IJOG : Indonesian Journal on Geoscience
Vol. 13 No. 3 (2026)

Geospatial Analysis of LST and UHI Variability in Relation to Land Use/Land Cover Changes in Anambra State, Nigeria

Okechukwu Ebuka Agbasi (Department of Physics, School of Pure and Applied Science, Federal University of Technology Ikot Abasi (FUTIA), Ikot Abasi, Akwa Ibom State)
Jude Steven Ejepu (Department of Geology, School of Physical Sciences, Federal University of Technology, Minna, P.M.B. 65, Minna, Niger State)
Sunday Edet Etuk (Department of Physics, University of Uyo, P.M.B. 1017, Uyo, Akwa Ibom State)
Ubong Williams Robert (Department of Physics (Geophysics Research Group), Akwa Ibom State University, Mkpat Enin, P.M.B. 1162, Uyo, Akwa Ibom State)



Article Info

Publish Date
26 Oct 2026

Abstract

Rapid urbanization and land use/land cover (LULC) changes have significantly altered land surface temperature (LST) patterns and intensified urban heat island (UHI) effects, particularly in rapidly developing regions of sub-Saharan Africa. This study aims to analyze the spatial variability of LST and UHI in relation to LULC changes across urban and rural areas of Anambra State, Nigeria. The study integrates Landsat 8 satellite imagery (2019 and 2024), Shuttle Radar Topography Mission (SRTM) Digital Elevation Model (DEM), and geospatial analysis techniques. We classified LULC using a Support Vector Machine (SVM) algorithm and derived LST from thermal infrared bands using the Multi-Window Algorithm (MWA) with NDVI-based emissivity correction. UHI intensity was estimated using statistical threshold methods based on mean LST and standard deviation. Results indicate a 15.1% expansion of built-up areas, particularly in urban centres such as Onitsha, Nnewi, and Awka, leading to LST values exceeding 35.68°C and UHI intensities up to 30.59°C. In contrast, rural areas such as Ayamelum, Ogbaru, and Anambra West exhibited lower temperatures (below 31.37°C), attributed to higher vegetation cover and proximity to water bodies. However, ongoing deforestation and agricultural expansion have contributed to moderate temperature increases in rural regions. The study concludes that LULC changes are a primary driver of thermal variability in Anambra State. Sustainable land-use planning, afforestation, and climate-responsive urban design are essential for mitigating UHI effects and enhancing environmental resilience.

Copyrights © 2026






Journal Info

Abbrev

IJOG

Publisher

Subject

Earth & Planetary Sciences

Description

The spirit to improve the journal to be more credible is increasing, and in 2012 it invited earth scientists in East and Southeast Asia as well as some western countries to join the journal for the editor positions in the Indonesia Journal of Geology. This is also to realize our present goal to ...