The methodology of studying changes in the Gobi region`s lake area

This study based on remote sensing methods of changes in the multi-year and seasonal changes in areas of the Buuntsagaan, Orog, Olgoy Lakes in the depression of lakes. Using Landsat 5 and 8 satellite 2000-2017, We used 14 pictures of water and vegetation index those were taken from the lake. Over the past decades, the Gobi region’s lakes have been decreased significantly. There are number of factors affecting changes in areas of the lakes. Finally, we concluded that the water level in the Baidrag and Tuin rivers are decreasing in Buuntsagaan and Orog Lakes.