Option

Garnaut (2008)

(Mt CO₂-e / year)

CSIRO (2009)

(Mt CO₂-e / year)

National potential

National potential

Agriculture

Rehabilitate overgrazed rangelands, restoring soil and vegetation carbon-balance

286

100

Rehabilitate mulga lands, restoring soil and vegetation carbon balance (subset of rangelands)

250

20

Mitigation of emissions from savanna burning (Kyoto-compliant gases)

5

13

Build soil carbon storage and mitigate nitrous oxide emissions from cropped land (land use change not considered)

68

25

Reduce livestock enteric emissions and structural change in industry

16

26

Greenhouse gas sequestration / mitigation for agriculture (accounting for overlap of options)

164

Forestry

Change land use to carbon forestry (primary goal is carbon sequestration)

143

750

Biodiversity – implement biodiversity plantings as carbon sink (primary goal is promotion of native biodiversity; subset of carbon forestry)

Not estimated

350

Carbon storage post-1990 (primary goal is commercial biomass harvest; competes for resources with carbon forestry)

50

400

Increase carbon banks pre-1990 eucalypt forests

136

47

Carbon positive management of regrowth vegetation and remnant forest (reduce land clearing)

63

56

Greenhouse gas sequestration from forestry (accounting for overlap of options)

853

Bioenergy

Substitution of fossil fuels with biofuel / bioelectricity from first generation biomass resources

44

(mix of 1^st and 2^nd generation resources)

Not estimated

Substitution of fossil fuels with biofuel / bioelectricity from second generation biomass resources

Not estimated

Stabilise organic carbon in biochar and store in soil (sugar cane biomass only; competes for resources with second generation biomass)

Not estimated

9

Greenhouse gas sequestration / mitigation for bioenergy (accounting for overlap options)

Not estimated