Influence of Land Use Types on Physical and Chemical Properties in Oba Hill Forest Reserve, Iwo, South-western Nigeria

Ecosystems have been affected by series of activities that occurred on lands. The effects land use change the physical and chemical properties soil in Oba Hill Forest Reserve studied using standard instrumentation techniques. Results obtained showed texture soils ranged from loam to sandy while pH four types 4.92 (acidic) 7.80 (alkaline).The bulk densities are natural forest (1.01 g/m3), teak plantation (1.21 farmland (1.55 g/cm3) residential (1.66 g/m3). Concentration Mn higher than Zn, Cu Fe all types. Higher mean concentration values is recorded (98.12±0.99 mg/kg) followed with value 74.32±0.52 had lowest 19.59±0.13mg/kg. Soils also highest concentrations (69.04±0.26 mg/kg), Zn (21.48±0.11mg/kg) (15.43±0.04 least (25.46±0.03 (8.59±0.01mg/kg) (3.55±0.01mg/kg) land. results revealed changing decrease organic matter, available nitrogen, moisture, porosity exchangeable cations, micronutrients increased density soils. This study has shown can affect existence essential nutrients soils.