草地学报 ›› 2022, Vol. 30 ›› Issue (1): 21-28.DOI: 10.11733/j.issn.1007-0435.2022.01.003

• 研究论文 • 上一篇    

藏北高寒草地土壤真菌群落系统发育多样性对放牧的响应

张豪睿1,2, 付刚1   

  1. 1. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室拉萨高原生态系统研究站,北京 100101;
    2. 中国科学院大学,北京 100049
  • 收稿日期:2021-06-01 修回日期:2021-08-14 发布日期:2022-01-27
  • 通讯作者: 付刚, E-mail: fugang@igsnrr.ac.cn
  • 作者简介:张豪睿(1996-),女,汉族,山东德州人,博士,主要从事全球变化生态学研究,E-mail: zhanghr.18s@igsnrr.ac.cn
  • 基金资助:
    中国科学院青年创新促进会会员(2020054);国家重点研发项目(2017YFA0604801);中国科学院地理科学与资源研究所秉维优秀青年人才(2018RC202);国家自然科学基金(31600432);西藏自治区饲草专项(XZ202101ZD0003 N);西藏自治区自然科学基金(XZ2019ZR G-155)资助

Responses of Phylogenetic Diversity of Soil Fungal Community to Grazing in Alpine Grasslands of the Northern Tibet

ZHANG Hao-rui1,2, FU Gang1   

  1. 1. Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-06-01 Revised:2021-08-14 Published:2022-01-27

摘要: 本研究依托沿海拔梯度布设的三个配对的围栏和自由放牧样地探讨了土壤真菌系统发育多样性对放牧的响应规律。结果表明:暖季放牧和冷季放牧都没有改变高寒草原化草甸土壤真菌系统发育α多样性,暖季放牧也没有改变高寒草甸土壤真菌系统发育α多样性;暖季放牧和冷季放牧都显著改变了高寒草原化草甸土壤真菌群落系统发育结构,且暖季放牧也显著改变了高寒草甸土壤真菌群落系统发育结构;放牧使得两个高寒草原化草甸土壤真菌群落系统发育结构更相似,这可能与放牧条件下两个高寒草原化草甸的土壤含水量的相似性的增加有关。因此,冷季放牧和暖季放牧对高寒草原化草甸的土壤真菌群落系统发育多样性的影响不同;高寒草原化草甸和高寒草甸土壤真菌群落系统发育多样性对暖季放牧的响应也不同;放牧改变了土壤真菌群落系统发育β多样性的海拔分布格局。

关键词: 生物多样性, 生物地理格局, 系统发育多样性, 土壤真菌, 季节性放牧, 草地类型, 青藏高原

Abstract: Investigating the phylogenetic diversity of soil fungal community under grazing conditions can provide guidance for the optimal management of grassland grazing. In this study, the responses of the phylogenetic diversity of soil fungal community to grazing were compared in three paired fenced and free grazing sites. The results showed that warm-season grazing and cold-season grazing did not significantly change the phylogenetic α diversity of soil fungal community in the alpine steppe meadow, and warm-season grazing did not significantly change the phylogenetic α diversity of soil fungal community in the alpine meadow. Both warm-season grazing and cold-season grazing significantly changed the phylogenetic structure of soil fungal community in the alpine steppe meadow, and warm-season grazing also significantly changed the phylogenetic structure of soil fungal community in the alpine meadow. The phylogenetic structure of soil fungal community was mainly affected by changing the phylogenetic structure of different phyla. The phylogenetic structure of soil fungal communities in the two alpine steppe meadows got more and more similar due to grazing, which might be related to the increasing similarity of soil water content between the two alpine steppe meadows under grazing conditions. Therefore, the effects of cold-season grazing and warm-season grazing on soil fungal phylogenetic diversity in the alpine steppe meadow were different, and the responses of soil fungal phylogenetic diversity in the alpine steppe meadow and the alpine meadow to warm-season grazing were different. In addition, grazing changed the altitudinal pattern of phylogenetic β diversity of soil fungal communities.

Key words: Biodiversity, Biogeographic pattern, Phylogenetic diversity, Soil fungi, Seasonal grazing, Grassland type, Qinghai-Tibet Plateau

中图分类号: