What is the danger of the ravine for the earth’s surface?

A ravine is a deep depression on the earth’s surface.
Unfortunately, the ravines are not as harmless as we think. They cause great harm to agriculture (agriculture), because they “take” territories where something could be grown.
“Due to” erosion, the upper fertile layer is destroyed, which negatively affects the earth’s surface.
There are activities that delay the process of soil erosion. People plant trees, the roots of which trap the soil, thereby preventing the development of this process.