Land use changes can cause the change in Land surface temperature (LST). LST is influenced by climatic conditions and physical characteristics of land surface. In this study, spatiotemporal variations of land surface temperature have been investigated in desert area of Dasht-e-Abbas of Ilam, based on a variety of land use changes. The investigated period of this study were 1990, 2000 and 2010 and the images were the Landsat satellite data. First; for mapping land use was used Fuzzy ARTMAP Neural Network Classification methods and then using NDVI Index were estimated land surface temperature. The results showed an increase in LST in those areas where degradation and land use changes have been taken place and vegetation crown cover has decreased. In 1990, 2000 and 2010, the average land surface temperature of fair rangelands as 26.72, 30.06 and 30.95, this rangelands has been reduced about 5% of its area. For poor rangelands the average LST were 26.95, 32.83 and 34.49 cº, respectively. This rangelands has been reduced 18% of its area. In 1990, 2000 and 2010, the average land surface temperatures of agricultural lands were 24.31, 27.87 and 28.61 centigrade, respectively. It had been an increasing trend. The reason can be attributed to changes in cropping patterns of the study area.
کلید واژگان :Land surface temperature, Land use, Fuzzy ARTMAP Neural Network, NDVI, Southwest of Iran
ارزش ریالی : 600000 ریال
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