Abstract
Based on the support of the MAPGIS platform and using the four-stage remote sensing data of MSS \\TM\\ ETM\\ TM, the dynamic change of desertification in Kulun Banner of Tongliao City is obtained, and the reasons for the growth and decline of desertification in Horqin City are analyzed with the data of climate, population and cultivated land area. The results show that the desertification area of Kulun Banner has increased and decreased in the past 40 years. The center of severe desertification has been located in the northern edge of animal husbandry. The climate in Tongliao area tends to be dry and warm, population growth is relatively fast, and land use structure changes are closely related to the evolution of Horqin Sandy land.
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