This research aimed to evaluate the levels and stocks of carbon in the soil, as well as its physical fractions (COp and COam) in areas under different land uses in the Savannah in Bahia. The environments selected for the evaluations consisted of: area under native savannah vegetation strict sensu (ACN); area under conventional banana plantation (APB); area with agroforestry system with cocoa, mango and banana plantations (SAFs); and area under 7-year-old eucalyptus plantation (EUC). Soil samples were collected in layers of 0-10, 10-20, 20-30, 30-40 and 40-50 cm for the determination of total organic carbon (TOC) and particulate organic carbon (COp), mineral-associated organic carbon (COam) and BMI. The EUC treatment proved to be the most efficient use of soil in accumulating carbon in all the evaluated soil layers, as it presented the lowest losses in the carbon tors and higher stocks of this, in relation to the other treatments. The AEU and SAFs proved to be efficient in accumulating organic matter at a depth of up to 30 cm, as they presented BMI values higher than the equilibrium area (ACN).
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