This map is a hypsometric map which is being used by The Ministers of Environment of Central Asian Republic (CARs) to show the degradation of mountainous regions in this area.
A hypsometric map is used during topographic surveying to show the elevations of the earth by using batching, shading, or contour lines. If earlier maps are available, which include accurate elevations; a hypsometric map could show the rate of erosion. If this form of map were used in an area with volcanic activity, it could show the rate in which the land were rising.
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