文献类型：期刊文献

中文题名：柚木林下套种草豆蔻对土壤真菌群落的影响

英文题名：Effect of intercropping Alpinia katsumadai on soil fungal community within a teak (Tectona grandis) plantation

作者：王先棒[1] 林明平[1] 李锦红[2] 李昆亮[1] 韩强[1] 何汶椿[1] 黄桂华[1]

第一作者：王先棒

机构：[1]中国林业科学研究院热带林业研究所,广东广州510520;[2]江门市古斗林场,广东江门529100

年份：2025

卷号：46

期号：1

起止页码：106-114

中文期刊名：华南农业大学学报

外文期刊名：Journal of South China Agricultural University

收录：;北大核心:【北大核心2023】；

基金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2021SY005)。

语种：中文

中文关键词：林药套种;真菌;群落结构;柚木;共现性网络

外文关键词：Intercropping of forest medicine;Fungus;Community structure;Teak;Co-occurrence network

分类号：S714

摘要：【目的】柚木Tectona grandis是热带珍贵树种之一,生长周期长,与药用植物套种是一种额外获得短期收益、达到“以短养长”的方法。因土壤微生物群落在土壤健康和质量方面有着重要作用,本文旨在探明柚木套种药用植物对土壤微生物群落的结构和功能影响,为柚木人工林科学经营和绿色发展提供理论参考。【方法】以柚木林下套种草豆蔻Alpinia katsumadai为研究对象,未套种草豆蔻的柚木为对照,通过采集两者根际土壤,利用高通量测序技术分析其真菌群落特征,从多样性指数、群落结构和组成、共现性网络来分析林药套种下土壤真菌群落的变化及差异。【结果】柚木套种草豆蔻处理相比未套种的土壤真菌群落多样性无显著变化,多样性指数(Chao1、Shannon、Observed_species和PD_whole_tree)差异不显著;但群落结构有显著不同,非度量多维尺度(NMDS)分析和主成分(PCA)分析显示柚木套种草豆蔻与未套种处理群落组成分离明显,线性判别分析(LEfSe)显示两者富集最多的类群不同;套种处理土壤真菌网络结构更加集中和复杂(网络节点数和正向边比例上升,模块化指数增加),子囊菌门和担子菌门分别为套种和未套种土壤真菌群落的中心响应类群。【结论】柚木林下套种草豆蔻对土壤真菌群落结构有显著影响,套种草豆蔻提升了柚木根际真菌群落的网络复杂性和集中程度,形成了更紧密的土壤微生物环境,研究结果可从微生物角度为柚木人工林套种及提升生产力提供理论指导。
Objective Teak(Tectona grandis)is one of the precious tree species in the tropics,it has a long growth cycle.Intercropping with medicinal plants is an effective way to achieve additional short-term benefits and to achieve the goal of“raising the short with the long”.Since soil microbial community plays an important role in soil health and quality,the purpose of this study is to investigate the effects of intercropping teak with medicinal plants on the structure and function of soil microbial community,and provide theoretical references for the scientific management and green development of teak plantations.Method This study investigated the effects of intercropping Alpinia katsumadai with teak in a forest plantation.A non-intercropped teak forest was used as a control.Soil samples were collected from the rhizospheres of both treatments and analyzed for fungal community characteristics using the high-throughput sequencing technology.The changes and differences in soil fungal communities under intercropping were analyzed based on diversity indices,community structure and composition,and co-occurrence networks.Result The diversity of soil fungal communities in teak intercropped with A.katsumadai did not change significantly compared to non-intercropped forests.The diversity indices(Chao1,Shannon,Observed_species,and PD_whole_tree)did not differ significantly.However,the community structure was significantly different.Non-metric multidimensional scaling(NMDS)and principal component analysis(PCA)showed that the community composition of teak intercropped with A.katsumadai was clearly separated from that of non-intercropped forests.Linear discriminant analysis effect size(LEfSe)analysis showed that the most enriched taxa in the two treatments were also different.Soil fungal network structure in the intercropped treatment was more concentrated and complex(the number of network nodes,the proportion of positive edges and the modularity index increased).Ascomycota and Basidiomycota were the central response taxa for soil fungal communities in intercropped and non-intercropped forests,respectively.Conclusion Intercropping with A.katsumadai significantly influences the soil fungal community structure in teak plantations.Intercropping A.katsumadai enhances the network complexity and centrality of the rhizosphere fungal community in teak,forming a more compact soil microbial environment.The research results can provide a theoretical guidance for teak plantation interplanting and improving productivity from the perspective of microorganisms.