Analytical study of land surface temperature with NDVI and NDBI using Landsat 8 OLI and TIRS data in Florence and Naples city, Italy

European Journal of Remote Sensing

Neetu Gill¹  Subhanil Guha²  Himanshu Govil²  Anindita Dey³ 

[1] Chhattisgarh Council of Science and Technology;National Institute of Technology Raipur;Nazrul Balika Vidyalaya;

关键词: Land surface temperature (LST);    normalized difference vegetation index (NDVI);    normalized difference built-up index (NDBI);    land use/land cover (LU–LC);    urban thermal field variance index (UTFVI);    urban heat island (UHI);   

DOI  :  10.1080/22797254.2018.1474494

来源: DOAJ

【 摘 要 】

The present study focuses on determining the relationship of estimated land surface temperature (LST) with normalized difference vegetation index (NDVI) and normalized difference built-up index (NDBI) for Florence and Naples cities in Italy using Landsat 8 data. The study also classifies different land use/land cover LU–LC) types using NDVI and NDBI threshold values, iterative self-organizing data analysis technique and maximum likelihood classifier, and analyses the relationship built by LST with the built-up area and bare land. Urban thermal field variance index was applied to determine the thermal and ecological comfort level of the city. Several urban heat islands (UHIs) were extracted as the most heated zones within the city boundaries due to increasing anthropogenic activities. The difference between the mean LST of UHI and non-UHI is 3.15°C and 3.31°C, respectively, for Florence and Naples. LST build a strong correlation with NDVI (negative) and NDBI (positive) for both the cities as a whole, especially for the non-UHIs. But, the strength of correlation becomes much weaker within the UHIs. Moreover, most of the UHIs (85.21% in Naples and 76.62% in Florence) are developed within the built-up area or bare land and are demarcated as an ecologically stressed zone.

【 授权许可】

Unknown