内蒙古不同类型草原土壤真菌群落结构及其影响因子的研究

doi:10.11733/j.issn.1007-0435.2023.07.007

草地学报 ›› 2023, Vol. 31 ›› Issue (7): 1977-1987.DOI: 10.11733/j.issn.1007-0435.2023.07.007

内蒙古不同类型草原土壤真菌群落结构及其影响因子的研究

徐林芳^1,2, 米媛婷³, 柳兰洲^1,2, 温璐^1,2, 李永宏^1,2, 许继飞^1,2

1. 内蒙古大学生态与环境学院, 内蒙古呼和浩特 010021;
2. 蒙古高原生态学与资源利用教育部重点实验室, 内蒙古呼和浩特 010021;
3. 内蒙古机电职业技术学院, 内蒙古呼和浩特 010070

收稿日期:2023-01-05 修回日期:2023-03-07 出版日期:2023-07-15 发布日期:2023-08-01
通讯作者: 许继飞,E-mail:jifeixu@imu.edu.cn
作者简介:徐林芳(1998-),女,汉族,河南驻马店人,硕士研究生,主要从事微生物生态研究,E-mail:xulfang@163.com
基金资助:
国家自然科学基金(31960249)；内蒙古自然科学基金(2020MS05003)资助

Study on the Struture and Driving Factors of Soil Fungal Community in Different Grassland Types in Inner Mongolia

XU Lin-fang^1,2, MI Yuan-ting³, LIU Lan-zhou^1,2, WEN Lu^1,2, LI Yong-hong^1,2, XU Ji-fei^1,2

1. School of Ecology and Environment, Inner Mongolia University, Hohhot, Inner Mongolia 010021, China;
2. Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, Hohhot, Inner Mongolia 010021, China;
3. Inner Mongolia Technical College Mechanics and Electrics, Hohhot, Inner Mongolia 010070, China

Received:2023-01-05 Revised:2023-03-07 Online:2023-07-15 Published:2023-08-01

摘要/Abstract

摘要： 为探究内蒙古不同类型草原土壤真菌群落结构及其影响因子，以内蒙古中东部自西向东连续分布的荒漠-典型-草甸草原为研究对象，采用高通量测序的方法分析土壤真菌群落特征，结合土壤理化性质揭示真菌群落的驱动因子。结果表明：三种草原的土壤均呈碱性且以沙粒为主，土壤含水率差异显著(P＜0.05)；荒漠草原土壤养分含量(土壤有机质、总氮和总磷)最低，草甸草原土壤养分含量最高；荒漠草原土壤真菌的Shannon指数、Chao 1指数和Pielou均匀度指数最高；不同类型草原土壤真菌群落结构具有显著差异(P＜0.05)；子囊菌门(Ascomycota)、担子菌门(Basidiomycota)、被孢霉门(Mortierellomycota)和壶菌门(Chytridiomycota)是优势真菌门；被孢霉属(Mortierella)和镰刀菌属(Fusarium)是共有优势属；草原土壤真菌以腐生营养型为主，主要功能群丰度无明显差异；冗余分析表明土壤含水率是不同类型草原土壤真菌群落的主要驱动因子。

关键词: 草原类型, 土壤真菌, 群落结构, 功能预测, 环境因子

Abstract: In order to explore the structure and driving factors of soil fungal community in different grasslands types in Inner Mongolia,we studied the desert-typical-meadow steppes in Inner Mongolia,which were distributed continuously from west to east. High-throughput sequencing was used to analyze the characteristics of soil fungal community and reveal the driving factors of fungal community in combination with soil physical and chemical properties. The results showed that the soil was alkaline and mainly sandy texture in the three types of grasslands,and the soil moisture content was significantly different (P＜0.05). The soil nutrient content (soil organic matter,total nitrogen,and total phosphorus) was the lowest in desert steppe. The Shannon index,Chao 1 index,and Pielou evenness index of soil fungal communities in desert steppe were the highest. There were significant differences in soil fungal community structure of different types of grasslands (P＜0.05). Ascomycota,Basidiomycota,Mortierellomycota,and Chytridiomycota were the dominant fungal phyla. Mortierella and Fusarium were the common dominant genera. The Saprotroph fungi were dominant in grassland soil,and there was no significant difference in the abundance of major functional groups. Redundancy analysis suggested that soil moisture content was the main driving factor of soil fungal communities in different types of grasslands in Inner Mongolia.

Key words: Grassland types, Soil fungi, Community structure, Function prediction, Environmental factors

中图分类号:

S154.3

徐林芳, 米媛婷, 柳兰洲, 温璐, 李永宏, 许继飞. 内蒙古不同类型草原土壤真菌群落结构及其影响因子的研究[J]. 草地学报, 2023, 31(7): 1977-1987.

XU Lin-fang, MI Yuan-ting, LIU Lan-zhou, WEN Lu, LI Yong-hong, XU Ji-fei. Study on the Struture and Driving Factors of Soil Fungal Community in Different Grassland Types in Inner Mongolia[J]. Acta Agrestia Sinica, 2023, 31(7): 1977-1987.

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内蒙古不同类型草原土壤真菌群落结构及其影响因子的研究

Study on the Struture and Driving Factors of Soil Fungal Community in Different Grassland Types in Inner Mongolia

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