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The desert areas may be arid, semi-arid and dry sub-humid featuring well stored sands. Desertification By: Andrew Augustus Anne Bragg What is Desertification Desertification is the degradation of land in arid and dry sub-humid areas, resulting primarily ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7a7975-MjhmM Desertification, then, we can infer, is the process by which a space becomes a desert. Deserts And Desertification (Slideshare) http://www.slideshare.net/WERI/deserts-and-desertification-the-causes-consequences-and-challenges-presentation. The Desert, Deserts of the World See Also: Desert Survival Tips , Overviews , Geography Index For MORE links, lessons and loads of other goodies for teachers and kids, continue on to see what Mr. Donn has for Landforms : including Mountains , Oceans , Rivers , Lakes , Islands , Plains , Coasts , … If you continue browsing the site, you agree to the use of cookies on this website. But more than simp… The former includes indirect factors like population pressure, socioeconomic and policy factors, and globalization phenome… DESERTIFICATION DEFINITION process by which the land is turned to desert CAUSES NATURAL – climate HUMAN – non-sustainable farming methods . This is a presentation about desertification, the causes of desertification and how to control desertification. Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. 3. Raising awareness of the problem 16. However, something that we don't hear so much about is that over recent years there has been an Desertification: Desert is a region almost devoid of vegetation due to low rainfall. See our Privacy Policy and User Agreement for details. Most part of animals try to avoid is the process by which land becomes desert; 2 Case study the Sahel. Desertification or Expanding desert • The United Nations official definition says desertification is land degradation in typically dry areas resulting from various factors, including climatic variations and human activities. See our User Agreement and Privacy Policy. https://www.slideshare.net/IlenyaDimech/desertification-58141961 The different scenarios are based on either increased globalization or increased regionalization, each combined with either a reactive or proactive way of addressing environmental issues. Desertification was singled out as a key instrument for poverty eradication in dryland rural areas. It occurs on all continents (except Antarctica) and affects the livelihoods of millions of people, including a large proportion of the poor in drylands. desertification 1. Considerable controversy exists over the proper definition of the term “desertification” for which Helmut Geist (2005) has identified more than 100 formal definitions.The most widely acceptedof these is that of the Princeton University Dictionary which defines it as “the process of fertile land transforming into desert typically as a result of deforestation, drought or improper/inappropriate agriculture” The earliest known discussion of the topic arose soon after the French colonization of West Africa, when the Comité d’Etud… APIdays Paris 2019 - Innovation @ scale, APIs as Digital Factories' New Machi... No public clipboards found for this slide. Precipitation levels are in the Thar Desert are very low, between 120-240mm, and evaporation rates are high. The pressure is increasing on dryland ecosystems for providing services such as food, forage, fuel, building materials, and water for humans and livestock, for irrigation, and for sanitation. is the process by which land becomes desert; 2 Case study the Sahel. The adverse impacts of desertification on dryland ecosystem services and limited success in rehabilitation demonstrate that it is more cost-effective to prevent desertification (C22.3.2, C22.6, R17). Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities. The desert areas may be arid, semi-arid and dry sub-humid featuring well stored sands. Desertification can mean two things. Presentation Summary : Desertification The process which turns productive desert land into non-productive. The U.N. Convention to Combat Desertification (UNCCD) defines it as land degradation in arid, semiarid and dry subhumid areas resulting from various factors, including climatic … However, those plants have some defensive mechanisms like sharp spines and chemical-laden leaves which are used to discourage vegetal-eaters. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. A cold desert may be sandy or rocky, but it will be a harsh environment where organisms have adapted in weird and wonderful ways so that they can survive. Using terms like “desert encroachment,” however, often conjures up misguided images of deserts that expand aggressively, colonizing the surrounding land. This is a destructive process where a fertile land filled with greenery and its own specific diverse wildlife converts into a barren land, which is similar to a desert. Desertification is a result of a long-term failure to balance demand for and supply of ecosystem services in drylands. The different scenarios are based on either increased globalization or increased regionalization, each combined with either a reactive or proactive way of addressing environmental issues. Africa is the continent most affected by desertification, and one of the most obvious natural borders on the landmass is the southern edge of the Sahara desert.The countries that lie on the edge of the Sahara are among the poorest in the world, and they are subject to periodic droughts that devastate their peoples. But deserts are far more than this and there are multiple types. Development challenges in the Thar Desert. Desertification . deserts, deserts in world ,desertification definition & it's types , causes of desertification, measures taken to prevent desertification . The Millennium Ecosystem Assessment developed four plausible scenarios to explore the future of desertification and human well-being until 2050 and beyond. You often hear about temperature changes, sea level rising, and shifting climate zones. Sometimes PPT. Looks like you’ve clipped this slide to already. An immense issue that numerous nations have is the way that there are large pockets of land that are experiencing a procedure that is known as desertification. We live in a world where climate change is often a hot topic of discussion. HUMAN LAND USES AR… O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários. Sheep, cattle and goats are … Desertification: Desert is a region almost devoid of vegetation due to low rainfall. Home to a third of the human population in 2000, drylands occupy nearly half of Earths land area. Desertification has occurred because desert ecosystems, which cover over one third of the world's land area, are extremely vulnerable to overexploitation and inappropriate land use, compounded by poverty, political instability, deforestation, overgrazing, and wasteful irrigation practices. Desertification, to put it plainly, is when land that was initially of another kind of biome transforms into a desert biome on account of changes of various types. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Desertification is a process of gradual degradation of productive arid and semi-arid land into biologically unproductive land due to natural or anthropogenic factors. Ice deserts. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Desertification, to put it plainly, is when land that was initially of another kind of biome transforms into a desert biome on account of changes of various types. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Sometimes this is caused by climate changes, but more often than not it is a typically losing its bodies of water as well as vegetation and wildlife. Addressing desertification is critical and essential to meeting the Millennium Development Goals. See our User Agreement and Privacy Policy. Desertification . Although the end-product is similar, Desertification is nothing like the preexisting deserts of our planet which consist of diverse dryland ecosystems and countless species. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. See our Privacy Policy and User Agreement for details. Desertification The Process Which Turns Productive Desert Land Into Non Productive. Hot deserts are hostile, remote and challenging environments for development. A string of dry years shriveled vegetation in Africa's Sahel, causing some to fear that the Sahara Desert was shifting south. The threshold is 10 inches, or 25cm. The Sahel is becoming more like desert with thin, dry, sandy soils ; Soil erosion has created bare rock ; Vegetation is sparse; 3 The UN environment programme took up combating desertification as a major part of its work. Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell). Desertification can exist at high altitudes too, however – and when this happens, the desert will be cold. A good example is the deserted rocky peaks of a mountain. A good example is the deserted rocky peaks of a mountain. 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