What is tree planting and forest protection-combating desertification?

The disappearance of forests means a large area of soil erosion and the acceleration of desertification. At present, there are more than 100 countries in the world, 900 million people and 25% land are threatened by desertification, and the direct economic losses caused by desertification reach more than 40 billion US dollars every year. The area affected by desertification in China exceeds 1/3 of the total land area. Nearly 400 million people live in desert areas and are affected by desert, and the economic loss caused by desertification is as high as 54 billion yuan every year.