Soil redox potential directly affects the rate of denitrification
Soil redox potential, driven by oxygen availability and moisture status, directly controls the microenvironmental conditions necessary for microbial denitrification and gaseous nitrogen emissions.
The retrieved papers consistently demonstrate that soil redox conditions, oxygen availability, and related gas diffusion parameters directly govern the activity and kinetics of soil denitrification. Multiple studies connect soil redox potential or its proxies (such as oxygen saturation, air-filled porosity, and relative gas diffusivity) directly to denitrification rates and greenhouse gas emissions.
Lena Rohe, Bernd Apelt, Hans-Jörg Vogel, Reinhard Well, Gi-Mick Wu, Steffen Schlüter. Denitrification in soil as a function of oxygen availability at the microscale. 2021. https://doi.org/10.5194/bg-18-1185-2021
Paper 0 establishes that oxygen availability and soil respiration acting as electron acceptors—key components of soil redox dynamics—directly control denitrification and N2O/N2 emissions.
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J. Owens, T. Clough, J. Laubach, J. Hunt, R. Venterea, R. Phillips. Nitrous Oxide Fluxes, Soil Oxygen, and Denitrification Potential of Urine- and Non-Urine-Treated Soil under Different Irrigation Frequencies.. 2016. https://doi.org/10.2134/jeq2015.10.0516
Paper 1 shows that soil oxygen availability and moisture, which dictate redox status, act as primary controllers of denitrification and gas fluxes.
C. M. Cho. Oxygen Consumption and Denitrification Kinetics in Soil. 1982. https://doi.org/10.2136/sssaj1982.03615995004600040018x
Paper 3 demonstrates that oxygen consumption and electron acceptor supply (the foundation of soil redox conditions) directly govern denitrification kinetics and gas production rates.
K. Dorau, D. Uteau, M. Hövels, S. Peth, T. Mansfeldt. Soil aeration and redox potential as function of pore connectivity unravelled by X‐ray microtomography imaging. 2021. https://doi.org/10.1111/ejss.13165
Paper 4 links pore connectivity and air-filled porosity to the shift in soil redox potential (Eh), which governs soil aeration and microenvironmental oxygen control over biogeochemical pathways.
Yinghao Li, Dandan Wu, Zheng Ma, Shujun Wang, Taotao Chen, Daocai Chi, Hongtao Zou. Potassium Fertilization Partially Mitigates Elevated N2O Emissions Under Alternate Wetting and Drying in Paddy Fields. 2026. https://doi.org/10.3390/agronomy16060661
Paper 9 integrates soil redox potential (Eh) and functional gene abundances under different irrigation regimes to explain shifts in denitrification-driven N2O emissions.
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