1, meaning different.
Topography refers to the ups and downs of the earth's surface. It is formed by internal forces (crustal movement, volcanic activity, earthquake, etc.). ), external forces (weathering, erosion, handling, deposition, etc. ) and human actions. According to the form, it can be divided into plain, mountain, hill, plateau and basin. Terrain generally refers to the state of ground fluctuation. Because of the high mountains, the plains are often flat and open. Refers to the local situation.
2. Different emphases
Topography refers to the surface morphological characteristics of this area. Its description generally includes altitude, terrain change, surface fluctuation (large or small) and typical landform types. Topography refers to the changing trend of the surface in this area and is a part of topographic characteristics.
3. Different components
The topography consists of five parts: plains, hills, mountains, plateaus and basins. Terrain consists of two parts, one is the "high and low conditions" of altitude, that is, the absolute height of surface morphology; The other part is the relative "ups and downs", that is, the relative height difference and slope.
4. The reasons are different.
According to its morphology, topography can be divided into five basic types: mountains, plateaus, plains, hills and basins. In addition, there are valleys, ridges, saddles, hilltops, depressions, steep cliffs, deltas and alluvial fans. Different terrains are often formed by the interaction of internal and external forces under different conditions.
5. Different sources
The terrain comes from "On protracted war" 70: "What does the shooting principle of' covering the body and developing firepower' mean? The former is to save oneself, and the latter is to destroy the enemy. Because of the former, there have been various methods of using topography, adopting leap-forward movement and expanding formation. " The terrain comes from the second chapter of Bi Ye's Spring without Flowers: "Two days later, a geographical geomantic gentleman used a compass to survey the terrain on the back of the mountain."