Interregional transfers of food-system greenhouse gas emissions (GHG) along with the trade network among provinces.xlsx

Food systems are responsible for a third of global anthropogenic greenhouse gas (GHG) emissions and there has been an increasing research focus on food-system GHGs. However, limited attention has been paid to emissions from the supply chains and the regional trade network associated with food systems. This study developed a multi-regional input-output-based hybrid life cycle assessment model and traced China’s food-system GHG emissions (CO2, CH4, N2O, fluorinated gases (F-gases)) from production to consumption, including processing, transport and packaging. China’s food system emitted 2349.2 Mt2.4 (95 %; CI range: 1.6–3.2) Gt CO2-equivalent (CO2e) GHGs in 2019, with the four main GHGs contributing 4947.36% (CO2), 3534.41% (CH4), 1014.91% (N2O), and 4.32% (F-gases).