To account for soil carbon change, due to changes in management
practices, the Vergé et al. [14] estimates were revised and the new carbon footprints are presented in
Table 2b, which was obtained by prorating the estimated annual change in soil carbon (11 Tg CO2
sequestered nationally in 2006) by the ratio of the area in the beef crop complex (the land area dedicated
to producing feed and fodder crops for beef cattle) to the total agricultural land area during the year of
interest. The change in soil carbon was taken from Canada’s National Inventory of Greenhouse Gas
Emissions [37] for cropland remaining cropland.