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Topography plays an unraveled role in many biophysical processes and phenomena. The main problem, however, is that measurement, representation, and characterization of such a vast and continuous feature are very challenging. The accuracy of Digital Elevation Models (DEMs) has a direct influence on the results of the further landform analysis. In this paper, we use existing approaches of landform analysis with the use of global DEMs in the large-scale regional study. A detailed comparison was made between landforms...