Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2025, Vol. 33 ›› Issue (1): 87-97.DOI: 10.11733/j.issn.1007-0435.2025.01.011

Previous Articles    

Effects of Moss Crust on Soil Nutrients and Microbial Community Structure in Alpine Meadow

KOU Wei-liang1, YANG Wen-quan2, LI Xiao2, LIU Jia-qing1, JIANG Bing-qing2, LU Chang-tao2, LI Jia-jing3, LI Xi-lai4, KOU Jian-cun1   

  1. 1. College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
    2. College of Life Sciences, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
    3. College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
    4. College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province 810016, China
  • Received:2024-04-25 Revised:2024-06-08 Published:2025-01-22

苔藓结皮对高寒草甸土壤养分及微生物群落结构的影响

寇伟良1, 杨文权2, 李霄2, 刘家庆1, 蒋冰青2, 路昌涛2, 李佳静3, 李希来4, 寇建村1   

  1. 1. 西北农林科技大学草业与草原学院, 陕西 杨凌 712100;
    2. 西北农林科技大学生命科学学院, 陕西 杨凌 712100;
    3. 西北农林科技大学风景园林艺术学院, 陕西 杨凌 712100;
    4. 青海大学农牧学院, 青海 西宁 810016
  • 通讯作者: 寇建村,E-mail：jiancun02@163.com
  • 作者简介:寇伟良（1998-）,男,汉族,甘肃天水人,硕士研究生,主要从事草地生态恢复研究,E-mail：KWL1998@nwafu.edu.cn
  • 基金资助:
    国家自然科学联合基金项目（U21A20191）；大学生创新创业训练计划项目（S202310712607）资助

PDF

Abstract: Moss crust is an important component of plant community in alpine meadow. To explore the effects of moss crust on soil properties in alpine meadow, the soils of the moss crust on the different slopes （the flat, the gentle and the steep） of alpine meadows were taken as the treatments, while the soil without moss crust was taken as the controls. The effects of the moss crust on the soil nutrients and soil microbial community structure were studied. The results showed that the contents of organic matter （20.4%-100.7%）, nitrate nitrogen （64.9%-161.5%）, ammonium nitrogen （93.8%-236.1%）, available potassium （24.3%-50.7%） and total nitrogen （47.0%-67.0%） in the alpine meadow soil under moss crust were significantly increased （P<0.05）. The moss crust increased the relative abundance of Acidobacteria and Chloroflexi, the richness and diversity of soil bacterial community, while it decreased the relative abundance of Mortierellomycota of all the treatments and Ascomycota of soils in slopes, the richness and diversity of soil fungal community. The soil nutrients and microbial communities of the moss-covered alpine meadow were also affected by the slope, and the bacterial diversity was highest in the flat land. The most soils on the gentle slope had the higher nutrient content, and the highest soil fungal diversity. Therefore, the moss crust can improve the fertility and microbial community structure of the soil in the alpine meadow, and plays an important role in the maintenance and succession of the alpine meadow ecosystem. And the effect is related to the slope.

Key words: Alpine meadow, Moss crust, Soil nutrients, Microorganism, Community structure

摘要： 苔藓是高寒草甸中重要的植物群落组成部分。为探究苔藓结皮对高寒草甸土壤特性的影响,以高寒草甸不同坡度（平地、缓坡、陡坡）苔藓结皮土壤为研究对象,以没有苔藓结皮的土壤为对照,研究苔藓结皮对高寒草甸土壤养分和微生物群落结构的影响。结果表明：苔藓结皮覆盖显著（P<0.05）提高了高寒草甸土壤中有机质（20.4%~100.7%）、硝态氮（64.9%~161.5%）、铵态氮（93.8%~236.1%）、速效钾（24.3%~50.7%）和全氮（47.0%~67.0%）等养分含量；提高了土壤中酸杆菌门（Acidobacteria）和绿弯菌门（Chloroflexi）的相对丰度,增加了土壤细菌群落的丰富度和多样性,降低了土壤中鞭毛菌门（Mortierellomycota）和坡地子囊菌门（Ascomycota）的相对丰度,降低了土壤真菌群落的丰富度和多样性；苔藓结皮覆盖后的高寒草甸土壤养分和微生物群落也受到坡度的影响,细菌多样性在平地中最高,缓坡地中多数土壤养分含量较高且真菌多样性也为最高。因此,苔藓结皮可以改善高寒草甸的土壤肥力和土壤微生物群落结构,在高寒草甸生态系统维持和演替中具有重要作用,这种作用和坡度有关。

关键词: 高寒草甸, 苔藓结皮, 土壤养分, 微生物, 群落结构

CLC Number: