江西农业大学学报2025，Vol.47Issue(2)：426-437,12.DOI:10.3724/aauj.2025038
常绿阔叶林树木生长与林元结构的关系
Relationship between tree growth and stand structure in evergreen broad-leaved forests
摘要
Abstract
[Objective]Studying the relationship between stand structure and tree growth at different stages in subtropical evergreen broad-leaved forests helps understand the dynamics and variability of tree development in spatial and temporal dimensions.This clarifies forest succession trends and provides significant guiding significance for vegetation restoration and optimizing stand structure.[Method]Taking the fixed monitoring plot of 2 hm2 evergreen broad-leaved forest in Qiyun Mountain as the research object,the trees in the sample plot were divided into four growth stages:sapling trees,small trees,middle trees and large trees,and three stand structure parameters,namely angular scale,mixed tree and dominance degree,were selected to explore the effects of stand structure on the annual average growth of all trees and trees of different life forms at different growth stages.[Result](1)The same stand structure parameters had a significant effect on the annual basal area growth rate of all trees at different growth stages(P<0.05),impacts become progressively smaller as trees increase in size class,while different stand structure parameters only had a significant effect on the dominance of young trees(P<0.05).(2)The same stand structure parameters had a significant effect on the average annual growth of saplings,small trees and middle trees of different life forms(P<0.05),due to that the angular scale had a significant effect on young and middle trees(P<0.05),the degree of mixing had a significant effect on small and middle trees(P<0.05),and the dominance degree had a significant effect on young and small trees(P<0.05).[Conclusion]Trees in evergreen broad-leaved forests are affected by the stand structure at different growth stages.Small-diameter trees are most affected,while the annual basal area growth rate of medium-diameter trees maintains stable growth,and large-diameter trees are less affected.Among different life forms,stand structure has a greater impact on deciduous trees.With the increase of diameter class,the average annual growth of basal area in deciduous tree species is gradually lower than that of evergreen tree species.This study suggests that the region is in the transition phase from mid-to-late succession stages to the climax stage,and measures can be reasonably formulated to optimize the spatial structure of forest metaspace according to the law of tree growth,and accelerate the development of forest succession to climax communitie through long-term monitoring and protection.关键词
森林演替/林元结构/树木动态生长/胸高断面积生长量Key words
forest succession/stand structure/tree dynamic growth/breast-height basal area increment分类
农业科技引用本文复制引用
廖婷,朱立辉,郑崇龙,黄彭玲,侯志琪,尹利栋,宋庆妮,刘骏,杨清培..常绿阔叶林树木生长与林元结构的关系[J].江西农业大学学报,2025,47(2):426-437,12.基金项目
国家自然科学基金项目(32260335)Project supported by the National Natural Science Foundation of China(32260335) （32260335）
