In terms of geographical types, the map of China is generally marked with the following contents:
1, boundary line
Generally speaking, it is the boundary of administrative divisions, such as national boundaries and provincial boundaries. Some thematic maps will also show the boundaries of natural divisions, such as climate zones and agricultural zones.
2. Water system
Including rivers, lakes and oceans. Water system is the skeleton of the map and has a strong geographical positioning function.
3. Residential areas
Including cities, villages and towns.
4. Other important elements
Like the terrain.
5. Thematic contents of thematic maps, such as forest coverage rate, GDP data, population density and so on.
Extended data:
In terms of the number of geographical things, China maps often choose the following elements:
1, water system. Although the water system is the skeleton of the map, if the water system, especially the land water system, is not integrated, the map will be dense and chaotic, which will greatly affect readers' reading. Therefore, the water system needs to be selected according to the level. For example, some rivers on the map of China only take 1~2 rivers.
2. Residential area. On some maps that have nothing to do with the distribution of towns, keeping too many towns will also become a nightmare for people with high-density phobia. And unlike the water system, there is no need to mark the name. No matter how low the overall level of residential areas is, place names need to be marked. Obviously, symbols with excessive density will make it very difficult to mark notes. So generally speaking, most of the maps of China are reserved for county-level cities, and sometimes only provincial capitals and cities above are reserved.
3. the terrain. In China's non-topographic maps, there are few topographic notes, even if there are, only some topographic notes that seem to be widely distributed in the whole country, such as Tarim Basin and Qinghai-Tibet Plateau.