2.2.2 source of carbon sequestration in soil (soil carbon pool) is the largest and most important carbon source. The amount of carbon stored in soils throughout the world, with about 2,500 Pg in the form of organic carbon, about 1,550 Pg and in the form of carbon, inorganic (soil inorganic carbon: SIC), about 950 Pg, which amount to 4. times the amount of carbon in biomass (560 Pg) and the amount is three times the amount of carbon in the atmosphere (760 Pg) (Lal, 2008) for the amount of carbon in the soil in the quantity of organic carbon, about 6 million Gg (1. Gg = 109g) 0.046 percent of organic carbon in the world. And inorganic carbon content of about 184,049 Gg 0.019 percent of inorganic carbon in the world which is in the form of carbonate (Mon Podchanee growth and Thavisakdi Crusade Gallery, 2544).
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