This increase is attributed to a combination of human factors and climatic factors. Desertification The Process Which Turns Productive Desert Land Into Non Productive. 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 , … Deserts And Desertification (Slideshare) http://www.slideshare.net/WERI/deserts-and-desertification-the-causes-consequences-and-challenges-presentation. The threshold is 10 inches, or 25cm. Desertification: Desert is a region almost devoid of vegetation due to low rainfall. 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. No public clipboards found for this slide. Desertification can exist at high altitudes too, however – and when this happens, the desert will be cold. 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… 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. is the process by which land becomes desert; 2 Case study the Sahel. The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture. A good example is the deserted rocky peaks of a mountain. Precipitation levels are in the Thar Desert are very low, between 120-240mm, and evaporation rates are high. https://www.slideshare.net/lab82/deserts-and-desertification-powerpoint Desertification is the persistent degradation of dryland ecosystems.It affects the livelihoods of millions of people. Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly more arid. Desertification is a process of gradual degradation of productive arid and semi-arid land into biologically unproductive land due to natural or anthropogenic factors. Desertification . is the process by which land becomes desert; 2 Case study the Sahel. - an increasing population results in larger desert areas being farmed. Now customize the name of a clipboard to store your clips. According to UN’s Agenda 21, desertification is, “Land degradation in arid, semi-arid and dry sub-humid areas resulting from various factors, including climatic variations and human activities.”. O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários. Development challenges in the Thar Desert. You often hear about temperature changes, sea level rising, and shifting climate zones. However, those plants have some defensive mechanisms like sharp spines and chemical-laden leaves which are used to discourage vegetal-eaters. The former includes indirect factors like population pressure, socioeconomic and policy factors, and globalization phenome… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. What is desertification? Clipping is a handy way to collect important slides you want to go back to later. Desertification: Desert is a region almost devoid of vegetation due to low rainfall. But more than simp… Desertification . 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 DEFINITION process by which the land is turned to desert CAUSES NATURAL – climate HUMAN – non-sustainable farming methods . Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities. If you continue browsing the site, you agree to the use of cookies on this website. https://www.slideshare.net/IlenyaDimech/desertification-58141961 Firstly, it can mean the process of expansion of an existing desert. The Millennium Ecosystem Assessment developed four plausible scenarios to explore the future of desertification and human well-being until 2050 and beyond. The desert areas may be arid, semi-arid and dry sub-humid featuring well stored sands. How we define the desert biome are not about the types of rock, or the amount of sand, or even the temperature because there are both cold and hot deserts. 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. 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 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. Satellite data spanning more than twenty years now shows that the Sahel is holding its own against the Sahara and may be recovering with the return of near-normal rainfall. Looks like you’ve clipped this slide to already. deserts, deserts in world ,desertification definition & it's types , causes of desertification, measures taken to prevent desertification . Hot deserts are hostile, remote and challenging environments for development. 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. A good example is the deserted rocky peaks of a mountain. You can change your ad preferences anytime. • It becomes progressively drier • Unable to support any plant growth for food production. The Millennium Ecosystem Assessment developed four plausible scenarios to explore the future of desertification and human well-being until 2050 and beyond. See our Privacy Policy and User Agreement for details. Desertification is a process of gradual degradation of productive arid and semi-arid land into biologically unproductive land due to natural or anthropogenic factors. Using terms like “desert encroachment,” however, often conjures up misguided images of deserts that expand aggressively, colonizing the surrounding land. 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. Desertification can mean two things. 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. If you continue browsing the site, you agree to the use of cookies on this website. Precipitation levels are in the Thar Desert are very low, between 120-240mm, and evaporation rates are high. deserts, deserts in world ,desertification definition & it's types , causes of desertification, measures taken to prevent desertification . Development challenges in the Thar Desert. The Sahel as an example 5. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Desertification refers to the persistent degradation of dryland ecosystems by climatic variations and human activities. This is a presentation about desertification, the causes of desertification and how to control desertification. Now customize the name of a clipboard to store your clips. Sometimes PPT. