Francaviglia, Rosa and Farina, Roberta and Corti, Giuseppe and De Sanctis, Giacomo and Roggero, Pier Paolo (2008) Soil carbon stocks, carbon dioxide sequestration and tillage techniques. Italian Journal of Agronomy, Vol. 3 (3 Suppl.), p. 841-842. ISSN 1125-4718. Article.
C sequestration via agricultural soils can be accounted for, under Article 3.4 of the Kyoto Protocol,
provided that specific measures are implemented. Sound cropland management can play a positive role
in mitigating GHGs emissions from other sources, and carbon dioxide in particular, through a decrease
of soil organic carbon (SOC) losses, an increase of organic material inputs or combining these two
options. Literature data estimate about 1,500 Gg SOC to 1 m depth (Eswaran et al., 2000), in
comparison with 4,000 Gg C of fossil fuels, indicating SOC as the largest sink of C after fossil fuels.
Vegetation (600 Gg) and atmosphere (760 Gg) store considerably less C than soils.
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