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Scientia Silvae Sinicae ›› 2022, Vol. 58 ›› Issue (2): 70-79.doi: 10.11707/j.1001-7488.20220208

• Research papers • Previous Articles     Next Articles

Diversity and Community Assembly of Forest Soil Microorganisms in Different Climatic Zones

Wei Cong1,Jingjing Yu1,Haimang Yu2,Yi Ding1,Yuguang Zhang1,*   

  1. 1. Ecology and Conservation Institute, CAF Key Laboratory of Biodiversity Conservation of National Forestry and Grassland Administration Beijing 100091
    2. Changsha Professional Technical College of Hunan Changsha 410142
  • Received:2020-08-17 Online:2022-02-25 Published:2022-04-26
  • Contact: Yuguang Zhang


Objective: This study aimed to investigate the diversity characteristics and distribution patterns of forest soil microorganisms to provide a basis for the understanding soil microbial diversity and its response to environmental changes, as well as forest ecosystem management. Method: This study was conducted in different climate zones, including temperate coniferous forest (Kanas, Xinjiang, KNS; Ku'erdening, Xinjiang, KEDN), warm temperate coniferous and broad-leaved mixed forest (Xiaolong Mountain, Gansu), subtropical evergreen deciduous broad-leaved mixed forest (Mulinzi, Hubei), and tropical rain forest (Bawangling, Hainan). Soil samples were collected from the established six hm2 permanent plots, and the distribution patterns of bacterial and fungal diversity were analyzed by using Illumina sequencing technology. Result: The results showed that the diversity of soil bacteria was the highest in the warm temperate coniferous and broad-leaved mixed forest. It exhibited a single peak distribution in the five sample plots along the climate gradient. The Shannon index of soil fungi was the highest in temperate coniferous forest, and the richness of soil fungi was the highest in tropical rain forest. The null model revealed that the soil bacterial community was mainly dominated by deterministic processes, while the fungal community was mainly dominated by stochastic processes. Canonical correlation analysis (CCA) and Mantel test indicated that soil pH (r=0.826, P < 0.001) and plant diversity (r=0.474, P < 0.001) were significantly correlated with soil bacterial and soil fungal community structure. Conclusion: There are significant differences in the diversity and community structure of forest soil bacteria and fungi in different climatic zones. Soil bacteria and fungi have different community assembly characteristics. Soil pH and plant diversity are important factors affecting forest soil microbial diversity in different climate zones.

Key words: climatic zone, forest soil bacteria, forest soil fungi, community structure, community assembly

CLC Number: