As an essential factor of landform,slope gradient has impacted the processes of transformation of materials and energies.The main researches on slope have been reviewed,including slope mapping,slope effects of DEM type,slope scale effects involved to DEM resolutions,and transformation of coarser resolution DEM derived slope.The main problems puzzled researchers on slope is slope mapping methods,in which slope was thought of discrete data and mapping for each of the classes.These methods were not matched to ...
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