2] emissions from on-farm fossil fuel and mobile combustion averaged about 14 MMTCE per year (14) (Table 1).
agricultural lands will nearly double from current levels by 2012, adding roughly an additional 11 MMTCE of sequestered carbon attributable to the sector.
Other longer term estimates from USDA report the potential for net increases in carbon sequestration ranging from 10 to 160 MMTCE per year in the United States, or roughly 2-14 times current levels.
Under USDA's forecast, an additional carbon uptake of 160 MMTCE per year would more than offset the agriculture sectors' annual GHG emissions, or offset 8% of total national emissions from all sources.
USDA's forecast of an additional sequestration potential of 10-160 MMTCE is associated with an estimated annual value ranging from $10/mt to $125/mt of carbon permanently sequestered.