The textbook deals with degradation processes that occur in the climatic frame of desertification and they are referred to as desertification processes.

Chapter 1 concisely presents the development of pertinent concepts and definitions in the main international activities and events addressing the issue of desertification. Furthermore, the desertification processes in relation to farming systems prevalent in the ecosystems prone to desertification were presented. This introduction is an essential forward to the processes of desertification.

Chapter 2 presents concise assessment of the dry lands of the world, and the extend of desertification in these lands with reference to the various farming systems.

Chapter 3 gives a brief presentation of the causes of desertification. The three chapters were reduced to essentials because they may be addressed in other courses with different emphasis. The remaining successive chapters present the major desertification processes followed by the minor processes. Among the former group, wind erosion is the predominant desertification process in Sudan, followed by salinization/sodication.They were, thus presented in considerable details.