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Mycorrhizal type regulates trade-offs between plant and soil carbon in forests

Nature Climate Change volume 14, pages 91–97 (2024)Cite this article

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Abstract

Forest ecosystems store ~80% of the carbon in terrestrial ecosystems, but their long-term carbon sequestration depends partly on how plant biomass and soil carbon stocks will respond to global changes. Although the stimulation of plant growth by global change drivers has been widely observed, the response of soil carbon stock to global changes remains uncertain. Here we conducted a meta-analysis on experimental observations of plant and soil carbon-related data worldwide. We found that plant biomass and soil carbon stock increased more under elevated CO2 than under nitrogen deposition and warming. Under nitrogen deposition and warming, soil carbon stock depended on mycorrhizal associations, decreasing in forests dominated by arbuscular mycorrhizal tree species while increasing in forests dominated by ectomycorrhizal tree species. These results suggest a mycorrhizae-mediated trade-off between plant biomass and soil carbon sequestration in forest ecosystems under nitrogen deposition and warming conditions.

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Fig. 1: Global distribution of N deposition, eCO2 and warming experiments included in this meta-analysis.
Fig. 2: Effects of global change drivers on carbon-related variables.
Fig. 3: Effects of global change drivers on carbon-related variables associated with mycorrhizal types.
Fig. 4: Overall effects of global change drivers on plant biomass and soil C stocks.
Fig. 5: Relationships between response ratio of total biomass, RR of soil C stocks to the magnitude of global change drivers.

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Data availability

All relevant data presented in this meta-analysis are available at Figshare (https://doi.org/10.6084/m9.figshare.23984409.v1)55.

Code availability

All code used can be obtained from Figshare (https://doi.org/10.6084/m9.figshare.23937600.v2)55.

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Acknowledgements

This study was financially supported by CAS Project for Young Scientists in Basic Research grant YSBR-037 (K.Y.), the National Natural Science Foundation of China grants 32192435 (J.Z.) and 31922059 (K.Y.), the National Key Research and Development Program of China grants 2020YFA0608103 (J.Z.) and 2022YFF1300500 (K.Y.).

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Author notes

  1. These authors contributed equally: Kai Yang, Qian Zhang.

Authors and Affiliations

  1. Qingyuan Forest CERN, National Observation and Research Station, Liaoning Province, Chinese Academy of Sciences, Shenyang, China

    Kai Yang, Qian Zhang, Jiaojun Zhu, Qiqi Wang & Tian Gao

  2. Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China

    Kai Yang, Qian Zhang, Jiaojun Zhu, Qiqi Wang & Tian Gao

  3. Key Laboratory of Terrestrial Ecosystem Carbon Neutrality, Liaoning Province, Chinese Academy of Sciences, Shenyang, China

    Kai Yang, Jiaojun Zhu & Tian Gao

  4. Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC, USA

    G. Geoff Wang

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Contributions

K.Y. and J.Z. designed the study. Q.Z. collected data. K.Y. and Q.Z. performed the meta-analysis. K.Y. wrote the article, with significant contributions provided by J.Z., G.G.W., Q.Z., Q.W. and T.G. All the authors contributed to the discussions and paper revision.

Corresponding author

Correspondence to Jiaojun Zhu.

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Nature Climate Change thanks Shuijin Hu and Ashley Lang for their contribution to the peer review of this work.

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Supplementary information

Supplementary Information

Supplementary Figs. 1–5, Tables 1–3 and database references.

Supplementary Table 1

The systematic review reports are a checklist of details that include type of review, authors’ contacts, the contents of manuscript and other items.

Supplementary Data 1

The database of carbon-related variables under nitrogen deposition, elevated CO2 and warming effects.

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Yang, K., Zhang, Q., Zhu, J. et al. Mycorrhizal type regulates trade-offs between plant and soil carbon in forests. Nat. Clim. Chang. 14, 91–97 (2024). https://doi.org/10.1038/s41558-023-01864-5

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