Evaluation of Vegetation Correlation With Surface Temperature Using Satellite Imagery (Case Study: Ardabil Province)

Surface temperature is one of the main indices of Earth's energy balance and has an impact on human life because all human activities, direct and indirect, are related to the temperature of the air, which is affected by the temperature of the earth's surface. Therefore, in this study, using Landsat satellite images dating from 19/05/1394, the relationship between vegetation and surface temperature in the northern part of Ardebil province was studied. To this purpose, vegetation indices (NDVI, SAVI, and LAI) and LST index using the Mono Window method were used in ENVI 4.8 software. The results showed that there is a direct correlation between vegetation indices and surface temperature, and in urban areas and Wasteland, the highest LST is evident, with the expansion of urbanization and the increase of desertification over the years, it will be added. Therefore, the northern and southeastern regions of the study area (including Moghan plain and Fandoghlo forests), which are rich in vegetation, have LST less (LST values in this region are around 290 to 300 Kelvin), and the central regions of the study area Which is poor in terms of vegetation and includes Wasteland with a higher LST (LST in this area is between 312 and 324 degrees Kelvin). The results of this study are very useful in environmental and natural resource conservation studies and could be the basis for environmental protection planning.