Contents 1 Definitions 2 History 3 Areas affected 4 Vegetation patterning 5 Causes 6 Poverty 7 Countermeasures and prevention 7.1 Managed grazing 8 See also 9 References 10 Bibliography 11 External links

Definitions[edit] 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 accepted[2] of 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".[6] Desertification has been neatly 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."[7] Another major contribution to the controversy comes from the sub-grouping of types of desertification. Spanning from the very vague yet shortsighted view as the "man-made-desert" to the more broad yet less focused type as the "Non-pattern-Desert"[8] The earliest known discussion of the topic arose soon after the French colonization of West Africa, when the Comité d'Etudes commissioned a study on desséchement progressif to explore the prehistoric expansion of the Sahara Desert.[9]

History[edit] The world's most noted deserts have been formed by natural processes interacting over long intervals of time. During most of these times, deserts have grown and shrunk independent of human activities. Paleodeserts are large sand seas now inactive because they are stabilized by vegetation, some extending beyond the present margins of core deserts, such as the Sahara, the largest hot desert.[10] Desertification has played a significant role in human history, contributing to the collapse of several large empires, such as Carthage, Greece, and the Roman Empire, as well as causing displacement of local populations.[5][11][12][13][14] Historical evidence shows that the serious and extensive land deterioration occurring several centuries ago in arid regions had three epicenters: the Mediterranean, the Mesopotamian Valley, and the Loess Plateau of China, where population was dense.[11][15]

Areas affected[edit] Sun, Moon, and large telescopes above the desert[16] Drylands occupy approximately 40–41% of Earth’s land area[17][18] and are home to more than 2 billion people.[18] It has been estimated that some 10–20% of drylands are already degraded, the total area affected by desertification being between 6 and 12 million square kilometres, that about 1–6% of the inhabitants of drylands live in desertified areas, and that a billion people are under threat from further desertification.[19][20] As of 1998, the then-current degree of southward expansion of the Sahara was not well known, due to a lack of recent, measurable expansion of the desert into the Sahel at the time.[21] The impact of global warming and human activities are presented in the Sahel. In this area, the level of desertification is very high compared to other areas in the world. All areas situated in the eastern part of Africa (i.e. in the Sahel region) are characterized by a dry climate, hot temperatures, and low rainfall (300–750 mm rainfall per year). So, droughts are the rule in the Sahel region.[22] Some studies have shown that Africa has lost approximately 650,000 km² of its productive agricultural land over the past 50 years. The propagation of desertification in this area is considerable.[23] Some statistics have shown that since 1900 the Sahara has expanded by 250 km to the south over a stretch of land from west to east 6,000 km long.[24][25][26] The survey, done by the research institute for development, had demonstrated that this means dryness is spreading fast in the Sahelian countries. 70% of the arid area has deteriorated and water resources have disappeared, leading to soil degradation. The loss of topsoil means that plants cannot take root firmly and can be uprooted by torrential water or strong winds.[23][27] The United Nations Convention (UNC) says that about six million Sahelian citizens would have to give up the desertified zones of sub-Saharan Africa for North Africa and Europe between 1997 and 2020.[23][27] Another major area that is being impacted by desertification is the Gobi Desert. Currently, the Gobi desert is the fastest moving desert on Earth; according to some researchers, the Gobi Desert swallows up over 1,300 square miles (3,370 km²) of land annually. This has destroyed many villages in its path. Currently, photos show that the Gobi Desert has expanded to the point the entire nation of Croatia could fit inside its area.[28] This is causing a major problem for the people of China. They will soon have to deal with the desert as it creeps closer. Although the Gobi Desert itself is still a distance away from Beijing, reports from field studies state there are large sand dunes forming only 70 km (43.5 mi) outside the city.[29]

Vegetation patterning[edit] As the desertification takes place, the landscape may progress through different stages and continuously transform in appearance. On gradually sloped terrain, desertification can create increasingly larger empty spaces over a large strip of land, a phenomenon known as "Brousse tigrée". A mathematical model of this phenomenon proposed by C. Klausmeier attributes this patterning to dynamics in plant-water interaction.[30] One outcome of this observation suggests an optimal planting strategy for agriculture in arid environments.[31]

