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Above- and belowground composition and diversity of subtropical plantations and their relationships with soil nutrient stocks

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Abstract

Purpose

This study aimed to understand the above- and belowground community assembly in subtropical plantations, and to detect the relationship with understory plant communities, soil microbial communities and stocks of soil organic carbon, nitrogen and phosphorus.

Methods

We compared the composition and diversity of understory plants and microbial communities among exotic monocultures versus native conifer and broadleaved mixtures, and tested the co-structure between understory plant communities, soil microbial communities and soil characteristics.

Results

The two native mixtures compared to exotic monocultures had greater understory plant cover (except for the herbaceous cover that was lower) and diversity, but lower community weighted mean of shrub and herbaceous leaf carbon content. Exotic monocultures and native broadleaved mixtures had a higher biomass of each microbial group than native conifer mixtures based on phospholipid fatty acids (PLFAs) extractions. Based on high throughput sequencing, we found higher bacterial and fungal richness in native mixtures than in exotic monocultures, but lower bacterial Shannon diversity. In terms of soil nutrients, only the soil phosphorus stocks were significantly higher in native mixtures than in exotic monocultures. Moreover, in the two native mixtures there was a strong co-structure between understory plants, soil microbes and soil nutrients. Yet, fungal phyla did not have any co-structure with other taxa.

Conclusion

Our study highlights the important yet inconsistent roles of different plantation types in affecting the patterns of above- and belowground diversity, soil nutrients, and the maintenance of their relationships. Long-term monitoring is suggested to determine whether the main findings change with plantation restoration over time.

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Data availability

Data will be available upon reasonable request.

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Acknowledgements

This research was supported by the National Key Research and Development Program of China (No. 2021YFC3100405), the National Natural Science Foundation of China (NSFC, No. 32271738; No.31800455), and the international mobility project of National Natural Science Foundation of China - Research Foundation Flanders (NSFC-FWO, No.32211530482). We are grateful to Vicki Moore for verifying the English language in the manuscript.

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Authors and Affiliations

Authors

Contributions

Liping Wei: Conceptualization, Formal analysis, Funding acquisition, Data collection and analysis,, Writing - original draft. Yves Bergeron: Writing - review & editing. Pieter De Frenne: Conceptualization, Methodology, Writing - review & editing. Kris Verheyen: Conceptualization, Methodology, Writing - review & editing. Lingmin Tian: Methodology, Data collection and analysis, Writing - review & editing. Hai Ren: Writing - review & editing. Shuguang Jian:Writing - review & editing.

Corresponding authors

Correspondence to Lingmin Tian or Shuguang Jian.

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Competing interests

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Responsible Editor: Isabel Mujica.

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Wei, L., Bergeron, Y., De Frenne, P. et al. Above- and belowground composition and diversity of subtropical plantations and their relationships with soil nutrient stocks. Plant Soil 495, 235–252 (2024). https://doi.org/10.1007/s11104-023-06317-8

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  • DOI: https://doi.org/10.1007/s11104-023-06317-8

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