亚热带常绿阔叶林群落重建过程中林下物种组成及系统发育多样性分析

吴斌飞; 肖可琴; 胡展鹏; 葛之葳; 缪子梅

doi:10.12302/j.issn.1000-2006.202503015

吴斌飞, 肖可琴, 胡展鹏, 葛之葳, 缪子梅

南京林业大学学报（自然科学版） ›› 2026, Vol. 50 ›› Issue (5) : 189-198.

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南京林业大学学报（自然科学版） ›› 2026, Vol. 50 ›› Issue (5) : 189-198. DOI: 10.12302/j.issn.1000-2006.202503015

研究论文

亚热带常绿阔叶林群落重建过程中林下物种组成及系统发育多样性分析

吴斌飞 ¹ ,
肖可琴 ¹ ,
胡展鹏 ¹ ,
葛之葳 ² ,
缪子梅 ¹^,^*

作者信息 +

Understory species composition and phylogenetic diversity during subtropical evergreen broad-leaved forest restoration

Wu Binfei ¹ ,
Xiao Keqin ¹ ,
Hu Zhanpeng ¹ ,
Ge Zhiwei ² ,
Miao Zimei ¹^,^*

Author information +

文章历史 +

摘要

【目的】对比浙江黄岩山自然恢复30 a的次生林与天然林的物种组成及系统发育多样性差异,探讨其林下群落重建机制,为亚热带常绿阔叶林恢复提供理论依据。【方法】采用样地调查法,基于次生林与天然林林下乔灌草群落数据,通过计算物种多样性和系统发育多样性指数,分析其变化趋势及对土壤因子的影响,进一步揭示群落重建过程中的生态学机制。【结果】研究区次生林林下植被包含42科61属82种,天然林48科71属96种;天然林乔木层物种均匀度指数显著高于次生林(P<0.05),灌木层和草本层系统发育指数存在显著差异(P<0.01);两种林分中乔木层与灌木层植物系统发育结构主要呈聚集结构[最近种间亲缘关系指数(NTI)与系统发育多样性指数(NRI)均大于0],而草本层总体呈发散结构(NRI与NTI均小于0);土壤全磷含量是影响次生林林下各层次物种多样性与系统发育谱系结构变化的重要土壤因子(P<0.05),而土壤有效钾和有机质含量则与天然林的呈显著相关(P<0.05)。【结论】研究区次生林重建过程中乔木层物种群落构建方式偏向于随机扩散,而在天然林中以环境筛选为主,两种林分中灌木层群落构建动力源于非生物的环境过滤作用,草本层则以竞争排斥为主。建议在浙江黄岩山地区次生林恢复初期优先提升土壤磷素有效性,天然林管理则需重点维持表层土壤有机质周转与养分循环。

Abstract

【Objective】This study compared species composition and phylogenetic diversity between naturally restored (30-year) secondary forests and primary forests in Huangyanshan. It analyzed differences in understory community reassembly mechanisms. 【Method】The investigation employed a plot-based survey method collecting tree, shrub, and herb community data. Calculations determined species diversity indices and phylogenetic diversity indices. Analysis assessed trends in these indices and the influence of soil factors.This approach revealed ecological 82 species, while natural forests had 48 families, 71 genera, and 96 species. Natural forests showed significantly higher tree layer species evenness than secondary forests(P<0.05). Shrub and herb layers exhibited significant differences in phylogenetic diversity indices between forest types (P<0.01). Tree and shrub layers displayed clustered phylogenetic structures (nearest relatedness index(NRI)>0, nearest taxon index (NTI)>0) in both forests. Herb layers generally maintained over dispersed structures (NRI<0, NTI<0). Soil total phosphorus drove variations in species diversity and phylogenetic structure across all understory layers in secondary forests (P<0.05). Available soil potassium and organic matter significantly influenced these patterns in natural forests (P<0.05). 【Conclusion】Tree layer assembly favored stochastic dispersal during secondary forest restoration, while environmental filtering dominated in primary forests. Abiotic environmental filtering governed shrub layer dynamics across both forest types. Herb layer assembly primarily resulted from competitive exclusion. Managers should prioritize enhancing phosphorus availability in initial secondary forest recovery. Primary forest management must focus on maintaining topsoil organic matter turnover and nutrient cycling processes.

导出引用

吴斌飞, 肖可琴, 胡展鹏, 等. 亚热带常绿阔叶林群落重建过程中林下物种组成及系统发育多样性分析[J]. 南京林业大学学报（自然科学版）. 2026, 50(5): 189-198 https://doi.org/10.12302/j.issn.1000-2006.202503015

Wu Binfei, Xiao Keqin, Hu Zhanpeng, et al. Understory species composition and phylogenetic diversity during subtropical evergreen broad-leaved forest restoration[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2026, 50(5): 189-198 https://doi.org/10.12302/j.issn.1000-2006.202503015

中图分类号： S718.5

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