Ecology and Environment ›› 2022, Vol. 31 ›› Issue (2): 239-247.DOI: 10.16258/j.cnki.1674-5906.2022.02.004

• Research Articles • Previous Articles     Next Articles

Distribution of Soil Fungal Diversity and Community Structure in Different Vegetation Types on the Eastern Slopes of Helan Mountains

YANG Hu1(), WANG Peiyao1, LI Xiaowei1, WANG Jifei2, YANG Junlong1,*()   

  1. 1. School of Agriculture, Ningxia University, Yinchuan 750021, P. R. China
    2. Ningxia Helan Mountains National Nature Reserve Management Bureau, Yinchuan 750021, P. R. China
  • Received:2021-08-04 Online:2022-02-18 Published:2022-04-14
  • Contact: YANG Junlong

贺兰山东坡不同植被类型的土壤真菌多样性及其群落结构

杨虎1(), 王佩瑶1, 李小伟1, 王继飞2, 杨君珑1,*()   

  1. 1.宁夏大学农学院,宁夏 银川 750021
    2.宁夏贺兰山国家级自然保护区管理局,宁夏 银川 750021
  • 通讯作者: 杨君珑
  • 作者简介:杨虎(1996年生),男,硕士研究生,研究方向为土壤微生物。E-mail: 1986340981@qq.com
  • 基金资助:
    国家自然科学基金项目(31860122);中央引导地方科技创新项目;宁夏珍稀濒危植物调查项目(2021)

Abstract:

The aim of the present study was to probe into the changes of soil fungal diversity of four vegetation types on the eastern slope of Helan mountains by using high-throughput sequencing technology. The results showed that: (1) the α diversity of soil fungi communities in subalpine coniferous forests was lower than that in shallow mountain shrubs, mountain desert grasslands, and subalpine meadows. (2) The fungi accounted for a relative abundance of 1% including the dominant taxa of Ascomycota, Basidiomycota, Mortierellomycota, Glomeromycota and Chytridiomycota. Among them, Ascomycota and Basidiomycota are the main dominant flora, with an average abundance ratio of 46.7% and 29.6%, respectively. There was significantly higher abundance of Basidiomycota in subalpine coniferous forests than in other vegetation types. The Ascomycota abundance was significantly higher in mountain desert grasslands, shallow mountain shrubs, and subalpine meadows than in subalpine coniferous forests. (3) Based on the correlation analyses results, soil fungal community composition was correlated with plant diversity index, average annual temperature, annual rainfall, soil pH, soil organic carbon, and soil moisture content. The results of Pearson correlation analyses suggested that plant diversity was the key factor forcing the distribution of fungal diversity among the four vegetation types.

Key words: Helan Mountain, vegetation type, fungal diversity, fungal community, high-throughput sequencing

摘要:

为了解植被对土壤真菌群落结构及其优势菌群影响,利用高通量测序技术,研究了贺兰山东坡山地荒漠草地、浅山灌丛、亚高山针叶林和亚高山草甸4种植被类型土壤真菌多样性及其群落结构。结果表明,(1)贺兰山东坡不同植被类型土壤真菌α多样性由高到低依次为浅山灌丛、山地荒漠草地、亚高山草甸、亚高山针叶林;且亚高山针叶林显著低于其他植被类型。(2)相对丰度1%的真菌共检测到子囊菌门(Ascomycota)、担子菌门(Basidiomycota)、被孢霉门(Mortierellomycota)、球囊菌门(Glomeromycota)、壶菌门(Chytridiomycota)5个门类,其中子囊菌门和担子菌门为主要优势菌群,平均丰度占比分别为46.7%和29.6%;担子菌门在亚高山针叶林中丰度显著高于其他菌门,子囊菌门在山地荒漠草地、浅山灌丛和亚高山草甸植被类型中显著高于其他菌门。(3)从土壤真菌群落组成与环境因子相关性分析可知,植物多样性、pH、年均温、土壤有机质、年均降雨量、土壤含水率及海拔都会显著影响到真菌群落组成;从真菌α多样性指数与植物多样性指数和海拔Pearson相关性分析可知,植物多样性是影响真菌多样性的主要因子。

关键词: 贺兰山, 植被类型, 真菌多样性, 真菌群落, 高通量测序

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