The Inner Mongolia Prairie has not only grassland, but also many other land forms. On the edge of the prairie, hilly ground is the most common landform.
Inner Mongolia praire is a dry place, the annual precipitation is very low. So, there are no trees in the most place of Inner Mongolia. And the rainy season is from Jun to Sep. each year, only three months in summer. So, when the precipitaion is high in a certain year, the excessive rain could result to Debris Flows, see the picture belwo (The shape looks like a heart). Since there are no trees, flows may easily happen.
Since there are no trees and shelter on the Inner Mongolia Praire, rain and wind could easily erode stones, even the stone is hard enough, during a long period of time, it also could be eroded. See the picture below.
Then, let 's move down, to talk about the soil of Inner Mongolia Praire. Inner Mongolia Praire is an arid region (lack of water). So the preocess must be Calcification. See picture below. From the surface to the bottom, the soil is from rich to poor. And you can see the long root of grasses. Not only in Inner Mongolia Praire, I think this kind of soil is very common in most of the grassland in the world.
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