Causes[edit] Preventing Man-made Overgrazing Goats inside of a pen in Norte Chico, Chile. Overgrazing of drylands by poorly managed traditional herding is one of the primary causes of desertification. Wildebeest in Masai Mara during the Great Migration. Overgrazing is not caused by nomadic grazers in huge populations of travel herds,[32][33] nor by holistic planned grazing.[34] The immediate cause is the loss of most vegetation. This is driven by a number of factors, alone or in combination, such as drought, climatic shifts, tillage for agriculture, overgrazing and deforestation for fuel or construction materials. Vegetation plays a major role in determining the biological composition of the soil. Studies have shown that, in many environments, the rate of erosion and runoff decreases exponentially with increased vegetation cover.[35] Unprotected, dry soil surfaces blow away with the wind or are washed away by flash floods, leaving infertile lower soil layers that bake in the sun and become an unproductive hardpan. Controversially, Allan Savory has claimed that the controlled movement of herds of livestock, mimicking herds of grazing wildlife, can reverse desertification.[36][37][38][39][40] A shepherd guiding his sheep through the high desert outside Marrakech, Morocco

Poverty[edit] At least 90% of the inhabitants of drylands live in developing countries, where they also suffer from poor economic and social conditions.[19] This situation is exacerbated by land degradation because of the reduction in productivity, the precariousness of living conditions and the difficulty of access to resources and opportunities.[41] A downward spiral is created in many underdeveloped countries by overgrazing, land exhaustion and overdrafting of groundwater in many of the marginally productive world regions due to overpopulation pressures to exploit marginal drylands for farming. Decision-makers are understandably averse to invest in arid zones with low potential. This absence of investment contributes to the marginalisation of these zones. When unfavourable agro-climatic conditions are combined with an absence of infrastructure and access to markets, as well as poorly adapted production techniques and an underfed and undereducated population, most such zones are excluded from development.[42] Desertification often causes rural lands to become unable to support the same sized populations that previously lived there. This results in mass migrations out of rural areas and into urban areas, particularly in Africa. These migrations into the cities often cause large numbers of unemployed people, who end up living in slums.[43][44]

