Summary
This empirical study separated nitrous oxide emissions from cattle urine and dung to develop evidence-based, UK-specific emission factors for grazing livestock excreta—a major source in national agricultural inventories. The findings suggest the UK emission factor differs from the IPCC default, with implications for national greenhouse gas accounts and carbon footprinting of ruminant livestock products.
UK applicability
The study was conducted in the United Kingdom and explicitly developed UK-specific emission factors to replace or refine IPCC default values in the national inventory. The results directly inform UK climate accounting for ruminant agriculture and carbon footprinting of domestic livestock production.
Key measures
N₂O emission factors (EF₃, pasture, range and paddock) for excretal nitrogen from cattle urine and dung; effects of site and timing of application on emissions
Outcomes reported
The study quantified nitrous oxide emissions separately from cattle urine and dung deposited during grazing, and generated country-specific emission factors for the United Kingdom to inform national agricultural greenhouse gas inventories.
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