Articles | Volume 22, issue 15
https://doi.org/10.5194/bg-22-4013-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-4013-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Aug 2025
Research article |
| 14 Aug 2025
| 14 Aug 2025
Fertilization turns a rubber plantation from sink to methane source
Daniel Epron
CORRESPONDING AUTHOR
Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
Rawiwan Chotiphan
Sithiporn Kridakara Research Station, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Prachuap Khiri Khan 77170, Thailand
Zixiao Wang
Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
Ornuma Duangngam
DORAS Centre, Kasetsart University, Bangkok 10900, Thailand
Makoto Shibata
Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
Sumonta Kumar Paul
Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
Takumi Mochidome
Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
Jate Sathornkich
Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
Wakana A. Azuma
Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
Jun Murase
Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
Yann Nouvellon
DORAS Centre, Kasetsart University, Bangkok 10900, Thailand
UMR Eco&Sols, CIRAD, 2 Place Viala, 34060 Montpellier CEDEX 2, France
Poonpipope Kasemsap
Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
DORAS Centre, Kasetsart University, Bangkok 10900, Thailand
Kannika Sajjaphan
CORRESPONDING AUTHOR
Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
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This preprint is open for discussion and under review for Biogeosciences (BG).
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This study used a machine learning approach to scale soil CH4 fluxes over time in a topographically complex mountain forest. Within the landscape, predicted upland CH4 fluxes varied significantly across topographic positions, with the greater uptake on ridges and slopes than in the plain and foot slopes. Recent past precipitations significantly influenced seasonal CH4 uptake. Our findings highlight the role of topography and the potential of remote sensing and machine learning to map CH4 fluxes.
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Tropical forest soils are vital for methane uptake, but deforestation and agriculture can alter soil methane oxidation. An experiment in Thailand shows that fertilization significantly suppresses methane oxidation in rubber plantation soils, affecting depths up to 60 cm. Without fertilization, deeper soil layers (below 10 cm) actively oxidize methane. These findings suggest that fertilization negatively impacts the methane uptake capacity of deep-layer soils in rubber plantations.
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This study used a machine learning approach to scale soil CH4 fluxes over time in a topographically complex mountain forest. Within the landscape, predicted upland CH4 fluxes varied significantly across topographic positions, with the greater uptake on ridges and slopes than in the plain and foot slopes. Recent past precipitations significantly influenced seasonal CH4 uptake. Our findings highlight the role of topography and the potential of remote sensing and machine learning to map CH4 fluxes.
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Tropical forest soils are vital for methane uptake, but deforestation and agriculture can alter soil methane oxidation. An experiment in Thailand shows that fertilization significantly suppresses methane oxidation in rubber plantation soils, affecting depths up to 60 cm. Without fertilization, deeper soil layers (below 10 cm) actively oxidize methane. These findings suggest that fertilization negatively impacts the methane uptake capacity of deep-layer soils in rubber plantations.
Ivan Cornut, Nicolas Delpierre, Jean-Paul Laclau, Joannès Guillemot, Yann Nouvellon, Otavio Campoe, Jose Luiz Stape, Vitoria Fernanda Santos, and Guerric le Maire
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Potassium is an essential element for living organisms. Trees are dependent upon this element for certain functions that allow them to build their trunks using carbon dioxide. Using data from experiments in eucalypt plantations in Brazil and a simplified computer model of the plantations, we were able to investigate the effect that a lack of potassium can have on the production of wood. Understanding nutrient cycles is useful to understand the response of forests to environmental change.
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Anna B. Harper, Karina E. Williams, Patrick C. McGuire, Maria Carolina Duran Rojas, Debbie Hemming, Anne Verhoef, Chris Huntingford, Lucy Rowland, Toby Marthews, Cleiton Breder Eller, Camilla Mathison, Rodolfo L. B. Nobrega, Nicola Gedney, Pier Luigi Vidale, Fred Otu-Larbi, Divya Pandey, Sebastien Garrigues, Azin Wright, Darren Slevin, Martin G. De Kauwe, Eleanor Blyth, Jonas Ardö, Andrew Black, Damien Bonal, Nina Buchmann, Benoit Burban, Kathrin Fuchs, Agnès de Grandcourt, Ivan Mammarella, Lutz Merbold, Leonardo Montagnani, Yann Nouvellon, Natalia Restrepo-Coupe, and Georg Wohlfahrt
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We evaluated 10 representations of soil moisture stress in the JULES land surface model against site observations of GPP and latent heat flux. Increasing the soil depth and plant access to deep soil moisture improved many aspects of the simulations, and we recommend these settings in future work using JULES. In addition, using soil matric potential presents the opportunity to include parameters specific to plant functional type to further improve modeled fluxes.
Anteneh Getachew Mengistu, Gizaw Mengistu Tsidu, Gerbrand Koren, Maurits L. Kooreman, K. Folkert Boersma, Torbern Tagesson, Jonas Ardö, Yann Nouvellon, and Wouter Peters
Biogeosciences, 18, 2843–2857, https://doi.org/10.5194/bg-18-2843-2021, https://doi.org/10.5194/bg-18-2843-2021, 2021
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In this study, we assess the usefulness of Sun-Induced Fluorescence of Terrestrial Ecosystems Retrieval (SIFTER) data from the GOME-2A instrument and near-infrared reflectance of vegetation (NIRv) from MODIS to capture the seasonality and magnitudes of gross primary production (GPP) derived from six eddy-covariance flux towers in Africa in the overlap years between 2007–2014. We also test the robustness of sun-induced fluoresence and NIRv to compare the seasonality of GPP for the major biomes.
Rosa M. Poch, Lucia H. C. dos Anjos, Rafla Attia, Megan Balks, Adalberto Benavides-Mendoza, Martha M. Bolaños-Benavides, Costanza Calzolari, Lydia M. Chabala, Peter C. de Ruiter, Samuel Francke-Campaña, Fernando García Préchac, Ellen R. Graber, Siosiua Halavatau, Kutaiba M. Hassan, Edmond Hien, Ke Jin, Mohammad Khan, Maria Konyushkova, David A. Lobb, Matshwene E. Moshia, Jun Murase, Generose Nziguheba, Ashok K. Patra, Gary Pierzynski, Natalia Rodríguez Eugenio, and Ronald Vargas Rojas
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Humanity depends on the existence of healthy soils, both for the production of food and for ensuring a healthy, biodiverse environment. In the face of global crises like the COVID-19 pandemic, a sustainable soil management strategy is essential to ensure food security based on more diverse, locally oriented, and resilient food production systems through improving access to land, sound land use planning, sustainable soil management, enhanced research, and investment in education and extension.
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Short summary
The rapid expansion of rubber cultivation constitutes a significant land-use change in Southeast Asia. Despite fertilization being a common practice in rubber plantations, its impact on soil methane (CH4) dynamics has remained poorly understood. Our study demonstrates that fertilization not only reduces soil CH4 consumption but also increases CH4 production, transforming rubber plantations from a net CH4 sink to a source. Implementing rational fertilization could enhance atmospheric CH4 removal.
The rapid expansion of rubber cultivation constitutes a significant land-use change in Southeast...
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