Contribution of urban heat island on landscape composition and its impact to the land surface temperature (case study on Palembang City-Indonesia)

Le résumé fourni par la source

Abstract Palembang is the capital of South Sumatra Province with the development carried out through the diversion of land functions into built-up land causes an increase in surface temperature which triggers the urban heat island (UHI) phenomenon. This study aims to discuss the phenomenon of UHI in Palembang City and its relation to land composition and population density on surface temperatures obtained from the processing of multi-temporal Landsat Images in 1989, 2001, 2018, with the specification of clear sky using the LST algorithm and guided classification. The distribution of the UHI phenomenon is obtained by classifying LST to obtain the UHI threshold. The value of the determinant coefficient (R2) between the relationship of changes in surface temperature which is directly proportional to the increasing population, the increase in the area of each open land and built-up land reached 62.6%, 86.3%, and 55.0%. Conversely, there is a negative link between surface temperature and dense vegetation with R2 reach 90.4%. The affected area of UHI is located in the centre of Palembang, reaching 33.5 km2 of the total area. It is necessary to have ideal city mitigation and arrangement by calculating the green area with the increasing population in Palembang City.

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