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Impact of Vegetation Density Change on Land Surface Temperature in Kuta Utara Sub district, Badung Regency, Bali Province a) Bachelor Program of Geography, Universitas Indonesia, Depok, Indonesia Abstract The increase in population that occurred year after year resulted in land function change. The land function change can impact on decreasing green open space and land surface temperature (LST), which is one of the important parameters in environmental change. The LST is increasing along with changes in land use. This study aims to identify vegetation density change and its impacts on land surface temperature in Kuta Utara Sub-district, by comparing two vegetation indices to decide which vegetation index is more suitable if it is associated with LST. The Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) methods were used to knowing vegetation density change. This study additionally used the Mono-window Brightness Temperature algorithm to find out the LST. This study used remote sensing and GIS technology. NDVI, EVI, and LST values were obtained through Landsat ETM+ and Landsat OLI TIRS in 2010, 2015, and 2020. The values are analyzed using the spatial-temporal analysis method to see the vegetation density change and LST from 2010, 2015, and 2020. The results of NDVI and EVI analysis showed there was a significant decrease in vegetation cover and density. The decrease in vegetation density, causing a significant increase in LST in Kuta Utara Sub-district from 2010, 2015, and 2020. Based on the analysis results, the more suitable vegetation index when it is related to LST is NDVI. It identified from the value of the NDVI analysis that is closer to one than the EVI analysis value. Keywords: LST- Vegetation- NDVI- EVI- Remote sensing Topic: Environmental Science, Technology, and Education |
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