the problem with desertification is thus:
Africans (those in the industrially undeveloped areas, Zhukov, not all of them) need food or money RIGHT NOW OR THEY DIE. Therefore, seeing as they have item 1: lots of land and require item 2: lots of food, they tear through item 1: lots of land without regard for the consequences, and justifiably so, because they need item 2: lots of food.
Fallow field rotation, wet climate, soil quality and so on has stopped this in Europe over history (although it was a problem until about the 1600s) and while most farmers are still sloppy about things (compared to Japanese farmers, say, who are frankly astonishing at producing excellent quality crop efficiently).
The CAP is unfair, and should be repealed. But if we do this before introducing some means of improving african farms and methods (we could give them the CAP for a few years to do this, in fact
), the environmental damage caused could be extremely severe and indeed make their situation far worse than it now is