Analyzing the Impact of Urban Development on the Spatial Changes of the Thermal Island of Sari City

Document Type : Articles from PhD & Master Dissertations

Authors

1 Ph.D. student of climatology, Faculty of Social Sciences, Mohaghegh Ardabili University, Iran

2 Associate Professor of Physiography-Geography, Department of Geography, Faculty of Humanities and Social Sciences, University of Mazandaran, Iran

3 Assistant Professor of Physiography-Geography, Department of Geography, Faculty of Humanities and Social Sciences, University of Mazandaran, Iran

Abstract

In today's world, the speed of urbanization is increasing, and with this development, cities replaced a large part of agricultural and forest land. This factor caused the surface temperature of the city to be higher than its surrounding environment and created problems such as the heat island, which significantly affects the air quality and, subsequently, the public health of the society. In this research, the thermal island of the studied area, the process of changes, and its effects were investigated. In this way, Landsat 5 and 8 satellite images for the years 1990 to 2020, as well as software such as ENVI, ARC GIS, and GOOGLE Earth, were used, and the temperature change and hot and cold spots during thirty years were investigated and evaluated. The results were classified and categorized according to the desired goals and showed that the temperature is high in dense, barren, industrial uses, and lower in the parts with vegetation. During 30 years in Sari, the surface temperature and the number of hot spots increased. Most hot spots are concentrated in high-density areas and dense urban constructions while the cold spots in the images are mostly in the outskirts and parts outside the city, which are mostly covered by vegetation and open space; so, the extent of hot spots in 1990 was 14,300 square meters, and in 2020 it reached 267,660 square meters. Based on these results, it can be said that the number of human-made uses has increased in Sari, and more hot spots have appeared in this city and are still increasing.

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References

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Urban Structure and Function Studies
Volume 11, Issue 38
2024
Pages 215-240

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History

  • Receive Date: 01 October 2023
  • Revise Date: 29 November 2023
  • Accept Date: 18 December 2023

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