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Desertification in Africa

Desertification in Africa



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    Desertification Desertification Presentation Transcript

    • Desertification • Every country in North Africa is affected in some capacity by the Sahara Desert.
    • Desertification Desertification – is the change of fertile (good farm land) land that is too dry or damaged to support life. Main Causes Overgrazing- animals eat to much Over farming- farmers over use the soil Drought- there is nothing to hold down the good soil since all of the plants are dried up
    • Desertification • Topsoil is the top layer of ground that has the nutrients/food to help plants grow.
    • Desertification Desertification is threatening the way of life of many West African farmers. Solutions – Need to repair topsoil 1. Stop overgrazing or over farming fertile land. 2. New irrigation projects. 3. Pray for more rain.
    • The Sahel • The word Sahel means “shore” in Arabic. • Why is this an appropriate word to describe the Sahel? • Why would it be bad if the Sahara Desert is expanding?
    • The Sahel- Where desert meets savanna
    • Sub Sahara Africa- 2010’s
    • Land Desertification Facts: Sub Sahara • An estimated 485 million Africans (65 percent of the entire African population) are affected by desertification. • Approximately 22 percent of vegetated land (almost 500 million hectares) of Africa has been lost. • About 11 percent of total African land area (332 million hectares) is drylands affected by human/climate-induced desertification.
    • Dust Bowl United States 1930’s
    • Dust Bowl United States 1930’s
    • Dust Bowl Facts: United States • By 1934, because of years of repeated dust storms, approximately 100 million acres of farmland no longer had enough topsoil to grow crops. • In 1934, only 14.5 inches fell, which caused corn yield crops to drop by 75%. • Poor farming practices contributed to the Dust Bowl. These included: over planting crops and overgrazing, as well as massive plowing under of natural grasses and replacing them with crops that weren’t drought resistant
    • Dust Storms A massive dust storm 2 miles high traveled 2,000 miles before hitting the East Coast on May 11, 1934. For five hours, a fog of prairie dirt enshrouded landmarks such as the Statue of Liberty and the U.S. Capitol, inside which lawmakers were debating a soil conservation bill.
    • Solutions 1. Irrigation of the land 2. Crop rotation 3. Planting of drought resistant crops 4. limit grazing of animals