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  2. Desertification - Wikipedia

    en.wikipedia.org/wiki/Desertification

    Desertification is a gradual process of increased soil aridity.Desertification has been defined in the text of the United Nations Convention to Combat Desertification (UNCCD) as "land degradation in arid, semi-arid and dry sub-humid regions resulting from various factors, including climatic variations and human activities."

  3. Desertification in Africa - Wikipedia

    en.wikipedia.org/wiki/Desertification_in_Africa

    A 10.3 million km2 area, or 34.2% of the continent's surface, is at risk of desertification. If the deserts (Sahara and Kalahari) are taken into account, the affected and potentially affected area is roughly 16.5 million km2 or 54.6% of all of Africa. 5.7 percent of the continent's surface is made up of very severe regions, 16.2 percent by ...

  4. Desert greening - Wikipedia

    en.wikipedia.org/wiki/Desert_greening

    A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.

  5. Great Green Wall (Africa) - Wikipedia

    en.wikipedia.org/wiki/Great_Green_Wall_(Africa)

    The Sahel region (brown), proposed Great Green Wall (green), and participating countries (white) Satellite photo of the Sahara The Great Green Wall or Great Green Wall for the Sahara and the Sahel (French: Grande Muraille Verte pour le Sahara et le Sahel; Arabic: السور الأخضر العظيم, romanized: as-Sūr al-ʾAkhḍar al-ʿAẓīm) is a project adopted by the African Union in ...

  6. Environmental issues in Turkmenistan - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_in...

    Environmental issues in Turkmenistan are most visible in three significant areas: desertification, the drying of the Aral Sea, and chemical pollution. All three of these areas are directly linked to agricultural practices in the country. [1] [2] Only the Sahara Desert in Africa has a

  7. Sandhills (Nebraska) - Wikipedia

    en.wikipedia.org/wiki/Sandhills_(Nebraska)

    The 1904 Kinkaid Act allowed homesteaders to claim 640 acres (260 ha; 2.6 km 2) of land, rather than the 160 acres (65 ha; 0.65 km 2) allowed by the 1862 Homestead Act. [10] Nearly nine million acres (36,000 km 2) were claimed by "Kinkaiders" between 1910 and 1917. Some of the Kinkaiders farmed the land, but these attempts generally failed.

  8. Environmental issues in Syria - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_in_Syria

    Soil erosion occurs when wind and water remove soil from an area. [22] If the topsoil and organic nutrients are removed, the land will become desert like and it will be difficult to support plant or animal life, in a process known as desertification. [22] The soil resources in Syria's coastal region is very fertile, however vulnerable to ...

  9. Historic desertification - Wikipedia

    en.wikipedia.org/wiki/Historic_desertification

    Historic desertification is the study of the desert-forming process from a historic perspective. It was presumed in the past that the main causes of desertification lay in overuse of the land resulting in impoverishment of the soil, reduced vegetation cover, increased risk of drought and the resulting wind erosion. However recent projects to ...