Impact of Land Use and Land Cover on Land Surface Temperature of Oluyole Local Government, Ibadan Oyo State, Nigeria

Abstract

The replacement of natural surfaces with synthetic materials that aggravate the environment is synonymous to urban spaces. Therefore, the objective of this paper is to evaluate the impact of land use and land cover on the land surface temperature (LST) of Oluyole Local Government Area in Ibadan, Nigeria using Landsat satellite images over a 20-year period (2000-2019). Data obtained were classified using the Maximum Likelihood algorithm supervised classification to create the Land-use Land cover (LULC) maps. Thereafter, the Land Surface Temperature (LST) was retrieved using the single-chan­nel method. The study area experienced shifts in land cover classes, including an increase in grassland (27.35%) and built-up (17.88%) areas, and a marginal decline in forest cover (1.91%). These changes corresponded to temperature variations, with an observed increase in LST of both minimum and maximum values (4.22oC and 4.01oC) between year 2000 and 2019 respectively. Forest conservation and sustainable land use practices are recommended to mitigate adverse climate effects associated with urban sprawl and land cover and land use change. This research contributes valuable insights for policymakers and urban planners aiming to balance development with environmental conservation and climate resilience.

Keywords

• vegetation;
• built-up areas;
• land use;
• urban