元宝山冷杉冬季根际土壤微生物沿海拔梯度的变化特征  

Variation characteristics of rhizosphere soil microorganisms of Abies yuanbaoshanensis along altitude gradient in winter

作　　者：王莹 丁涛[2,4] 周龙武 邓敏敏 杨宇萍 刘世男 WANG Ying;DING Tao;ZHOU Longwu;DENG Minmin;YANG Yuping;LIU Shinan(College of Forestry,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Karst Plant Conservation and Restoration Ecology,Guangxi Institute of Botany,Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences,Guilin 541006,Guangxi,China;Management Center of Yuanbaoshan National Nature Reserve,Rongshui Miao Autonomous County,Liuzhou 545300,Guangxi,China;Guangxi Field Scientific Observation and Research Station of Xing’an Lijiang River Source Forest Ecosystem,Guilin 541316,Guangxi,China)

机构地区：[1]广西大学林学院,南宁530004 [2]广西壮族自治区中国科学院广西植物研究所,广西喀斯特植物保育与恢复生态学重点实验室,广西桂林541006 [3]融水苗族自治县元宝山国家级自然保护区管理中心,广西柳州545300 [4]桂林兴安漓江源森林生态系统广西野外科学观测研究站,广西桂林541316

出　　处：《广西植物》2025年第1期147-160,共14页Guihaia

基　　金：广西青年科学基金项目(2021GXNSFBA196062)。

摘　　要：为探究海拔对元宝山冷杉(Abies yuanbaoshanensis)根际土壤微生物群落的影响,该研究通过Illumina Miseq高通量测序技术分析不同海拔梯度下元宝山冷杉冬季根际土壤微生物群落组成、多样性及其影响因子的变化。结果表明:(1)海拔对理化性质影响显著(P<0.05)。(2)海拔对根际土壤微生物群落组成结构和多样性影响显著(P<0.05),随海拔的上升,细菌多样性呈现先上升后下降的趋势,真菌多样性呈现显著下降的趋势。(3)土壤根际微生物群落结构及其多样性与环境因子密切相关,土壤有机质、土壤全氮、土壤全钾、C∶N、C∶P、N∶P是影响微生物结构沿海拔变化的重要驱动因子(P<0.05),土壤全磷、C∶P和N∶P是影响微生物多样性沿海拔变化的重要驱动因子(P<0.05)。该研究从土壤微生物学角度为濒危植物元宝山冷杉的保护提供了科学依据,也为完善山地森林生态系统中微生物分布格局提供了数据支撑。To explore the effects of altitude on the rhizosphere soil microbial community of Abies yuanbaoshanensis,we utilized Illumina Miseq high-throughput sequencing technology to analyze the composition,diversity and influencing factors of the rhizosphere soil microbial community in winter across different altitude gradients.The results were as follows:(1)Altitude significantly affected the physicochemical properties(P<0.05).(2)Altitude had a significant impact on the composition and diversity of the rhizosphere soil microbial community(P<0.05),with bacterial diversity initially increasing before decreasing,while fungal diversity exhibited a significant decrease.(3)The structure and diversity of the rhizosphere soil microbial community were closely associated with environmental factors;soil organic matter,soil total nitrogen,soil total potassium,C∶N,C∶P,and N∶P were identified as important drivers influencing the microbial community structure along the altitude gradient(P<0.05),and total phosphorus,C∶P and N∶P were found to be significant drivers affecting microbial diversity along the altitude gradient(P<0.05).This study provides a scientific reference for the conservation of Abies yuanbaoshanensis,an endangered plant,and offers the data support for improving the fungal and bacterial distribution patterns in the mountain forest ecosystem.

关 键 词：元宝山冷杉 微生物多样性 海拔高度 高通量测序 土壤理化特性 

分 类 号：Q948[生物学—植物学]