北京林业大学学报2025，Vol.47Issue(5)：83-91,9.DOI:10.12171/j.1000-1522.20240392
毛乌素沙地不同林龄樟子松人工林土壤真菌组成与群落构建过程
Soil fungal composition and community construction process of different aged Pinus sylvestris var.mongolica plantations in the Mu Us Desert,Shaanxi Province of northwestern China
摘要
Abstract
[Objective]To explore the composition and assembly process of soil fungal communities in Pinus sylvestris var.mongolica plantations of different ages in the Mu Us Sandy Land,Shaanxi Province of northwestern China and to reveal the effects of stand age on composition and function of soil fungi.[Method]Soil samples were collected associated with 26,32,43 years old P.sylvestris var.mongolica plantations in the Mu Us Desert to identify and analyze the composition,diversity,assembly and function of soil fungal communities based on field investigation,Illumina Miseq high-throughput,iCAMP and FUNGuild platform.[Result](1)No significant difference in the α diversity or β diversity of soil fungal communities was detected for P.sylvestris var.mongolica with stand aging(P＞0.05).A total of 285 genera of soil fungi from 5 phylums,23 phylums,62 orders,133 families were obtained,and the highest relative abundance of soil fungi of different forest ages were all from Inocybe.With the increase in forest age,the relative abundance of Genabea,Pulvinula and Sphaerosporella increased significantly.(2)In soil fungi,in addition to other trophic types,symbiotic trophic types dominated,followed by saprophytic trophic types.There was a significant increase in relative abundance of symbiotic fungi(P＜0.05),and the saprotrophic fungi decreased significantly(P＜0.05)with increasing forest age.No significant correlation(P＞0.05)was found between soil physical and chemical properties and soil fungal functions.The community assembly process of soil fungi in P.sylvestris var.mongolica plantations of different forest ages was mainly dominated by diffusion limitation.[Conclusion]In Pinus sylvestris var.mongolica plantations of the Mu Us Sandy Land,as forest age increases,the soil fungal community structure becomes more similar and stable.The function of soil fungi is more favorable to tree growth.The community assembly is mainly influenced by fungal birth,death,migration and emigration.关键词
樟子松/土壤真菌/群落组成/群落构建/功能特征Key words
Pinus sylvestris var.mongolica/soil fungi/community composition/community construction/functional characteristics分类
林学引用本文复制引用
鲁莹,李启研,王梓翔,高广磊,丁国栋,张英..毛乌素沙地不同林龄樟子松人工林土壤真菌组成与群落构建过程[J].北京林业大学学报,2025,47(5):83-91,9.基金项目
国家自然科学基金项目(32371962). （32371962）
