AZUKA Chukwuebuka Vincent
The study investigated the hydrological processes from the local to the catchment scale and spatial variability of soil properties. Detailed soil data was obtained and analyzed using SOTER and geostatistical approaches. The soils were mostly Plinthosols (> 55%), highly degraded, low in nutrient and soil-water retention capacity. Slope position and land use influenced soil hydrologic properties. The variability was high for Ksat, moderate for SOC, Avail.P and C:N, but low for TN, BD. Runoff coefficient at plot scale compared to the catchment scale revealed strong scale issues. Surface runoff was the dominant runoff component in the catchment. The modeled result was satisfactory and the water balance reflected the hydro-climatic condition of the catchment.