The relationship between the use of land cover and urban thermal islands using Landsat 8: Case study of Sanandaj
محورهای موضوعی : فصلنامه علمی پژوهشی سنجش از دور راداری و نوری و سیستم اطلاعات جغرافیایی
loqman rahimi
1
(Master of Remote Sensing and Geographic Information Systems, Yazd branch, Islamic Azad University, Yazd, Iran.)
کلید واژه: land use, surface temperature, Sanandaj city, Landsat 8 satellite images, urban thermal island,
چکیده مقاله :
Growing population growth (including natural increase and migration) and rapid industrial growth are one of the main causes of global climate change. Today, the most important problem in urban areas is the increase in surface temperature due to changes in natural levels. In urban areas, depending on the type of land and vegetation used, areas with different temperatures develop from other areas. In this research, to answer the question how different types of the urban usage affect the creation of high temperature areas with the aim of understanding the temperature difference between different regions of the city and the surrounding area in order to provide a thermal island map in Sanandaj, discharge and surface temperature in Sanandaj was estimated using Landsat 8 satellite data by Jenks method in the summer and autumn. For this purpose, Envi and Arc GIS software were used, and finally, changes in surface temperature were evaluated in comparison to against land uses, and the role of each user in the creation of surface temperature was determined. The results of the research showed that Bayer land, industrial and urban facilities have the highest temperature and commercial applications and the green space has the lowest temperature, a result, the influence of urban utilization in the emergence of the current thermal conditions in Sanandaj (indicates the relationship between the type of user and the surface temperature.
Growing population growth (including natural increase and migration) and rapid industrial growth are one of the main causes of global climate change. Today, the most important problem in urban areas is the increase in surface temperature due to changes in natural levels. In urban areas, depending on the type of land and vegetation used, areas with different temperatures develop from other areas. In this research, to answer the question how different types of the urban usage affect the creation of high temperature areas with the aim of understanding the temperature difference between different regions of the city and the surrounding area in order to provide a thermal island map in Sanandaj, discharge and surface temperature in Sanandaj was estimated using Landsat 8 satellite data by Jenks method in the summer and autumn. For this purpose, Envi and Arc GIS software were used, and finally, changes in surface temperature were evaluated in comparison to against land uses, and the role of each user in the creation of surface temperature was determined. The results of the research showed that Bayer land, industrial and urban facilities have the highest temperature and commercial applications and the green space has the lowest temperature, a result, the influence of urban utilization in the emergence of the current thermal conditions in Sanandaj (indicates the relationship between the type of user and the surface temperature.
