Wang Xueying, Li Guixiang, Zhang Yuxin, Ma Keming
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Microorganisms. 2021 Nov 2;9(11):2280. doi: 10.3390/microorganisms9112280.
The treeline is a sensitive region of the terrestrial ecosystem responding to climate change. However, studies on the composition and formation mechanisms of soil fungal communities across the treeline are still lacking. In this study, we investigated the patterns of soil fungal community composition and interactions among functional guilds above and below the treeline using Illumina high-throughput sequencing and ecological network analysis. The results showed that there were significant differences in the soil environment and soil fungal community composition between the two ecosystems above and below the treeline. At the local scale of this study, geographic distance and environmental factors affected the composition of the soil fungal community. Soil temperature was an important environmental predictor of soil fungal community composition. Species in soil fungal communities in the subalpine meadow were more closely related to each other compared to those in the montane forest. Furthermore, the soil fungal community in montane forest was more stable. Our findings contribute to a better understanding of how mountain ecological functions respond to global climate change.
树线是陆地生态系统中对气候变化敏感的区域。然而，关于整个树线土壤真菌群落的组成和形成机制的研究仍然缺乏。在本研究中，我们使用Illumina高通量测序和生态网络分析，研究了树线上下土壤真菌群落组成模式以及功能类群之间的相互作用。结果表明，树线上下两个生态系统的土壤环境和土壤真菌群落组成存在显著差异。在本研究的局部尺度上，地理距离和环境因素影响了土壤真菌群落的组成。土壤温度是土壤真菌群落组成的重要环境预测因子。与山地森林相比，亚高山草甸土壤真菌群落中的物种彼此之间的关系更为密切。此外，山地森林中的土壤真菌群落更稳定。我们的研究结果有助于更好地理解山地生态功能如何应对全球气候变化。
