Factors That Influence Nitrous Oxide Emissions from Agricultural Soils as Well as Their Representation in Simulation Models: A Review

Nitrous oxide (N2O) is a long-lived greenhouse gas that contributes to global warming. Emissions of N2O mainly stem from agricultural soils. This review highlights the principal factors from peer-reviewed literature affecting N2O emissions from agricultural soils, by grouping the factors into three...

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Bibliographic Details
Published inAgronomy (Basel) Vol. 11; no. 4; p. 770
Main Authors Wang, Cong, Amon, Barbara, Schulz, Karsten, Mehdi, Bano
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.04.2021
Subjects
Agricultural land
Agriculture
agronomy
Climate change
Cropping systems
Denitrification
emission factors
Emissions
Environmental management
Fertilizers
Global warming
Greenhouse effect
Greenhouse gases
Hydrologic models
Impact factors
Laboratories
N2O impact factor
N2O modelling
nitrification
Nitrogen
Nitrous oxide
Representations
Reviews
Simulation
Soil and Water Assessment Tool model
Soil management
Soil water
Soils
Europe
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Summary:Nitrous oxide (N2O) is a long-lived greenhouse gas that contributes to global warming. Emissions of N2O mainly stem from agricultural soils. This review highlights the principal factors from peer-reviewed literature affecting N2O emissions from agricultural soils, by grouping the factors into three categories: environmental, management and measurement. Within these categories, each impact factor is explained in detail and its influence on N2O emissions from the soil is summarized. It is also shown how each impact factor influences other impact factors. Process-based simulation models used for estimating N2O emissions are reviewed regarding their ability to consider the impact factors in simulating N2O. The model strengths and weaknesses in simulating N2O emissions from managed soils are summarized. Finally, three selected process-based simulation models (Daily Century (DAYCENT), DeNitrification-DeComposition (DNDC), and Soil and Water Assessment Tool (SWAT)) are discussed that are widely used to simulate N2O emissions from cropping systems. Their ability to simulate N2O emissions is evaluated by describing the model components that are relevant to N2O processes and their representation in the model.
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ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy11040770