Countermeasures and prevention[edit] Anti-sand shields in north Sahara, Tunisia Jojoba plantations, such as those shown, have played a role in combating edge effects of desertification in the Thar Desert, India.[45] Techniques and countermeasures exist for mitigating or reversing the effects of desertification, and some possess varying levels of difficulty. For some, there are numerous barriers to their implementation. Yet for others, the solution simply requires the exercise of human reason. One less difficult solution that has been proposed,[46] however controversial it may be, is to bring about a cap on the population growth, and in fact to turn this into a population decay, so that each year there will gradually exist fewer and fewer humans who require the land to be depleted even further in order to grow their food. One proposed barrier is that the costs of adopting sustainable agricultural practices sometimes exceed the benefits for individual farmers, even while they are socially and environmentally beneficial.[47] Another issue is a lack of political will, and lack of funding to support land reclamation and anti-desertification programs.[48] Desertification is recognized as a major threat to biodiversity. Some countries have developed Biodiversity Action Plans to counter its effects, particularly in relation to the protection of endangered flora and fauna.[49][50] Reforestation gets at one of the root causes of desertification and is not just a treatment of the symptoms. Environmental organizations[51] work in places where deforestation and desertification are contributing to extreme poverty. There they focus primarily on educating the local population about the dangers of deforestation and sometimes employ them to grow seedlings, which they transfer to severely deforested areas during the rainy season.[52] The Food and Agriculture Organization of the United Nations launched the FAO Drylands Restoration Initiative in 2012 to draw together knowledge and experience on dryland restoration.[53] In 2015, FAO published global guidelines for the restoration of degraded forests and landscapes in drylands, in collaboration with the Turkish Ministry of Forestry and Water Affairs and the Turkish Cooperation and Coordination Agency.[54] Currently, one of the major methods that has been finding success in this battle with desertification. This is known as the Green Wall of China. This wall is a much larger scaled version of what American farmers did in the 1930s to stop the great Midwest dust bowl. This plan was proposed in the late 1970s, and has become a major ecological engineering project that is not predicted to end until the year 2055. According to Chinese reports, there have been nearly 66,000,000,000 trees planted in China's great green wall.[55] Due to the success that China has been finding in stopping the spread of desertification, plans are currently be made in Africa to start a "wall" along the borders of the Sahara desert as well. Techniques focus on two aspects: provisioning of water, and fixation and hyper-fertilizing soil. Fixating the soil is often done through the use of shelter belts, woodlots and windbreaks. Windbreaks are made from trees and bushes and are used to reduce soil erosion and evapotranspiration. They were widely encouraged by development agencies from the middle of the 1980s in the Sahel area of Africa. Some soils (for example, clay), due to lack of water can become consolidated rather than porous (as in the case of sandy soils). Some techniques as zaï or tillage are then used to still allow the planting of crops.[56] Another technique that is useful is contour trenching. This involves the digging of 150 m long, 1 m deep trenches in the soil. The trenches are made parallel to the height lines of the landscape, preventing the water from flowing within the trenches and causing erosion. Stone walls are placed around the trenches to prevent the trenches from closing up again. The method was invented by Peter Westerveld.[57] Enriching of the soil and restoration of its fertility is often done by plants. Of these, leguminous plants which extract nitrogen from the air and fix it in the soil, and food crops/trees as grains, barley, beans and dates are the most important. Sand fences can also be used to control drifting of soil and sand erosion.[58] Some research centra (such as Bel-Air Research Center IRD/ISRA/UCAD) are also experimenting with the inoculation of tree species with mycorrhiza in arid zones. The mycorrhiza are basically fungi attaching themselves to the roots of the plants. They hereby create a symbiotic relation with the trees, increasing the surface area of the tree's roots greatly (allowing the tree to gather much more nutrients from the soil).[59] As there are many different types of deserts, there are also different types of desert reclamation methodologies. An example for this is the salt-flats in the Rub' al Khali desert in Saudi-Arabia. These salt-flats are one of the most promising desert areas for seawater agriculture and could be revitalized without the use of freshwater or much energy.[60] Farmer-managed natural regeneration (FMNR) is another technique that has produced successful results for desert reclamation. Since 1980, this method to reforest degraded landscape has been applied with some success in Niger. This simple and low-cost method has enabled farmers to regenerate some 30,000 square kilometers in Niger. The process involves enabling native sprouting tree growth through selective pruning of shrub shoots. The residue from pruned trees can be used to provide mulching for fields thus increasing soil water retention and reducing evaporation. Additionally, properly spaced and pruned trees can increase crop yields. The Humbo Assisted Regeneration Project which uses FMNR techniques in Ethiopia has received money from The World Bank’s BioCarbon Fund, which supports projects that sequester or conserve carbon in forests or agricultural ecosystems.[61] It is argued that managed grazing methods are able to restore grasslands.[62] Managed grazing[edit] Restoring grasslands store CO2 from the air into plant material. Grazing livestock, usually not left to wander, would eat the grass and would minimize any grass growth while grass left alone would eventually grow to cover its own growing buds, preventing them from photosynthesizing and killing the plant.[63] A method proposed to restore grasslands uses fences with many small paddocks and moving herds from one paddock to another after a day or two in order to mimic natural grazers and allowing the grass to grow optimally.[63][64][65] It is estimated that increasing the carbon content of the soils in the world’s 3.5 billion hectares of agricultural grassland would offset nearly 12 years of CO2 emissions.[63] Allan Savory, as part of holistic management, claims that while large herds are often blamed for desertification, prehistoric lands used to support large or larger herds and areas where herds were removed in the United States are still desertifying.[62]

