Evaluation of the effect of land use / land cover and vegetation cover change on land surface temperature: The case of Aydın province

Abstract

Rising population in the world triggered the increase of artificial surfaces like buildings, roads, etc in urban areas and has many negative impacts on climate change, ecosystems, environment, and people. Accordingly urban climatical research has been a significant research topic. Therefore, quantitative analyses of the impact of different land use / land cover (LULC) types and vegetation cover on the urban heat island (UHI) is very essential for urban planning. The UHI formation is generally measured by land surface temperature (LST), vegetation cover is characterized by Normalized Different Vegetation Index (NDVI) through the use of airborne or satellite thermal infrared remote sensing. In this context, this research aims to analyse the effects of changes in LULC, NDVI and LST between the years of 1990 and 2017 in Aydın, Turkey. In this paper, various quantitative analysis methods based on remote sensing and geographic information system have been used to measure the effects of LULC and NDVI on AYS. In this respect, the main materials of the analyses are composed of ten cloud free Landsat 5 in 1990 and Landsat 8 images in 2017 for the summer period in Aydın as well as the CORINE land cover data set. The results showed that decreasing vegetation cover in LULC had the strongest influence on the LST. On the other hand, the presence of vegetation and water especially woody patches (e.g. forest and water and wetlands) reduced this effect even the air temperature was highest.

Keywords

• urban heat island
• land surface temperature
• landsat
• ndvi
• lulc
• kentsel ısı adası
• arazi yüzey sıcaklığı
• landsat
• ndvi
• akaö