This work was put together as an activity for the First Postgraduate Class in Environmental Sciences, in the subject of Recovery of Degraded Areas, in which the students endeavoured to do a good job in putting this book together. The book was put together with some of the students' main subjects of study, where their dissertations were in the area. In addition, this book, put together with the course tutors, will serve as a textbook for undergraduates taking the subject of Recovering Degraded Areas.