生态学杂志2025，Vol.44Issue(1)：21-31,11.DOI:10.13292/j.1000-4890.202501.021
皆伐改造闽粤栲林下木本植物生态位特征和空间分布格局
Ecological niche characteristics and spatial distribution patterns of woody plants in the understory of Cas-tanopsis fissa forest after clear-cutting
摘要
Abstract
Ecological niche is a key indicator for the adaptive capacity of a species in the environment,offering in-sights into population status.Meanwhile,the spatial distribution of individuals provides crucial information for popu-lation dispersion characteristics and development trends.To clarify the regeneration dynamics of understory woody plant communities in a replanted broadleaved forest,we examined the woody species thriving beneath the replanted C.fissa forest,which was established 23 years ago after the clear-cutting of low-yield and low-efficiency Cunning-hamia lanceolata plantation in Jianyang State-owned Forest Farm of Nanping City.Levins niche breadth and Pianka's niche overlap were used to analyze the niche characteristics of species.Seven aggregation indices were employed to explore the spatial distribution pattern of dominant species with importance values greater than 1.The results showed that:(1)the seedlings of C.fissa were predominant in the understory community,with the largest importance value and niche breadth,which were 115.30％and 1.00 respectively.A substantial niche overlap was observed with other species,which maintained its dominant position with the upper canopy species.(2)There were no correlations between the importance values,niche breadths and niche overlaps.The niche overlap values among species pairs were distributed within the range of[0,1],with most of the species pairs displaying significant over-lap(0.5≤Oik＜1).(3)Most understory woody species were clustered in spatial distribution,and a few showed even distribution.The influence of different scales on the spatial distribution pattern of the populations within the small-scale range was mainly manifested in the change of clustering intensity.In general,the natural recovery of understory woody plants was at good condition,the interspecific relationship was stable,and the understory vegeta-tion was in the stage of succession recovery.关键词
皆伐更新/林下木本植物/闽粤栲/生态位/空间分布格局Key words
clear-cutting regeneration/understory woody plant/Castanopsis fissa/niche/spatial distribution pat-tern引用本文复制引用
吴巧云,吴承祯,林晗,陈灿,范海兰,张斌,何俊,方晨,袁锋,王英姿..皆伐改造闽粤栲林下木本植物生态位特征和空间分布格局[J].生态学杂志,2025,44(1):21-31,11.基金项目
福建省林业科技项目(2021FKJ22)、福州市科技项目(榕科[2021]266号)和福建农林大学优秀研究生学位论文资助基金(1122YS01010)资助. （2021FKJ22）