See also[edit] Wind erosion outside Leuchars Aridification Deforestation Soil retrogression and degradation Water crisis Mitigation: Desert greening Ecological engineering Oasification Environment portal Ecology portal Earth sciences portal Biology portal Global warming portal Sustainable development portal

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Retrieved 9 April 2014.  ^ Whitford, Walter G. (2002). Ecology of desert systems. Academic Press. p. 277. ISBN 978-0-12-747261-4.  ^ Bogumil Terminski (2011), Towards Recognition and Protection of Forced Environmental Migrants in the Public International Law: Refugee or IDPs Umbrella, Policy Studies Organization (PSO), Washington. ^ Geist, Helmut. "The causes and progression of desertification". Antony Rowe Ltd. Ashgate publishing limited. Retrieved 6 July 2013.  ^ Dregne, H.E. "Desertification of Arid Lands". Columbia University. Retrieved 3 December 2013.  ^ "Sun, Moon and Telescopes above the Desert". ESO Picture of the Week. Retrieved 30 April 2012.  ^ Bauer (2007), p. 78 ^ a b Johnson et al (2006), p. 1 ^ a b "UNCCD – Error 404 – Page Not Found" (PDF). Retrieved 21 June 2016.  ^ World Bank (2009). Gender in agriculture sourcebook. World Bank Publications. p. 454. ISBN 978-0-8213-7587-7.  ^ [1] ^ Riebeek, Holli (2007-01-03). "Defining Desertification : Feature Articles". 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"Regular and irregular patterns in semiarid vegetation". Science. 284 (5421): 1826–1828. doi:10.1126/science.284.5421.1826.  ^ (, Deutsche Welle. "Grid of straw squares turns Chinese sand to soil – Environment – DW.COM – 23.06.2011". Retrieved 21 June 2016.  ^ Laduke, Winona (1999). All Our Relations: Native Struggles for Land and Life (PDF). Cambridge, MA: South End Press. p. 146. ISBN 0896085996. Archived from the original (PDF) on 2 April 2015. Retrieved 30 March 2015.  ^ Duval, Clay. "Bison Conservation: Saving an Ecologically and Culturally Keystone Species" (PDF). Duke University. Archived from the original (PDF) on March 8, 2012. Retrieved April 13, 2015.  ^ "Holistic Land Management: Key to Global Stability" by Terry Waghorn. Forbes. 20 December 2012. ^ Geeson, Nichola et al. (2002). Mediterranean desertification: a mosaic of processes and responses. John Wiley & Sons. p. 58. ISBN 978-0-470-84448-9. CS1 maint: Uses authors parameter (link) ^ Savory, Allan. "Allan Savory: How to green the world's deserts and reverse climate change".  ^ Savory, Allan. "Holistic resource management: a conceptual framework for ecologically sound economic modelling" (PDF). Ecological Economics. Elsevier Science Publishers. Archived from the original (PDF) on 23 May 2013. Retrieved 10 March 2013.  ^ Butterfield, Jody (2006). Holistic Management Handbook: Healthy Land, Healthy Profits, Second Edition. Island Press. ISBN 1559638850.  ^ Savory, Allan. "Response to request for information on the "science" and "methodology" underpinning Holistic Management and holistic planned grazing" (PDF). Savory Institute. Archived from the original (PDF) on 23 May 2013. Retrieved 10 March 2013.  ^ Drury, Steve. "Large-animal extinction in Australia linked to human hunters". Earth-Pages. Retrieved 9 June 2014.  ^ Dobie, Ph. 2001. “Poverty and the drylands”, in Global Drylands Imperative, Challenge paper, Undp, Nairobi (Kenya) 16 p. ^ Cornet A., 2002. 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Bibliography[edit] Arnalds, Ólafur; Archer, Steve (2000). Rangeland Desertification. Springer. ISBN 978-0-7923-6071-1.  Barbault R., Cornet A., Jouzel J., Mégie G., Sachs I., Weber J. (2002). Johannesburg. World Summit on Sustainable Development. 