Potential and Challenges for Carbon Sequestration in Agricultural Soils

Agriculture occupies a larger portion of global land res publica (about 35%) than any other human activity (Betts and Falloon, 2007). Agriculture body politic stocks have been suggested as potential measure to sequester atmospheric carbon dioxide to help stabilize its concentration in atmosphere and has been estimated that 0.4-0.9 Pg C year-1 throne be sequestrated within global agricultural soils (Paustian et al., 1998). This has been supported by the 4th assessment made by the Intergovernmental Panel on Climate Change, that set agriculture as among the economic sectors having the greatest near-term (by 2030) greenhouse gas extenuation potential, largely via soil organic carbon (SOC) sequestration (Smith et al.,2007). However, currently, there is very much disbelief and debate due to uncertainties associated with quantifying the impact of the various crop worry practices on green house gas emission ,the spatial and profane scales involved in quantifying greenhouse gas em issions from, and C sequestration in, agro-ecosystems, uncertainty of future climatic conditions that affect type of crop mana...