Land use land cover change and land surface emissivity in Ibadan, Nigeria
Keywords:land use, surface emissivity, urban expansion, urban resilience, Ibadan
There are many drivers of climate change. The urbanization process has been adjudged to be one of the major factors influencing spatial variation in land use and land cover change (LULC), land surface temperature (LST), land surface emissivity (LSE), increasing greenhouse gases emission, and climate change. This article uses a multispectral satellite remote sensing and survey-based approach to examine the nexus of LULC and LSE in the Ibadan city region, Nigeria. The spectral reflectance, the sun angle spectral radiance of the Landsat imageries (2000, 2010, 2018) was corrected and converted from digital number. The LULC, Normalized Difference Vegetation Index (NDVI), Normalized Difference Built-Up Index (NDBI), LSE and LST were obtained from the analysis of Landsat imageries. From the findings, temperature increase was identified as a peculiar environmental issue. Analysis of the Landsat imageries revealed that the NDVI value increased from 0.44 in 2000 to 0.47 in 2018. The NDBI values showed that built-up areas in the core of the urban areas have the highest NDBI values (0.023-0.602). The spatio-temporal trends of LST were related to the changes in LULC, and the built-up area had the highest LSE. The maximum LST (43°C) was observed in the year 2018 at the core area of the city where building density was highest. The study suggests an application of cool pavements, green development, and urban forest regeneration for sustainable development.
Copyright: Copyright is transferred to the author(s) when an article is accepted for publication.
Publishing rights: When an author/s publish an article in Town and Regional Planning, the author/s enter into a non-exclusive publishing agreement. This means that author/s may upload a second copy to institutional repositories.
All articles are published under a Creative Commons Attribution Licence (CC BY 4.0); readers are welcome to reproduce, share and adapt the content without permission provided the source is attributed.
Disclaimer: Views and opinions expressed in this article are those of the author(s). Publication thereof does not indicate that the Editorial Staff or the University of the Free State accept responsibility for it.