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Effects of close-to-nature management of plantation on the structure and ecological functions of soil microorganisms with different habitat specialization

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Abstract

Aims

We investigated the changes in structure and driving factors of soil microbial communities with different habitat specialization and their effects on soil nitrogen mineralization during close-to-nature of plantation.

Methods

Close-to-nature forests were classified into Pinus tabulaeformis forest stage, mixed forest stage and near natural forest stage based on the coverage ratio of P. tabulaeformis to tree layer, and natural secondary forests selected for control. Soil physicochemical properties, enzyme activities, and nitrogen mineralization processes were determined. Soil microbial community structures were analyzed using high-throughput sequencing. Soil microorganisms were classified into habitat-generalized, neutral and specialized groups according to the relationship between the actual niche width and the confidence interval of simulated zero distribution.

Results

(1) The extreme value of soil properties mainly appeared in the mixed forest stage. (2) The frequency of fungi and bacteria of each group both increased during near-naturalization with the generalized group increased fastest. (3) The bacterial β-diversity of each group differed significantly while the fungi not. (4) The soil bacterial structure of each group was affected by distance and soil properties. The influence of the former increased while the latter decreased with habitat specialization. (5) The structure of dominant genera of each group in the natural secondary forests significantly differed from close-to-nature forests and their structure well explained the soil nitrogen mineralization processes.

Conclusion

Close-to-nature has improved soil properties, microbial community structure and nitrogen mineralization rate. Each habitat specialization group of microbial responded differently to near-naturalization and their structure well explained soil nitrogen mineralization processes.

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Acknowledgements

We would like to express our sincere gratitude for the help from the staff of The Baxianshan Nature Reserve during the field survey and sampling.

Funding

The authors declare no sources of funding, grants, or other support were received during the preparation of this manuscript.

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Authors and Affiliations

Authors

Contributions

All authors contributed to the study conception and design. Field survey, material collection, indoor experiments were performed by [Zhenlu Qiu], [Mei Zhang] and [Kefan Wang]. Data collection and analysis were performed by [Zhenlu Qiu] and [Cong Shi] The first draft of the manuscript was written by [Zhenlu Qiu] and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.”

Corresponding author

Correspondence to Fuchen Shi.

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Competing interests

The authors have no relevant financial or non-financial interests to disclose.

SRA

https://www.ncbi.nlm.nih.gov/bioproject/PRJNA852687

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Responsible Editor: Stavros D. Veresoglou.

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Qiu, Z., Shi, C., Zhang, M. et al. Effects of close-to-nature management of plantation on the structure and ecological functions of soil microorganisms with different habitat specialization. Plant Soil 482, 347–367 (2023). https://doi.org/10.1007/s11104-022-05694-w

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  • DOI: https://doi.org/10.1007/s11104-022-05694-w

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