Greenhouse gas emissions from global production and use of nitrogen synthetic fertilisers in agriculture.

ABSTRACT: The global agri-food system relies on synthetic nitrogen (N) fertilisation to increase crop yields, yet the use of synthetic N fertiliser is unsustainable. In this study we estimate global greenhouse (GHG) emissions due to synthetic N fertiliser manufacture, transportation, and field use in agricultural systems. By developing the largest field-level dataset available on N₂O soil emissions we estimate national, regional and global N₂O direct emission factors (EFs), while we retrieve from the literature the EFs for indirect N₂O soil emissions, and for N fertiliser manufacturing and transportation. We find that the synthetic N fertiliser supply chain was responsible for estimated emissions of 1.13 GtCO₂e in 2018, representing 10.6% of agricultural e

SUBMITTER: Menegat S 

PROVIDER: S-EPMC9411506 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature