云贵高原 The Yunnan-Guizhou Plateau
The Yunnan-Guizhou Plateau
With an area of about 400,000 km2 and an average altitude of 1,000-2,000 m, the Yunnan-Guizhou Plateau is located in Yunnan and Guizhou provinces and is the fourth largest plateau in China.
A great number of rivers have scoured many deep and steep valleys on the Yunnan-Guizhou Plateau as it descends from west to east. The terrain in Yunnan Province, where there are many basins among the mountains, is comparatively complete, while that of the plateau in Guizhou Province is bumpy and irregular, causing people to say that, "there is no flat ground within three li (Chinese unit of length - half a kilometer)".
The basins have deep and fertile soil where agriculture is well developed and towns are concentrated.
Karst topography is widely distributed on the Yunnan-Guizhou Plateau. Karst forms gradually after limestone is dissolved and eroded by water over a long period of time under the conditions of high temperature and plentiful rain. There are many caves, underground rivers, stone roots, stalagmites and other odd topography. The Yunnan-Guizhou Plateau is one of the areas where the Karst topography has developed most completely and typically in the world.