Table 1.5.1 Summary of key categories in the 2004 inventory (including and excluding LULUCF activities)

Quantitative method used: Tier 1
IPCC Source Categories	Gas	Criteria for identification
Energy sector
CO₂ emissions from stationary combustion - solid	CO₂	level, trend
CO₂emissions from stationary combustion - liquid	CO₂	level, trend
CO₂ emissions from stationary combustion - gas	CO₂	level, trend
Mobile combustion - road vehicles	CO₂	level, trend
Mobile combustion - aviation	CO₂	level, trend
Fugitive emissions from oil and gas operations	CO₂	level, trend
Fugitive emissions from geothermal operations	CO₂	trend
Industrial processes sector
Emissions from the iron and steel industry	CO₂	level
Emissions from aluminium production	CO₂	level
PFC's from aluminium production	PFC	trend
Emissions from substitutes for ozone depleting substances	HFCs	level, trend
Agricultural sector
Emissions from enteric fermentation in domestic livestock	CH₄	level, trend
Emissions from manure management	CH₄	level
Direct emissions from agricultural soils	N₂O	level, trend
Emissions from animal deposition on agricultural soils	N₂O	level, trend
Indirect emissions from nitrogen used in agriculture	N₂O	level
LULUCF sector
Forest land remaining forest land	CO₂	level, trend
Cropland remaining cropland	CO₂	level
Conversion to forest land	CO₂	level, trend
Conversion to grassland	CO₂	level
Waste sector
Emissions from solid waste disposal sites	CH₄	level, trend