Urban Growth Analysis of Ikire Town, Osun State, Nigeria Between 2000 And 2020

Abstract

The world is currently experiencing a continuous flow of development, and this development is accelerating urbanization through an evolutionary process. The current problems with urbanization are pervasive in emerging countries where development takes precedence over urban planning.  This study examined the urban growth of Ikire town in Osun State, Nigeria between 2000 and 2020 with a view to monitoring its urbanization for a sustainable development.   Landsat 7 ETM imageries of year 2000 and 2010 and Landsat 8 OLI/TIRS of year 2020 were the dataset used for the study.  Five categories of land use and land cover (LULC) classes were adopted from the processed images. from the attribute and statistical data generated from the classification outcome that was used for post-classification comparison across the years, the extent of urban land use was ascertained.  The results showed a remarkable growth in the study area between 2000 and 2020, with its areal extent increasing from 27.418 km² (8.9%) in 2000 to  48.500 km² (15.7%) in 2020 and a projection of 117.682 km² (38%) was estimated into the year 2060.  A decreased of the vegetation land cover from 203.198km² (65.9%) in 2000 to 175.371km² (56.9%) in 2020 was witnessed as a result of this growth. And due to people's need for food and shelter, agriculture land cover  grew over the years in this study.  Additionally, bare land experienced a slight decline from 19.3% in 2000 to (118.0%) in 2020 which led to continuous development and urban expansion.  The study concluded that the built-up area has grown in size over the past 20 years with attendant effects on the surrounding ecosystem.