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Biochar built soil carbon over a decade by stabilizing rhizodeposits

Author

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  • Zhe (Han) Weng

    (School of Environmental and Rural Science, University of New England
    Graham Centre for Agricultural Innovation, Charles Sturt University)

  • Lukas Van Zwieten

    (School of Environmental and Rural Science, University of New England
    Wollongbar Primary Industries Institute
    Southern Cross University)

  • Bhupinder Pal Singh

    (School of Environmental and Rural Science, University of New England
    Elizabeth Macarthur Agricultural Institute)

  • Ehsan Tavakkoli

    (Graham Centre for Agricultural Innovation, Charles Sturt University
    Wagga Wagga Agricultural Institute)

  • Stephen Joseph

    (University of Newcastle
    University of New South Wales
    University of Wollongong
    Present address: Institute of Resource, Ecosystem and Environment of Agriculture, and Center of Agricultural and Climate Change, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China.)

  • Lynne M. Macdonald

    (CSIRO Agriculture)

  • Terry J. Rose

    (Southern Cross University)

  • Michael T. Rose

    (Wollongbar Primary Industries Institute)

  • Stephen W. L. Kimber

    (Wollongbar Primary Industries Institute)

  • Stephen Morris

    (Wollongbar Primary Industries Institute)

  • Daniel Cozzolino

    (Central Queensland Innovation and Research Precinct, North Rockhampton, Central Queensland University)

  • Joyce R. Araujo

    (Instituto Nacional de Metrologia, Qualidade e Tecnologia — INMETRO)

  • Braulio S. Archanjo

    (Instituto Nacional de Metrologia, Qualidade e Tecnologia — INMETRO)

  • Annette Cowie

    (School of Environmental and Rural Science, University of New England
    NSW Department of Primary Industries)

Abstract

Biochar can increase the stable C content of soil. However, studies on the longer-term role of plant–soil–biochar interactions and the consequent changes to native soil organic carbon (SOC) are lacking. Periodic 13CO2 pulse labelling of ryegrass was used to monitor belowground C allocation, SOC priming, and stabilization of root-derived C for a 15-month period—commencing 8.2 years after biochar (Eucalyptus saligna, 550 °C) was amended into a subtropical ferralsol. We found that field-aged biochar enhanced the belowground recovery of new root-derived C (13C) by 20%, and facilitated negative rhizosphere priming (it slowed SOC mineralization by 5.5%, that is, 46 g CO2-C m−2 yr−1). Retention of root-derived 13C in the stable organo-mineral fraction (

Suggested Citation

  • Zhe (Han) Weng & Lukas Van Zwieten & Bhupinder Pal Singh & Ehsan Tavakkoli & Stephen Joseph & Lynne M. Macdonald & Terry J. Rose & Michael T. Rose & Stephen W. L. Kimber & Stephen Morris & Daniel Cozz, 2017. "Biochar built soil carbon over a decade by stabilizing rhizodeposits," Nature Climate Change, Nature, vol. 7(5), pages 371-376, May.
    • Handle: RePEc:nat:natcli:v:7:y:2017:i:5:d:10.1038_nclimate3276
    DOI: 10.1038/nclimate3276
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    Citations

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    Cited by:

    1. Netra B Chhetri, 2020. "Leveraging Current Knowledge and Exploring Future Potential of Biochar," International Journal of Environmental Sciences & Natural Resources, Juniper Publishers Inc., vol. 24(1), pages 9-12, March.
    2. Zhe (Han) Weng & Lukas Zwieten & Ehsan Tavakkoli & Michael T. Rose & Bhupinder Pal Singh & Stephen Joseph & Lynne M. Macdonald & Stephen Kimber & Stephen Morris & Terry J. Rose & Braulio S. Archanjo &, 2022. "Microspectroscopic visualization of how biochar lifts the soil organic carbon ceiling," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    3. Xuanyu Tao & Zhifeng Yang & Jiajie Feng & Siyang Jian & Yunfeng Yang & Colin T. Bates & Gangsheng Wang & Xue Guo & Daliang Ning & Megan L. Kempher & Xiao Jun A. Liu & Yang Ouyang & Shun Han & Linwei W, 2024. "Experimental warming accelerates positive soil priming in a temperate grassland ecosystem," Nature Communications, Nature, vol. 15(1), pages 1-18, December.
    4. Alexandre Tisserant & Francesco Cherubini, 2019. "Potentials, Limitations, Co-Benefits, and Trade-Offs of Biochar Applications to Soils for Climate Change Mitigation," Land, MDPI, vol. 8(12), pages 1-34, November.
    5. Qiao Li & Songjian Liu & Shangzhi Gao & Xin Zhou & Riyue Liu & Song Guan & Sen Dou, 2021. "Specified Dosages of Biochar Application Not Impact Native Organic Carbon but Promote a Positive Effect on Native Humic Acid in Humicryepts Soil," Sustainability, MDPI, vol. 13(11), pages 1-17, June.

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