عنوان مقاله [English]
Physical development of cities leads to extensive land use and, in some cases, to environmental risks as well as threats to human societies in different dimensions over time. On this basis, present research is aimed at keeping the extent of physical development of Sahneh City under surveillance by using satellite images, and at assessing different factors having effects on its development extent. To this end, satellite images taken in 1990, 2000, 2010 and 2018 were used. General process of the research is as follows: initially, land use maps of the study area were prepared for the study intervals. Next, Land Change Modeler (LCM) was used to evaluate the trends of land use changes and of urban and residential land use development in the study area. After that, urban and residential land use developments were predicted for 2030 by using Markov Chain model. Results of this research indicate that urban and residential land use has increased to 5.7 km2/yr in 2018 from 2.5 km2/yr in 1990, which will reach 7.1 km2/yr by 2030 based on predictions made. In addition, results of present research show that geomorphological factors are the most principal ones in the aspects of Sahneh physical development so that its process takes place toward the eastern and western parts of the city because of the mountain located at the north of city limits. The same process is predicted for 2030, too.