Delineating the heat islands in Digos City: A factor in urban development
Keywords:
urbanization, heat islands, normalized difference vegetation index, Landsat Enhanced Thematic Mapper, land cover, PhilippinesAbstract
The development of urbanization in Digos City is at its peak. This rapid transformation of urban areas leads to the study of urban heat island (UHI) formation in the city. In detecting this UHI, images obtained from the remote sensors were used to determine heat islands in Digos City. To identify the land cover of this UHI, the Landsat Enhanced Thematic Mapper is used. Upon this process, four major types of land cover were determined: urban, agriculture, vegetation, and barren areas that were utilized to highlight the heat island prevalent areas. UHI was evident and can be detected by fractional vegetation cover. This vegetation cover was derived by computing the normalized difference vegetation index (NDVI) from the images. The analysis of the difference of heat island areas between 2001 and 2007 was computed by subtraction method and verified by ground-truthing. With these processes, it is evident that there is heat island formation in Digos City.
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Copyright (c) 2017 Melanie Pecision, Adelaine Marie Dullin, Lowella Dumaguit, Daylyn Yting
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
