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In the present research, an effort has been made to comprehend the impact of urban land coverage the land surface temperature (LST) also whether there is any influence of this increased temperature on Mangalore city of Karnataka, India has been attempted. Metropolitan regions have greater temperatures compared their surroundings to other areas known as Urban Heat Island (UHI). Understanding changes in Land Use/Land Cover (LULC) and their effects on LST in Mangalore City’s urban environment is the primary goal of the current study. The city has expanded significantly over the years, and today there are a number of concrete buildings, asphalt/concrete roads, and developed areas in once vegetation-covered areas. Maximum likelihood algorithm and Anderson classification have been applied to generate LU/LC maps up to level III classes. The LST raised from 17 to 36 °C at the year 2022. The LULC area covering quarters of 47.16 km2 similarly the area covers the hotel of 28.41 km2. The apartments and residential area is 9.61 km2, Railways highways and airport covers almost 7.51 km2. The industries and companies covers the 6.21 km2 and other built up 7.72 km2. The LULC result shows that mixed agriculture covers 177.54 km2. The coconut and crop plantation covers the area of 17.52 km2. The study area covering the evergreen forest of 123.48 km2. The area covering the mixed forest of 62.55 km2. The area covers the river of 20.60 km2. The area covering the estuaries and lakes 4.29 km2 and 4.14 km2, and the reservoir covers 0.87 km2 including other water bodies 1.09 km2. The forest wetlands having area of 2.78 km2. The area covers the barren lands of 27.70 km2. The area covers the rock exposure 12.02 km2, the LST of the city has increased and the central part of city shows higher temperature due to the presence of impervious layers. Conversion of vegetation to grown-up areas. The detailed study based on the Geoinformatics approach has helped to understand the impact of land surface temperature on Mangalore’s urban environs and it has also helped to propose mitigating measures to lessen UHI.

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Assessment of Land Surface Temperature and Land Use Land Cover Changes In and Around Mangalore, Karnataka—A Study Based on Geoinformatics Approach

  • 会议论文

  • 发表日期：

    2025年

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  • R. Abhishek,
  • H. Gangadhara Bhat

摘要

In the present research, an effort has been made to comprehend the impact of urban land coverage the land surface temperature (LST) also whether there is any influence of this increased temperature on Mangalore city of Karnataka, India has been attempted. Metropolitan regions have greater temperatures compared their surroundings to other areas known as Urban Heat Island (UHI). Understanding changes in Land Use/Land Cover (LULC) and their effects on LST in Mangalore City’s urban environment is the primary goal of the current study. The city has expanded significantly over the years, and today there are a number of concrete buildings, asphalt/concrete roads, and developed areas in once vegetation-covered areas. Maximum likelihood algorithm and Anderson classification have been applied to generate LU/LC maps up to level III classes. The LST raised from 17 to 36 °C at the year 2022. The LULC area covering quarters of 47.16 km2 similarly the area covers the hotel of 28.41 km2. The apartments and residential area is 9.61 km2, Railways highways and airport covers almost 7.51 km2. The industries and companies covers the 6.21 km2 and other built up 7.72 km2. The LULC result shows that mixed agriculture covers 177.54 km2. The coconut and crop plantation covers the area of 17.52 km2. The study area covering the evergreen forest of 123.48 km2. The area covering the mixed forest of 62.55 km2. The area covers the river of 20.60 km2. The area covering the estuaries and lakes 4.29 km2 and 4.14 km2, and the reservoir covers 0.87 km2 including other water bodies 1.09 km2. The forest wetlands having area of 2.78 km2. The area covers the barren lands of 27.70 km2. The area covers the rock exposure 12.02 km2, the LST of the city has increased and the central part of city shows higher temperature due to the presence of impervious layers. Conversion of vegetation to grown-up areas. The detailed study based on the Geoinformatics approach has helped to understand the impact of land surface temperature on Mangalore’s urban environs and it has also helped to propose mitigating measures to lessen UHI.