A large source of carbon is ranked third. Source of carbon in the soil Contain fossil degradation in different periods. The synthesis of compounds from microorganisms and microbial biomass and dead animals. Carbon accumulated about 2,500 Pg 0-100 cm depth consists of a collection of organic carbon (Soil organic pool) are approximately 1,550 Pg of carbon and inorganic carbon source (Soil inorganic pool) consists of minerals. Carbon is an element and include calcite, dolomite, limestone and gypsum, which is a source of carbon found in arid areas. Carbon approximately 950 Pg (Betjes, 1996).
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