Effect of Urbanization on Land Surface Temperature: A Case Study of Kathmandu Valley

Authors

  • Shudarshan Hamal Central Department of Environmental Science, Tribhuvan University, Kathmandu 44613, Nepal
  • Raju Chauhan Central Department of Environmental Science, Tribhuvan University, Kathmandu 44613, Nepal and, Department of Environmental Science, Patan Multiple Campus, Lalitpur 44700, Nepal https://orcid.org/0000-0002-0505-9007
  • Sudeep Thakuri Central Department of Environmental Science, Tribhuvan University, Kathmandu 44613, Nepal and, Faculty of Science and Technology, Mid-West University, Surkhet 21700, Nepal https://orcid.org/0000-0002-5278-9985

DOI:

https://doi.org/10.3126/tgb.v9i1.55427

Keywords:

Urban development, Kathmandu Valley, Land use land cover (LULC), Land Surface Temperature (LST)

Abstract

Growth in the population over time is bound to increase the expansion of densely populated areas which will change the dynamics of land use and land cover (LULC) directly or indirectly. The objective of this study is to analyze the effect of urban growth on the land surface temperature (LST) in Kathmandu. We used the maximum likelihood classification method for LULC classification and change detection of pre-monsoon satellite data for the years 2000, 2005, 2010, 2015 and 2020. LST was then calculated using the thermal infrared band from the satellite imagery. Finally, the relationship between urban growth and LST was assessed by correlation and regression analysis. The result shows an increase in urban areas by 241.61% of the total area between 2000 and 2020. The analysis of thermal patterns shows that there is a gradual increase in temperature in the urban area. With an overall accuracy of 89.96% and a Kappa coefficient of 0.86, the study shows high agreement between classified data from images. This study shows that urbanization has a significant positive impact on average land surface temperature. Sustainable city planning and strict adherence to the Land Use Act and regulations will assist to make the urbanization process more sustainable in the future.

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Published

2022-12-31

How to Cite

Hamal, S., Chauhan, R., & Thakuri, S. (2022). Effect of Urbanization on Land Surface Temperature: A Case Study of Kathmandu Valley. The Geographic Base, 9(1), 39–52. https://doi.org/10.3126/tgb.v9i1.55427

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Articles