Pemetaan Kondisi Ekologi Perkotaan Skala Mikro Menggunakan Citra Landsat 8 di Kota Semarang

Hamim Zaky Hadibasyir(1*), Vidya Nahdhiyatul Fikriyah(2), M Iqbal Taufiqurrahman Sunariya(3), Danardono Danardono(4),

(1) Universitas Muhammadiyah Surakarta
(2) Universitas Muhammadiyah Surakarta
(3) Universitas Muhammadiyah Surakarta
(4) Universitas Muhammadiyah Surakarta
(*) Corresponding Author




DOI: https://doi.org/10.35580/lageografia.v18i3.13476

Abstract


Semarang City, as a capital city of a province in Indonesia, has experienced intensive rural or suburban migration to urban robinareas. Consequently, the land surface temperature (LST) is getting warmer in urbanized areas and leading to microscale temperature variation from time to time. The objectives of this study are 1) to investigate the geographical distribution of LST and vegetation covers in Semarang, and 2) to map microscale urban ecological condition with regards to LST based on urban thermal field variance index (UTFVI). Landsat 8 data was utilized to derive LST as well as vegetation covers by means of normalized difference vegetation index (NDVI). Next, UTFVI was classified based LST. This study revealed that relatively low NDVI values which mainly consists of built up areas and grassland are predominantly concentrated in the northern and central parts of Semarang. High NDVI values representing vegetation covers are predominantly located in the southern portion of Semarang. The most ecologically depressed areas are mainly distributed in the central portions of the city toward the northern portions of coastal areas. Prioritized sub-districts to be ecologically restored are Ngaliyan, Semarang Utara and Semarang Barat. Upcoming studies should emphasize on finding suitable measures to restore ecologically stressed areas.


Keywords


urban thermal field variance index (UTFVI); land surface temperature (LST); normalized difference vegetation index (NDVI); Semarang

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