GEOSPATIAL ANALYSIS OF THE LAND USE AND LAND COVER CHANGES OF ILORIN METROPOLIS BETWEEN 2000 AND 2017 USING REMOTE SENSING AND GIS TECHNIQUES
No Thumbnail Available
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Surveying and Geoinformatics, Faculty of Environmental Sciences, University of Ilorin, Ilorin Kwara State Nigeria
Abstract
The paper focuses on geospatial analysis of the land use and land cover pattern in Ilorin
metropolis using Remote Sensing and Geographic Information System technique (GIS). Rapid
land use change has taken place in many developing cities of Nigeria including Ilorin over the
past decades. Information on the constant change in land use pattern for Ilorin metropolis is of
importance because the city is experiencing rapid land use/cover changes and because land
use/cover pattern information is indispensable for sustainable rural-urban land use planning and
development. Landsat 7 and 8 images of Ilorin metropolis at three epochs of the years 2000, 2010
and 2017 were used. Environment for visualizing images (ENVI) and ArcGIS software were used
for the image classification, image enhancement and further processing, analysis and land use
map production. The Land consumption rate and land absorption coefficient pattern were
analyzed. The results show that water body increased significantly from 0.474%, 0.474ha area in
2000 to 0.589% in 2010 and experienced even a greater increase in 2017 with 0.731% with an of
7.914ha of the total class. Built-up land increased massively from 26.901%, 420.534ha area
occupied in 2000 to 511.770ha, 39.439% area in 2010 and showed a slight drop between 2010
and 2017 to 501.822ha representing 46.333% of the total class. In 2000, vegetation occupies
36.254%, 566.748ha but experienced an increase of 9.33ha area and occupied the highest class
with 42.956% in 2010 but showed a massive decrease in 2017 to 358.761ha and 33.124% of the
total class. Bare land showed a consistent decrease from 2000 with 568.593ha, 36.372% to
220.806ha, 17.016% in 2010 to 214.581ha, and 19.812% area of the total class in 2017. The study
reveals increase in population of the metropolis, steady but increasing trend in built up land and
reduction in vegetation. If adequate measures are not put in place, there may be a great measure
of loss of naturally vegetated area in Ilorin metropolis, which is mainly because of urban growth
and expansion, farming and gully erosion. This paper also confirms the convenience, accuracy
and reliability of GIS and Remote Sensing techniques for geospatial analysis of landuse and land
cover changes. It is recommended that the information from the results of this work should be use
to optimally, effectively plan, and manage the study area
Description
Keywords
Land use/land cover,, Landsat,, Land use changes,, ENVI,, GIS