Articles | Volume 19, issue 24
https://doi.org/10.5194/bg-19-5707-2022
https://doi.org/10.5194/bg-19-5707-2022
Research article
 | 
15 Dec 2022
Research article |  | 15 Dec 2022

Cutting peatland CO2 emissions with water management practices

Jim Boonman, Mariet M. Hefting, Corine J. A. van Huissteden, Merit van den Berg, Jacobus (Ko) van Huissteden, Gilles Erkens, Roel Melman, and Ype van der Velde

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Cited articles

Allen, R. G., Pereira, L. S., Raes, D., and Smith, M.: Crop evapotraspiration guidelines for computing crop water requirements, Food and Agriculture Organisation of the United Nations (FAO) Report, 1998. 
Arets, E. J. M. M., van der Kolk, J. W. H., Hengeveld, G. M., Lesschen, J. P., Kramer, H., Kuikman, P. J., and Schelhaas, M. J.: Greenhouse gas reporting for the LULUCF sector in the Netherlands: methodological background (update 2020), Wageningen environ. res. Report 168, https://doi.org/10.18174/539898, 2020. 
Bååth, E.: Temperature sensitivity of soil microbial activity modeled by the square root equation as a unifying model to differentiate between direct temperature effects and microbial community adaptation, Global Change Biol., 24, 2850–2861, https://doi.org/10.1111/gcb.14285, 2018. 
Bader, C., Müller, M., Schulin, R., and Leifeld, J.: Peat decomposability in managed organic soils in relation to land use, organic matter composition and temperature, Biogeosciences, 15, 703–719, https://doi.org/10.5194/bg-15-703-2018, 2018. 
Bechtold, M., Tiemeyer, B., Laggner, A., Leppelt, T., Frahm, E., and Belting, S.: Large-scale regionalization of water table depth in peatlands optimized for greenhouse gas emission upscaling, Hydrol. Earth Syst. Sci., 18, 3319–3339, https://doi.org/10.5194/hess-18-3319-2014, 2014. 
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Short summary
Draining peat causes high CO2 emissions, and rewetting could potentially help solve this problem. In the dry year 2020 we measured that subsurface irrigation reduced CO2 emissions by 28 % and 83 % on two research sites. We modelled a peat parcel and found that the reduction depends on seepage and weather conditions and increases when using pressurized irrigation or maintaining high ditchwater levels. We found that soil temperature and moisture are suitable as indicators of peat CO2 emissions.
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