Reforestation is the solution to the problem of deforestation. In this the new plants of the same species are grown. Most of the time if a deforested area is left undisturbed, reforestation occurs by itself in that area. The only thing that is required is to prohibit the human intervention in particular area and this process is called Natural reforestation.

So, reforestation is the solution of deforestation. Following picture depicts reforestation: