Relationship between Land Surface Temperature and Land Use in Nakhon Ratchasima City, Thailand

  • Pakawan Chotchaiwong Chulalongkorn University
  • Saowanee Wijitkosum Chulalongkorn University

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Abstract

The relationship between land surface temperature (LST) and land use in Nakhon Ratchasima was studied using data gathered from three satellite images from Landsat-5 (30th January 1992), Landsat-8 (9 May 2016) and THEOS (17th February 2016). There were four categories of land use: built-up area, green area, bare land and water sources. The split-window concept was used to estimate the LST. In 1992, Nakhon Ratchasima city in Thailand comprised 47.76% built-up area, 37.45% green area, 13.19% bare land and 1.60% water sources. By 2016, the built-up area had increased by 23.04%, the green area had decreased by 16.66%, bare land had decreased by 6.81%, but water sources had increased by 0.43%.  Moreover, in 1992 the mean LST was 25.43 °C for built-up areas, 24.44 °C for green areas, 24.97 °C for bare land and 24.75 °C for water sources. However, by 2016 the LSTs had increased for each category: 28.74 °C for built-up areas (+3.31 °C), 27.20 °C for green areas (+2.76 °C), 28.11 °C for bare land (+3.14 °C) and 27.72 °C for water sources (+2.97 °C). The findings indicated that the LSTs increased with the pace of urbanization and changes in land use. Linear regression analysis revealed that built-up land had a positive correlation with LST, where a 1% increase in built-up area increased its LST by 0.146594 °C.

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Author Biographies
Pakawan Chotchaiwong

Department of Environmental Science Graduate School, Faculty of Graduate School, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand

Saowanee Wijitkosum

Environmental Research Institute, Chulalongkorn University, Chulalongkorn Research Building, 4th Floor, Phayathai Road, Pathumwan, Bangkok 10330, Thailand

Published
Vol 23 No 4, Aug 8, 2019
How to Cite
P. Chotchaiwong and S. Wijitkosum, “Relationship between Land Surface Temperature and Land Use in Nakhon Ratchasima City, Thailand”, Eng. J., vol. 23, no. 4, pp. 1-14, Aug. 2019.

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