林业科学2025，Vol.61Issue(3)：72-85,14.DOI:10.11707/j.1001-7488.LYKX20240556
百山祖中山常绿阔叶林不同垂直层次优势种空间分布格局及关联性
Spatial Distribution Pattern and Correlation of Dominant Species at Different Vertical Levels in Baishanzu Mid-Mountain Evergreen Broad-Leaved Forest
摘要
Abstract
[Objective]To explore the spatial distribution pattern and correlation of dominant species at different height levels in the mid-mountain evergreen broad-leaved forest of Baishanzu National Park,so as to understand the survival strategies and competition mechanisms of each level in the vertical structure of the community,and to deepen the understanding of the construction and diversity maintenance mechanisms of the regional community.[Method]Based on the survey data of 1 hm2 monitoring plot of mid-mountain evergreen broad-leaved forest community in Baishanzu National Park,analyze the individuals of the top three dominant species in terms of importance value at each high level by tree height division.The pair correlation function g(r)and the marked correlation function kmm(r)based on diameter at breast height were used to analyze the spatial distribution pattern of dominant species at each height level and the correlation between the layers.Spearman rank correlation coefficient was used to analyze the correlation between population number distribution and topographic factors at each level.[Result]The dominant species in the community are affected by environmental factors,and their individual number distribution is positively correlated with topographic factors;the spatial distribution pattern of dominant species in each level of the community showed a trend of changing from low-scale aggregation to high-scale random or uniform distribution,and after removing the influence of habitat heterogeneity,the scale range of aggregation distribution was reduced;the upper layer dominant species showed low-scale negative correlation with those in the intermediate and lower layers;in the marked point pattern analysis based on the diameter at breast height,there was some negative correlation among individuals within and between the intermediate and lower layers at the low scale.[Conclusion]The dominant species of mid-mountain evergreen broad-leaved forest community in Baishanzu National Park exhibit a spatial pattern of aggregation at a low scale and random or uniform distribution at a high scale.The upper layer restricted the growth and development of individuals in the intermediate and lower layers at close distance,and there was resource competition between individuals in the intermediate and lower layers at low scale.关键词
群落结构/空间分布格局/空间关联性/标记相关函数/中山常绿阔叶林Key words
community structure/spatial distribution pattern/spatial correlation/marker correlation function/mid-mountain broadleaf evergreen forest分类
林学引用本文复制引用
程子翰,张金池,姜姜,孟苗婧,李珈印,罗梅,方向华..百山祖中山常绿阔叶林不同垂直层次优势种空间分布格局及关联性[J].林业科学,2025,61(3):72-85,14.基金项目
百山祖国家公园科学研究项目(2022JBGS03,2022JBGS06,2021ZDLY01). （2022JBGS03,2022JBGS06,2021ZDLY01）
