Earth’s Future Atmosphere (page 66)

The Worldwatch Report Mitigating Climate Change Through Food and Land Use looks at the potential for reduced GHGs and carbon sequestration from land-use, involving farming, forestry and habitat protection. The IPCC’s estimates for changed farming methods suggest that between 1.5 and 4.3 Gt a year of CO₂ could be sequestered each year by 2030, and that a changed approach to forestry could sequester 5.8 to 13.8 Gt. Together, these amount to 7.3 to 18.1 Gt, representing 20% to 50% of the total 2008 CO₂ emissions of 36.6 Gt.

Source: Worldwatch Institute, 2009