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DESERTIFICATION: SERIOUS THREAT OR GLOBAL MYTH

DESERTIFICATION DEFINITIONS . The definition of desertification adopted by the

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DESERTIFICATION: SERIOUS THREAT OR GLOBAL MYTH

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    1. DESERTIFICATION: SERIOUS THREAT OR GLOBAL MYTH? Introduction and Definitions-

    2. DESERTIFICATION DEFINITIONS The definition of desertification adopted by the ‘Convention to Combat Desertification’ is:

    3. SOME FACTS Desertification is a worldwide phenomenon causing land degradation. 5.1 billion hectares of the Earth’s surface is made up of arid, semi-arid and dry sub-humid areas. It is mainly considered as a combination of natural/ climatic processes and human interferences

    4. AREAS AT RISK FROM DESERTIFICATION

    5. CAUSES AND CONSEQUENCES OF DESERTIFICATION: HUMAN Overgrazing

    6. CAUSES AND CONSEQUENCES OF DESERTIFICATION: HUMAN Deforestation

    7. CAUSES AND CONSEQUENCES OF DESERTIFICATION: ENVIRONMENTAL Short term environmental variation

    8. CASE STUDY- THE SAHEL The West African Sahel is the most seriously affected region for desertification in the world. (severe drought 1968-1973) It is a semi-arid zone south of the Sahara desert and rainfall is highly variable. Four main causes of desertification identified in the Sahel: overcultivation, overgrazing, deforestation and mismanagement of irrigation.

    9. THE MAIN CONTROVERSIES Is desertification a serious threat or a global myth? Is desertification a result of natural/ climatic processes or human interferences or a combination of the both?

    10. MAIN CAUSES FOR DESERTIFICATION

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