Abstract

The Information on the effect of different land use systems on the aggregate stability and carbon sequestration is crucial for the recommendation of efficient land management practices. This study was conducted to evaluate the variation in aggregate stability and carbon sequestration under different land use systems in two agro ecological zones of south eastern Nigeria. The agro ecological zones were derived savannah and rainforest while the land use systems studied were cultivated, excavated, fallow, forest and grazing. The soil samples were collected at a depth of 0- 15cm using transect method and analyzed for particle size distribution, water stable aggregates, mean weight diameter, % aggregate stability, total organic carbon and organic carbon associated with water stable aggregates (4-2mm, 2-0.25 mm, 025-0.053 mm).The data collected were subjected to analysis of variance (ANOVA) in randomized complete block design (RCBD). The results show that land use did not affect particle size distribution and the effect of agro zone on aggregate stability indices (WDC, DR and MWD) was not significant(P