愉,叶万辉..南亚热带森林不同林型功能性状分布格局及其驱动机制[J].热带亚热带植物学报,2024,32(2):187-197,11.基金项目
广西自然科学基金面上项目(2020GXNSFAA159108,2022GXNSFAA035583) （2020GXNSFAA159108,2022GXNSFAA035583）
国家自然科学基金项目(32060305) （32060305）
广西师范大学珍稀濒危动植物生态与环境保护教育部重点实验室项目(ERESEP2021Z06)资助 This work was supported by the Project for Natural Science of Guangxi(Grant No.2020GXNSFAA159108,2022GXNSFAA035583),the National Natural Science Foundation of China(Grant No.32060305),and the Project of Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection,Ministry of Education,Guangxi Normal University(Grant No.ERESEP2021Z06). （ERESEP2021Z06）
