Summary
This meta-analysis pooled field measurements of direct nitrous oxide emissions from Mediterranean climate cropping systems to establish robust, region-specific N₂O emission factors for greenhouse gas inventory and modelling applications. The large international author team synthesised data across multiple sites and management practices, deriving factors that reflect the particular soil and climatic conditions of Mediterranean agriculture rather than relying on global default values. The work addresses a recognised gap in regional emission factor specificity for this agro-climatic zone.
UK applicability
Mediterranean-derived emission factors have limited direct applicability to UK temperate cropping systems, which differ substantially in soil moisture, temperature regimes, and nitrogen cycling dynamics. However, the meta-analytical methodology and approach to regional factor derivation may inform development of UK-specific or temperate-zone emission factors for national greenhouse gas inventories.
Key measures
Direct N₂O emission factors (likely expressed as kg N₂O-N ha⁻¹ or percentage of applied nitrogen); emission factors stratified by management practice and Mediterranean climatic conditions
Outcomes reported
The study synthesised field measurements of direct nitrous oxide emissions from Mediterranean climate cropping systems to derive region-specific N₂O emission factors. These factors account for soil and climatic conditions particular to Mediterranean agriculture and are intended for use in greenhouse gas inventory and modelling work.
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