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 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. 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. 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. 3. We live in a world where climate change is often a hot topic of discussion. 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. 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). Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. desertification 1. Looks like you’ve clipped this slide to already. desertification, sandization, arid lands, arid, semi-arid and dry sub-humid climates, ... some desert-areas animals come from eating plants of the same area of them. Water supply. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. A string of dry years shriveled vegetation in Africa's Sahel, causing some to fear that the Sahara Desert was shifting south. The desert areas may be arid, semi-arid and dry sub-humid featuring well stored sands. Home to a third of the human population in 2000, drylands occupy nearly half of Earths land area. Used with Stanadard Grade pupils at S3 as an introduction to the topic and with S4 pupils as revision. Desertification, then, we can infer, is the process by which a space becomes a desert. Presentation Summary : Desertification The process which turns productive desert land into non-productive. 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 is the degradation of grasslands, savannas , and woodlands to a more desert-like condition, with resulting decrease in plant production and the land's ability to support livestock grazing or other human uses.Vegetation becomes sparse; exposed soil becomes more vulnerable to erosion; and yields from cropland or grazing are reduced. Deep ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 419844-ZGYwM You can change your ad preferences anytime. In recent years, the desert has expanded in some areas, its sands enveloping farms and villages as a result of desertification. Ice deserts. Desertification PRESENTED BY HALIMA ZEB ABBASI 1 2. Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell). Whether through reduced PR, or the lack of a biotic pump effect, reduced forest cover appears to reinforce conditions that weaken the likelihood of precipitation. 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 … Desertification is a result of a long-term failure to balance demand for and supply of ecosystem services in drylands. 3. Read at : Google Alert - desertification http://www.slideshare.net/al3oufi/desertification-12841527 Desertification Slideshare Sometimes this is caused by climate changes, but more often than not it is a Addressing desertification is critical and essential to meeting the Millennium Development Goals. The International Film Festival entitled ‘Desert Nights - Tales from the Desert’ in Rome in December 2006 is an example of one such awareness–raising initiative. See our Privacy Policy and User Agreement for details. Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. But deserts are far more than this and there are multiple types. Desertification is the process of land turning into desert as the quality of the soil declines over time. 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: 4. Desertification can exist at high altitudes too, however – and when this happens, the desert will be cold. Ice deserts. However, something that we don't hear so much about is that over recent years there has been an 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. What is desertification • Desertification is land degradation process in arid and semi-arid areas. • It is a process by which fertile land is transformed into desert. Desertification in the US * * * * * * Precursers 10-fold increase in population between 1860 and 1920. APIdays Paris 2019 - Innovation @ scale, APIs as Digital Factories' New Machi... No public clipboards found for this slide. 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. Deserts conjure up specific ideas about topography: typically, that they are dry and sandy dunes or rock, or a mixture of both. typically losing its bodies of water as well as vegetation and wildlife. Desertification process when the biotic pump is absent (Makarieva and Gorshkov 2007). Clipping is a handy way to collect important slides you want to go back to later. Sheep, cattle and goats are … The simple explanation is that deserts are topographic landscapes that receive little precipitation in a typical year. The Tarim Desert Highway links the cities of Hotan (on the southern edge) and Luntai (on the northern edge) and the Bayingol to Ruoqiang road crosses the desert to the east. See our User Agreement and Privacy Policy. Most part of animals try to avoid 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. If you continue browsing the site, you agree to the use of cookies on this website. Desertification was singled out as a key instrument for poverty eradication in dryland rural areas. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Read at : Google Alert - desertification http://www.slideshare.net/al3oufi/desertification-12841527 Desertification Slideshare 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 User Agreement and Privacy Policy. If you continue browsing the site, you agree to the use of cookies on this website. Raising awareness of the problem 16. Addressing desertification is critical and essential to meeting the Millennium Development Goals. Water supply. 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. 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