Cities across much of the world are experiencing a gradual increase in urban air temperature. A significant possible cause is an extreme reduction in urban greenery areas. Thus, land use planning is crucial in determining the quality of the outdoor environment. This paper investigates the UHI, or Urban Heat Island phenomenon, and the land-use impact in Salalah, Sultanate of Oman. To this end, UHI has been outlined in this paper with its thermodynamic characteristics and nature. Many studies investigated the type of land-use impact on UHI in urban regions. Previous studies are reviewed in this paper to determine how land use, particularly in urban areas, affects ambient temperature. Overall, the findings of the reviewed studies show that land use could influence urban temperature. Accordingly, a high-temperature difference was found between rural and urban areas, which emphasized the effect of green areas on ambient temperature. This in turn showed evidence of the effectiveness of natural areas, such as the existence of water bodies and green foliage or plants, in reducing the UHI intensity and its spread. Accordingly, urban planning processes should be more effectively considered in the future as Urban Heat Island (UHI) can be mitigated mainly by means of more rationally appropriate land use planning.

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