부산대학교 도서관

Fossil-fuel based energy use in agriculture leads to CO2 and non-CO2 emissions. We focus on emissions generated within the farm gate and from fisheries, providing information relative to the period 1970-2019 for both energy use as input activity data and the associated greenhouse gas (GHG) emissions. Country-level information is generated from UNSD and IEA data on energy in agriculture, forestry and fishing, relative to use of: gas/diesel oil, motor gasoline, liquefied petroleum gas (LPG), natural gas, fuel oil and coal. Electricity used within the farm gate is also quantified, while recognizing that the associated emissions are generated elsewhere. We find that in 2019, annual emissions from energy use in agriculture were about 523 million tonnes (Mt CO2eq yr-1), while including electricity they were 1,029 Mt CO2eq yr-1, having increased 7% from 1990. The largest emission increases from on-farm fuel combustion were from LPG (32%), whereas significant decreases were observed for coal (-55%), natural gas (-50%), motor gasoline (-42%) and fuel oil (-37%). Conversely, use of electricity and the associated indirect emissions increased threefold over the 1990-2019 period, thus becoming the largest emission source from energy use in agriculture since 2005. Overall the global trends were a result of counterbalancing effects: marked decreases in developed countries in 2019 compared to 1990 (-273 Mt CO2eq yr-1) were masked by slightly larger increases in developing and emerging economies (+ 339 Mt CO2 eq yr-1). The information used in this work is available as open data at: https://zenodo.org/record/5153241 (Tubiello and Pan, 2021). The relevant FAOSTAT (http://www.fao.org/faostat/en/#data/GN ) emissions database is maintained and updated annually by FAO. [ABSTRACT FROM AUTHOR]