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<p>Soil fungi play vital roles in soil health and ecosystem functioning. However, a comprehensive understanding of responses of soil fungal communities to urbanization in Guangzhou, China, is still lacking. Here, we employed amplicon sequencing to characterize soil fungal communities in 15 broad-leaved evergreen forest sites representing an urbanization gradient in Guangzhou, China. Our results showed that urbanization did not significantly affect soil fungal diversity but caused marked shifts in community composition, characterized by declines in plant-beneficial fungi (ectomycorrhizal, arbuscular mycorrhizal, and saprotrophic fungi) and increases in fungal plant pathogens. Urbanization also altered fungal community assembly by strengthening homogeneous selection and homogenizing dispersal while weakening dispersal limitation. Furthermore, fungal correlation networks became less complex and less stable with increasing urbanization. Collectively, these results suggest that urbanization can disrupt critical plant-fungi interactions and reduce the stability and resilience of soil fungal communities in urban ecosystems.</p>

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Impacts of urbanization on soil fungal communities in Guangzhou, China: Changes in composition, functional groups, community assembly, and network properties

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Shitao Xu,
  • Kexin Wang,
  • Fangjie Luo,
  • Caimao Luo,
  • Jing Luo,
  • Binger Li,
  • Yiran Xu,
  • Siwei Ye,
  • Linjing Yu,
  • Yiyuan Cao,
  • Ming Li,
  • Yongjian Chen

摘要

Soil fungi play vital roles in soil health and ecosystem functioning. However, a comprehensive understanding of responses of soil fungal communities to urbanization in Guangzhou, China, is still lacking. Here, we employed amplicon sequencing to characterize soil fungal communities in 15 broad-leaved evergreen forest sites representing an urbanization gradient in Guangzhou, China. Our results showed that urbanization did not significantly affect soil fungal diversity but caused marked shifts in community composition, characterized by declines in plant-beneficial fungi (ectomycorrhizal, arbuscular mycorrhizal, and saprotrophic fungi) and increases in fungal plant pathogens. Urbanization also altered fungal community assembly by strengthening homogeneous selection and homogenizing dispersal while weakening dispersal limitation. Furthermore, fungal correlation networks became less complex and less stable with increasing urbanization. Collectively, these results suggest that urbanization can disrupt critical plant-fungi interactions and reduce the stability and resilience of soil fungal communities in urban ecosystems.