Three Decades of Soil N 2 O Research—Insights and Gaps
Abstract
Nitrous oxide (N 2 O) is a potent greenhouse gas (GHG) whose atmospheric concentration continues to rise, largely driven by nitrogen (N) inputs to agricultural soils. Over the past three decades, research on soil N 2 O emissions has advanced substantially, yet key uncertainties still constrain mitigation efforts. Here, we synthesize developments in measurement techniques, process understanding, microbial ecology, and modelling from the 1990s to the present, and identify critical gaps for future research. Advances in high‐frequency measurements, laser spectroscopy, and isotopic approaches have revealed the importance of temporal “hot moments” and spatial “hotspots,” challenging earlier assumptions based on sparse sampling. Concurrently, molecular and multi‐omic tools have transformed our understanding of the microbial drivers of N 2 O production and consumption, highlighting the role of community composition, truncated pathways, and previously overlooked N 2 O‐producing and reducing organisms. Process‐based models have evolved from research tools into policy‐relevant frameworks underpinning GHG inventories, with emerging integration of data assimilation, ensemble modelling, and artificial intelligence. However, despite these advances, persistent challenges remain in linking scales, reducing uncertainties, and translating mechanistic insights into scalable mitigation strategies. Closing these gaps offers a unique opportunity to translate decades of scientific progress into next‐generation mitigation strategies that align agricultural productivity with climate stabilization goals.
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BibTeX
@article{butterbachbahl2026three,
title = {{Three Decades of Soil N 2 O Research—Insights and Gaps}},
author = {Klaus Butterbach-Bahl and Laurent Philippot and João Serra and Whendee Silver and Stephen Ogle and Diego Abalos},
journal = {Global Change Biology},
year = {2026},
month = aug,
doi = {10.1111/gcb.71038},
url = {https://hal.inrae.fr/hal-05771477v1},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Three Decades of Soil N 2 O Research—Insights and Gaps
AU - Klaus Butterbach-Bahl
AU - Laurent Philippot
AU - João Serra
AU - Whendee Silver
AU - Stephen Ogle
AU - Diego Abalos
PY - 2026
DA - 2026/08/09
JO - Global Change Biology
DO - 10.1111/gcb.71038
UR - https://hal.inrae.fr/hal-05771477v1
AB - Nitrous oxide (N 2 O) is a potent greenhouse gas (GHG) whose atmospheric concentration continues to rise, largely driven by nitrogen (N) inputs to agricultural soils. Over the past three decades, research on soil N 2 O emissions has advanced substantially, yet key uncertainties still constrain mitigation efforts. Here, we synthesize developments in measurement techniques, process understanding, microbial ecology, and modelling from the 1990s to the present, and identify critical gaps for future research. Advances in high‐frequency measurements, laser spectroscopy, and isotopic approaches have revealed the importance of temporal “hot moments” and spatial “hotspots,” challenging earlier assumptions based on sparse sampling. Concurrently, molecular and multi‐omic tools have transformed our understanding of the microbial drivers of N 2 O production and consumption, highlighting the role of community composition, truncated pathways, and previously overlooked N 2 O‐producing and reducing organisms. Process‐based models have evolved from research tools into policy‐relevant frameworks underpinning GHG inventories, with emerging integration of data assimilation, ensemble modelling, and artificial intelligence. However, despite these advances, persistent challenges remain in linking scales, reducing uncertainties, and translating mechanistic insights into scalable mitigation strategies. Closing these gaps offers a unique opportunity to translate decades of scientific progress into next‐generation mitigation strategies that align agricultural productivity with climate stabilization goals.
SN - 1354-1013
SN - 1365-2486
ER -