Mapping Spatiotemporal Land Use Land CoverDynamics of Yewa South LGA of Ogun State for Urbanization Monitoring

Adewara, M. B and Oyewole, A.M and Adenaiya, O.O (2019) Mapping Spatiotemporal Land Use Land CoverDynamics of Yewa South LGA of Ogun State for Urbanization Monitoring. International Journal of Research in Engineering and Science (IJRES, 7 (3). pp. 69-79. ISSN 2320-9356

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Abstract

This research examines the Spatio-temporal changes of land use/ Land cover(LULC) and its effect on Land Surface Temperature (LST)in Ilaro town in Ogun state, Nigeria from historical remote sensing dataset (Landsat TM, ETM+ and OLI imageries acquired on 1990, 2000, 2010, 2018). Three sets of Landsat images were classified into five land use /land cover classes (built up, bare lands, vegetation and cultivated/mixed vegetation) using supervised classification algorithm in ENVI and ARCGIS. The result demonstrated that historical remote sensing images can be used to investigate change in LULC and also how the LULC affects the surface temperature of thestudy area. For each year, the surface temperature of the different classes was recorded, and the changes were noted.Landsat 8 OLI, Landsat 7ETM+ and Landsat 5 TM, were used for the LULC mapping and Land Surface Temperature analysis. The urban thermal field variance index (UTFVI) was applied to measure the thermal comfort level of the city. Results show that during the observed period, the study area experienced a gradual increasing rate in mean LST especially between 2000 and 2018 (>5% per annum).Findings showed that there are changes in Land use pattern in Ilaro changed between 1990 and 2018; about 20km 2 of thick vegetation was lost due to rapid urbanization in the town and built up areas increased rapidly by more than 70 percent. This change in LULC pattern significantly increased the amount of heat emitted in the metropolis, with more than 100C increase (40%) between 1990 and 2000 and 50C increase (9%) between 2000 and 2018. It is concluded that effective measures need to be taken to control the menace of rapid rise in LST in Ilaro town, which includes afforestation, preservation of water bodies and reduction of the amount of bare surfaces.

Item Type:	Article
Subjects:	T Technology > TH Building construction
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Unnamed user with email [email protected]
Date Deposited:	28 May 2021 15:38
Last Modified:	28 May 2021 15:38
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/1405

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