Analisis Perubahan Wilayah di Pulau Lombok Menggunakan Indikator Urban Heat Island dari Satelit Landsat 9

Himmah, Elok Faiqotul (2006) Analisis Perubahan Wilayah di Pulau Lombok Menggunakan Indikator Urban Heat Island dari Satelit Landsat 9. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pulau Lombok mengalami perkembangan wilayah yang ditandai oleh peningkatan aktivitas perkotaan dan perubahan tutupan lahan yang berpotensi memengaruhi kondisi termal permukaan. Penelitian ini bertujuan menganalisis distribusi spasial Urban Heat Island (UHI), hubungannya dengan Normalized Difference Vegetation Index (NDVI), dan keterkaitannya dengan intensitas cahaya malam Visible Infrared Imaging Radiometer Suite (VIIRS) di Pulau Lombok periode 2021–2025. Data yang digunakan meliputi citra Landsat 8/9 Collection 2 Level 2 dan VIIRS Day/Night Band periode Juli–Agustus, diolah menggunakan Google Earth Engine. Analisis mencakup perhitungan Land Surface Temperature (LST), penentuan UHI berbasis ambang batas tahunan (mean LST + 0,5σ), NDVI, statistik deskriptif, korelasi Pearson, regresi linear sederhana, dan regresi linear berganda. Hasil penelitian menunjukkan distribusi UHI bersifat konsisten secara struktural selama 2021–2025. Kota Mataram merupakan satu-satunya wilayah dengan nilai UHI median dan mean positif di seluruh tahun (median 0,19°C–3,13°C; mean 0,98°C–3,72°C), dengan persentase persebaran UHI mencapai 86,94% pada tahun 2025. Sebaliknya, Lombok Utara secara konsisten mencatat UHI terendah, sejalan dengan dominasi vegetasi rapat di lereng Gunung Rinjani. NDVI tertinggi ditemukan di Lombok Utara (median 0,82–0,85), sedangkan Kota Mataram memiliki NDVI terendah (0,40–0,45). Korelasi NDVI–UHI menunjukkan hubungan negatif dengan r = −0,631 dan R² = 0,398, artinya 39,8% variasi UHI dijelaskan oleh variasi NDVI. Hubungan VIIRS–UHI bersifat positif namun lemah (r = 0,276; R² = 0,076). Kota Mataram memiliki intensitas VIIRS tertinggi (median 10,97–15,12 nW/cm²/sr), 8–20 kali lebih tinggi dibanding kabupaten lainnya. Vegetasi terbukti lebih dominan dibanding aktivitas perkotaan dalam mengendalikan variasi UHI.
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Lombok Island has experienced regional development marked by increasing urban activity and land cover changes that potentially affect surface thermal conditions. This study aims to analyze the spatial distribution of Urban Heat Island (UHI), its relationship with the Normalized Difference Vegetation Index (NDVI), and its correlation with Visible Infrared Imaging Radiometer Suite (VIIRS) nighttime light intensity across Lombok Island from 2021 to 2025. The data used include Landsat 8/9 Collection 2 Level 2 imagery and VIIRS Day/Night Band data for the July–August period, processed using Google Earth Engine. The analysis covers Land Surface Temperature (LST) calculation, threshold-based annual UHI determination (mean LST + 0.5σ), NDVI, descriptive statistics, Pearson correlation, simple linear regression, and multiple linear regression. The results show that UHI distribution remained structurally consistent from 2021 to 2025. Mataram City was the only region with positive median and mean UHI values across all years (median 0.19°C–3.13°C; mean 0.98°C–3.72°C), with UHI coverage reaching 86.94% in 2025. In contrast, North Lombok consistently recorded the lowest UHI values, corresponding to dense vegetation on the slopes of Mount Rinjani. The highest NDVI was found in North Lombok (median 0.82–0.85), while Mataram City had the lowest NDVI (0.40–0.45). The NDVI–UHI correlation showed a negative relationship (r = −0.631, R² = 0.398), meaning 39.8% of UHI variation is explained by NDVI variation. The VIIRS–UHI relationship was positive but weak (r = 0.276, R² = 0.076). Mataram City had the highest VIIRS intensity (median 10.97–15.12 nW/cm²/sr), 8–20 times higher than other regencies. Vegetation was found to play a more dominant role than urban activity in controlling UHI variation.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Google Earth Engine, Landsat 9, Pulau Lombok, Urban Heat Island, VIIRS Google Earth Engine, Landsat 9, Lombok Island, Urban Heat Island, VIIRS
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography > GA102.4.R44 Cartography--Remote sensing T Technology > TD Environmental technology. Sanitary engineering > TD171.75 Climate change mitigation T Technology > TD Environmental technology. Sanitary engineering > TD194.6 Environmental impact analysis
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Elok Faiqotul Himmah
Date Deposited:	24 Jul 2026 03:54
Last Modified:	24 Jul 2026 03:54
URI:	http://repository.its.ac.id/id/eprint/137512

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