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Estimation of impacts of land use and land cover (LULC) changes on land surface temperature (LST) within greater Imphal urban area using geospatial technique

  • Research Article - Anthropogenic Geohazards
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Abstract

The rapid increase in the urbanisation process and other developmental activities across the globe have increased the land surface temperature of built-up areas which is considered as an emerging urban environmental problem. The rapid unplanned urban sprawl has influenced the land use and land cover of the urban area leading to the development of the phenomenon of Urban Heat Island. The present study highlights how land use and land cover changes have impacted the land surface temperature and urban heat islands phenomenon in the greater Imphal city of Manipur in India. The study was carried out with multi-spectral and multi-temporal satellite imageries of 1988, 2000, 2011, and 2021, respectively. The extracted information from the rectified imageries highlights a significant increase in the land surface temperature in the built-up area of the city. The findings illustrate that the maximum and minimum LST of the Imphal urban area has significantly increased from 28.77 to 31.25 ℃ and 10.44 to 11.47 ℃, respectively, for the month of February from 1988 to 2021. The increase in land surface temperature is directly attributed to the increased built-up area (24.06% to 44.85%) and reduction in the urban forest cover (28.17% to 16.65%). Cumulatively, there is a 2.44 ℃ and 1.03 ℃ rise in maximum and minimum LST over three decades. The variability in the LST shows positive correlations with the NDBI and negative correlations with NDVI. The study witnessed nearly about 0.74 ℃ (maximum) and 0.31 ℃ (minimum) decadal changes in the overall LST in the greater Imphal area.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

The authors humbly acknowledge the Department of Earth Science, Manipur University, Canchipur, for providing ArcGIS software facilities for geospatial mapping and analysis.

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This research did not receive any specific grant from funding agencies in public, commercial, or not-for-profit sectors.

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Correspondence to Wazir Alam.

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Edited by Prof. Mehdi Abdolmaleki (ASSOCIATE EDITOR).

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Khan, R., Aribam, B. & Alam, W. Estimation of impacts of land use and land cover (LULC) changes on land surface temperature (LST) within greater Imphal urban area using geospatial technique. Acta Geophys. 71, 2811–2823 (2023). https://doi.org/10.1007/s11600-023-01159-5

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  • DOI: https://doi.org/10.1007/s11600-023-01159-5

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