Effects of Land Use and Land Morphology on Land Surface Temperature: A Case Study for Bojnourd City, North Khorasan

Subject Areas : Natural resources and environmental management

zahra parvar ¹ , marjan mohammadzadeh ² , sepideh saeidi ³

1 - PhD student ,Environmental science and engineering, Faculty of Fisheries and Environmental Science, Department of Environmental Science, Gorgan University of Agricultural Sciences and Natural Resources.
2 - Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Iran
3 - Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Iran

Received: 2022-11-17 Accepted : 2022-12-29 Published : 2024-06-26

Keywords: Land surface temperature, Split window algorithm, LANDSAT 8, Bojnourd City,

Abstract :

Urbanization can affect land surface temperature (LST) on a global scale by changing the natural land forms. Reducing the consequences of climate changes, requires to develop a coherent land use/cover management plan that restricts unplanned urban expansion and increases green cover. The purpose of this study is to investigate how features and spatial patterns of urban areas and its surroundings affect the LST of Bojnord city. For this, a split-window algorithm (SWA) used for land surface temperature (LST) retrieval from Landsat 8 TIRS of 2021. Based on the results, the main centers of high heat emission in urban areas such as public facilities, car parks and industrial areas have higher LST (more than 38 °C) compared to urban green spaces (less than 36 °C)c, which are cooler parts of the city. Comparing the results with MODIS nighttime LST reveals the different behavior of LST in day and night in urban and non-urban areas. In this study, the difference between day and night LST was revealed using MODIS nighttime LST. The spatial autocorrelation result show the contrast of LST behavior in urban and peri-urban fabric in semi-arid regions. The presence of hot spots in permeable surface areas such as agricultural land and cold spots in impermeable areas indicate the opposite effect of urban heat island in such areas. Understanding the complex interactions of urban land uses and LST by considering regional climate patterns can help managers and urban planners to improve the quality of life in urban areas.