MONITORING URBAN GROWTH IN KADUNA METROPOLIS BETWEEN 1986 AND 2007 USING POST CLASSIFICATION COMPARISON CHANGE DETECTION TECHNIQUE.

Ahmed, M., Mohammed, M. U., Lamido, S. S. Zubairu, S.M. Abubakar, S. and Dalhatu, Z. M.

Monitoring the rate of growth of many Nigerian urban centres have become intractable due to dearth of adequate skill and tool which urban planners can use .In recent times Remote sensing and Geographic Information System, of which post classification comparison change detection technique is a component, have been resourceful in monitoring urban growth which efficacy is examined in this study. This study identifies and maps the growth of Kaduna Metropolis between 1986 and 2007. The rate of change is examined in order to ascertain and monitor urban expansion. Satellite images of two different dates (1986 and 2007) were used in this study. Analytical procedure, such as geometric correction, image to image core registration maximum likelihood supervised Image Classification technique was performed in order to achieve the aim of the work. The extents of urban growth were presented in tabular forms. The result shows that the total urban of Kaduna metropolis area increased by 193,565ha between the periods of study. The built up area increased at the rate of 0.01% in every year. The paper recommends the use of GIS as a tool for not only monitoring but planning urban development in cities with similar growth characteristics in Nigeria.

Key words: Urban growth, Change detection, Post Classification Comparison, Kaduna Metropolis.