Aggregation Stability and Carbon Pools in Extremely Kaolinitic Soils from the East Coast of Brazil as Affected by Land Use Changes

The aim of this study was to evaluate the differential response land use changes between native forest and croplands regarding quantitative soil variables aggregate weight classes different carbon pools in extremely kaolinitic soils from east coast Brazil. In A horizon, total (TOC) dissolved (DOC) organic contents were analyzed. 0–0.08 m layer, content (Cag) determined for six size classes. mean (Δ) each property area calculated. Overall, TOC DOC greater sites over counterpart cultivated within area. ΔDOC all five areas negative. ΔCag 1–2 mm 0.053–0.105 Sooretama only ones with positive values. ordination by isolated Coruripe as most negative differentials, because conservation management cropland. differentials agricultural analyzed properties did not reveal a possible effect texture.