Table 27.2 - Relative direct sources of global greenhouse gases (percentages of total anthropogenic emissions in 1990)

Source: IPCC, 1992

Sources CO2 CH4 N2O CFCs
Energy 80 26 9 ­
Deforestation/land clearing 18 ­ 17 ­
Other industry 3 ­ 15 100
Fertilised soils­ ­ 48 ­
Enteric fermentation ­ 24 ­ ­
Rice cultivation­ 17 ­ ­
Landfills­ 11 ­ ­
Biomass burning­ 8 11 ­
Animal waste­ 7 ­ ­
Domestic sewage­ 7 ­ ­