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[Function and application of soil microorganisms in forest ecosystem].

Soil microorganism is an important part of forest ecosystem, and plays an important role in sustainable development of forestry. In this paper, we summarized the main functions of soil microorganisms in forest sustainable development from the aspects of 1) the role of soil microorganism and microbiomass; 2) the function of mycorrhizal fungi; 3) the impact of pathogen; and 4) the effect of PGPR. Finally, we also discussed the research trends of forest soil microorganism and its application. Some study areas which should be further studied were also proposed.