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Impact of urban land cover change on land surface temperature

Impact of urban land cover change on land surface temperature

Igun, Eghosa and Williams, Meredith (2018) Impact of urban land cover change on land surface temperature. Global Journal of Environmental Science and Management, 4 (1). pp. 47-58. ISSN 2383-3572 (Print), 2383-3866 (Online) (In Press) (doi:10.22034/gjesm.2018.04.01.005)

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Abstract

The rapid growth in urban population is seen to create a need for the development of more urban infrastructures. In order to meet this need, natural surfaces such as vegetation are been replaced with non-vegetated surfaces such as asphalt and bricks which has the ability to absorb heat and release it later. This change in land cover is seen to increase the land surface temperature. Previous studies have tried to explain the impact of land cover changes on the land surface temperature. However, there is a growing need to spatially quantify the extent to which temperature has increased so as to identify areas where immediate mitigation measures can be introduced. In view of this, this study has incorporated remotely sensed Landsat data with remote sensing techniques in order to effectively quantify the spatial extent of urban growth and its impact on the land surface temperature in Lagos, Nigeria. The result shows that there have been changes in the land cover which has increased the land surface temperature between 2002 and 2013. Overall, there was an increase in the highly dense areas, moderately dense areas and less dense areas by 3.35% (2200.77 ha), 27.87% (13681.35 ha), 6.20% (3284.01 ha) and a corresponding increase in the mean land surface temperature of these urban areas by 3.8 oC, 4.2 oC and 2.2 oC. Hence, it was recommended that in order to reduce the land surface temperature of urban areas, sustainable urban planning strategies that include increasing the vegetated areas and embracing other green initiatives such as urban forestry should be adopted.

Item Type: Article
Additional Information: The deposited document is the author's accepted draft, uploaded for reference only. This document should not be made visible on the GALA webpage. The paper is In Press, and the abstract is online at http://www.gjesm.net/article_27798.html The full paper will be available online from 01 December 2017 on the website of this open access journal http://www.gjesm.net/ and this GALA entry should be edited with the DOI link to the full article once available
Uncontrolled Keywords: Enhanced thematic mapper; Land surface temperature; Linear mixture model; Urban heat island; Urban growth
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
T Technology > TD Environmental technology. Sanitary engineering
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 05 Apr 2018 14:00
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/17863

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