Landscape Composition and Its Effect on the Urban Thermal Environment in Kendari City

Abstract

Abstract The rapid urbanization activities in Kendari City over the last decade have changed its natural landscape, including demands for infrastructure development such as residential areas, which is currently one of the most massive activities. The purpose of this study was to analyse the effect of landscape composition on the urban thermal environment in the Kendari City area in relation to LST and UHI parameters based on UTFVI thresholds. Landsat 8 time series data for 2019 – 2023 is used to observe urban thermal environmental conditions in the study area. The results showed that during the last four years LST in Kendari City tends to increase every year with R 2 > 0.09. As a result of this increasing trend the UHI area in Kendari City also experienced an increase. More than 25% of the Kendari City area is indicated to experience the UHI phenomenon with SUHI ranging from 24 °C to the highest temperature and the concentration increases linearly with the density of the impervious surface area. However, this does not happen in areas with a landscape composition that is categorized as green space. As for the UTFVI results, more than 28% of the areas experiencing the UHI phenomenon are within the UTFVI threshold > 0.020 and more than 60% of the area in Kendari City is denoted as an area with relatively excellent conditions within the range ecological evaluation indices then the rest is in good and normal condition.