Authors : Marcus A. Idoko and Francis E. Bisong
Abstract: The dearth of data for research in Nigeria has masked the clear understanding of the land cover alteration processes due to land use change and their consequences. This research is focused on the use of geo-information to monitor landscape transformation in space and time. Satellite imageries of two epochs, covering Abuja Federal Capital Territory (FCT) were acquired. Landsat TM and Nigeria Sat were enhanced to improve visualization in ILWIS. The imageries were characterized into five classes (Vegetation, Built-up, Rock-outcrop, Waterbody and Farmland). The classification was done with maximum likelihood algorithm, which resulted in classes of each land use. The two classified images were compared to identify change between 1987 and 2004. A spatio-temporal change in land use type was obtained in quantitative terms. Vegetation covers in 1987 reduced by 85.22% in 2004, while built up increased by 21.99%, in 2004. Farmland cover increased by 0.14% during the period. This methodology offers access to quality digital image data, which improves the poor data base situation in Nigeria for better appreciation and knowledge of the interactions between man and his environment to leverage informed decisions.
Marcus A. Idoko and Francis E. Bisong, 2010. Application of Geo-Information for Evaluation of Land Use Change: A Case Study of Federal Capital Territory-Abuja. Environmental Research Journal, 4: 140-144.