Impact of Land Use on Spatial Distribution of Soil Nutrients in Akure North and Akure South Local Government Areas of Ondo State, South West Nigeria

Land use has great impacts on the distribution of nutrients in soils, Anthropogen- ic activities and recorded increase in population density in the study area is ex- pected to lead to great changes in the soil spatial nutrients distribution, data on the spatial distribution of nutrients in Akure North and South Local Government Area (LGA) of Ondo state is scarce, therefore it is important to fill this knowledge gap. This study shows the distribution of major soil nutrients and their spatial distribution in relation to land use in Akure North and South LGA of On- do State, South Western Nigeria. Nature and Anthropogenic activities coupled with land use have affected soil nutrients changes in the area therefore to study these activities major nutrients parameter determined (pH, OM, N, P, and K) were interpolated using ArcGIS Version 10.3, Microsoft Office, Erdas Imagine 2014. The study was conducted within A and B horizons of soil pedons. The soil pH ranged between very strongly acidic (4.70) to slightly acidic (6.71) in the top- soil (A1) and from very strongly acidic (4.81) to moderately acidic (5.77) in the subsoil. This distribution spanned over wide range of land area in the two LGA’s. High Organic Carbon (OC) concentration was found distributed along FECA and Iju axis. Soil Organic Carbon (SOC) in the topsoil ranged from very low (0.95 %) to high (3.04 %), and from very low (0.15 %) to moderate (2.84 %) in subsoil. Nitrogen concentrations in the study area fall sharply with depth from A1 to Btg2. Phosphorous, and Potassium were widely distributed in the study area. In- tegrated nutrient management system suggested in the study area.