Spatial Analysis of Temperature Changes in Batu City Due to Land Conversion in 2015-2020


Batu City has positioned itself as a center for organic agriculture based on international tourism, and, consistent with its vision in the Batu City Regional Spatial Plan for 2010-2030, the city will become a City of Tourism and Agropolitanism in East Java. From 2015 to 2020, Batu City increasingly developed, especially its tourism sector. The increased number of Batu City tourism sites indirectly illustrated changes in land use. The availability of relatively fixed land is not directly proportional to the high demand for land use and the decreasing vegetation cover. This has led to changes in land use and temperature. This research on temperature changes due to land conversion was carried out in Batu City, East Java. The research design employed Landsat 8 OLI/TIRS image processing using land surface temperature, the normalized difference vegetation index (NDVI), and the normalized difference built-up index (NDBI). The results showed a relationship between land conversion and temperature changes in Batu City, where there was a change in the land surface temperature interval in 2015-2020. Temperature changes were caused by conversion of forest into agricultural land and built-up land. Vegetated land areas were also converted, so land with dense and moderately dense vegetation decreased. The dense vegetation decreased from 3,757 hectares to 3,437 hectares, while the moderately dense vegetation decreased from 7,867 hectares to 7,531 hectares. Conversely, the sparsely vegetated land increased from 7,463 hectares to 8,117 hectares.

Keywords: land surface temperature, land conversion, Batu City

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