Global food transportation emission factors 2018, by transport mode

Transporting food by air emits 1.13 kilograms of carbon dioxide equivalent per metric ton-kilometer (kg CO2eq per metric ton-kilometer). This is considerably higher than the emission factor of transporting foods by sea, which is between 0.01 to 0.02 kg CO2eq per metric ton-kilometer.

航空运输食品每吨公里排放的二氧化碳当量为1.13千克（kg CO2eq per metric ton-kilometer），这一数值显著高于通过海洋运输食品的排放系数，后者介于每吨公里0.01至0.02千克二氧化碳当量（kg CO2eq per metric ton-kilometer）之间。