Summary
This systematic review synthesises emission factors for ammonia and nitrous oxide from livestock excreta and land-applied manure, identifying key factors that influence these emissions. The authors provide evidence-based EFs intended for use in greenhouse gas and air quality models. The work contributes to improved understanding of the underlying processes driving emissions from manure management systems.
Regional applicability
Findings are applicable to United Kingdom livestock farming and policy contexts, as the authorship includes UK-based researchers and the emission factors would inform UK agricultural greenhouse gas inventories and nitrous oxide mitigation strategies. Transferability to UK conditions depends on the climatic and management contexts represented in the reviewed studies.
Key measures
Emission factors (EFs) for NH₃ and N₂O from excreta deposition and manure application; influencing variables (likely management, climate, soil, and animal factors)
Outcomes reported
The study reviewed and synthesised emission factors (EFs) for ammonia (NH₃) and nitrous oxide (N₂O) released from livestock excreta and land-applied manure, identifying key factors influencing these emissions. The work aimed to provide improved EFs for inclusion in environmental models and policy frameworks.
Topic tags
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