Assessing the impacts of agricultural managements on  soil carbon stocks, nitrogen loss, and crop production –  a modelling study in eastern Africa

Ma, Jianyong; Rabin, Sam S.; Anthoni, Peter; Bayer, Anita D.; Nyawira, Sylvia S.; Olin, Stefan; Xia, Longlong; Arneth, Almut

doi:https://doi.org/10.5194/bg-19-2145-2022

Articles | Volume 19, issue 8

https://doi.org/10.5194/bg-19-2145-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-19-2145-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 8

Research article

|

22 Apr 2022

Research article |

| 22 Apr 2022

Assessing the impacts of agricultural managements on soil carbon stocks, nitrogen loss, and crop production – a modelling study in eastern Africa

Jianyong Ma, Sam S. Rabin, Peter Anthoni, Anita D. Bayer, Sylvia S. Nyawira, Stefan Olin, Longlong Xia, and Almut Arneth

Supplement

https://doi.org/10.5194/bg-19-2145-2022-supplement

Data sets

Production/Crops and livestock products FAOSTAT https://www.fao.org/faostat/en/#data

WFDE5 over land merged with ERA5 over the ocean, Version 2.0 S. Lange, ,C. Menz, S. Gleixner, M. Cucchi, G. P. Weedon, A. Amici, N. Bellouin, H. Müller Schmied, H. Hersbach, C. Buontempo, and C. Cagnazzo https://doi.org/10.48364/ISIMIP.342217

Version 4 of the CRU TS monthly high-resolution gridded multivariate climate dataset (https://data.ceda.ac.uk/badc/cru/data/cru_jra/cru_jra_2.1) I. Harris, T. J. Osborn, P. Jones, and D. Lister https://doi.org/10.1038/s41597-020-0453-3

The JRA-55 reanalysis: General specifications and basic characteristics (https://data.ceda.ac.uk/badc/cru/data/cru_jra/cru_jra_2.1) S. Kobayashi, Y. Ota, Y. Harada, A. Ebita, M. Moriya, H. Onoda, K. Onogi, H. Kamahori, C. Kobayashi, H. Endo, K. Miyaoka, and T. Kiyotoshi https://doi.org/10.2151/jmsj.2015-001

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Short summary

Improved agricultural management plays a vital role in protecting soils from degradation in eastern Africa. We simulated the impacts of seven management practices on soil carbon pools, nitrogen loss, and crop yield under different climate scenarios in this region. This study highlights the possibilities of conservation agriculture when targeting long-term environmental sustainability and food security in crop ecosystems, particularly for those with poor soil conditions in tropical climates.