2002. What is at stake? The contribution of scientists to the debate. Ministère des Affaires étrangères/adpf. Bauer, Steffan (2007). "Desertification". In Thai, Khi V. et al. Handbook of globalization and the environment. CRC Press. ISBN 978-1-57444-553-4. CS1 maint: Uses editors parameter (link) Batterbury, S.P.J. & A.Warren (2001) Desertification. in N. Smelser & P. Baltes (eds.) International Encyclopædia of the Social and Behavioral Sciences. Elsevier Press. pp. 3526–3529 Geist, Helmut (2005). The causes and progression of desertification. Ashgate Publishing. ISBN 978-0-7546-4323-4.  Hartman, Ingrid (2008). "Desertification". In Philander, S. George. Encyclopedia of global warming and climate change, Volume 1. SAGE. ISBN 978-1-4129-5878-3. CS1 maint: Uses authors parameter (link) Hinman, C. Wiley & Hinman, Jack W. (1992). The plight and promise of arid land agriculture. Columbia University Press. ISBN 978-0-231-06612-9. CS1 maint: Uses authors parameter (link) Holtz, Uwe (2007). Implementing the United Nations Convention to Combat Desertification from a parliamentary point of view – Critical assessment and challenges ahead. Online at [2] Holtz, Uwe (2013). Role of parliamentarians in the implementation process of the UN Convention to Combat Desertification. A guide to Parliamentary Action, ed. Secretariat of the UNCCD, Bonn ISBN 978-92-95043-69-5. Online at [3] Johnson, Pierre Marc et al., eds. (2006). Governing global desertification: linking environmental degradation, poverty and participation. Ashgate Publishing. ISBN 978-0-7546-4359-3. CS1 maint: Uses editors parameter (link) Lucke, Bernhard (2007): Demise of the Decapolis. Past and Present Desertification in the Context of Soil Development, Land Use, and Climate. Online at [4] Mensah, Joseph (2006). "Desertification". In Leonard, Thomas M. Encyclopedia of the developing world, Volume 1. Taylor & Francis. ISBN 978-0-415-97662-6.  Millennium Ecosystem Assessment (2005) Desertification Synthesis Report Moseley, W.G. and E. Jerme 2010. “Desertification.” In: Warf, B. (ed). Encyclopedia of Geography. Sage Publications. Volume 2, pp. 715–719. Oliver, John E., ed. (2005). "Desertification". Encyclopedia of world climatology. Springer. ISBN 978-1-4020-3264-6.  Parrillo, Vincent N., ed. (2008). "Desertification". Encyclopedia of social problems, Volume 2. SAGE. ISBN 978-1-4129-4165-5.  Reynolds, James F., and D. Mark Stafford Smith (ed.) (2002) Global Desertification – Do Humans Cause Deserts? Dahlem Workshop Report 88, Berlin: Dahlem University Press Stelt, Sjors van der (2012) Rise and Fall of Periodic Patterns for a Generalized Klausmeier-Gray-Scott Model, PhD Thesis University of Amsterdam UNCCD (1994) United Nations Convention to Combat Desertification The End of Eden a 90-minute documentary by South African filmmaker Rick Lomba in 1984 on African desertification Attribution  This article incorporates public domain material from the United States Government document "".

External links[edit] Beyerlin, Ulrich. Desertification, Max Planck Encyclopedia of Public International Law Bell, Trudy; Phillips, Tony (December 6, 2002). "City-swallowing Sand Dunes". NASA. Archived from the original on June 19, 2006. Retrieved 2006-04-28.  Desert Research Institute in Nevada, United States Environmental Issues – Desertification in Africa, The Environmental Blog Eden Foundation article on desertification FAO Information Portal – Properties and Management of Drylands UNEP (2006): Global Deserts Outlook UNEP Programme on Success Stories in Land Degradation/ Desertification Control United Nations Convention to Combat Desertification – Secretariat Procedural history and related documents on the United Nations Convention to Combat Desertification in those Countries Experiencing Serious Drought and/or Dersertification, Particularly in Africa in the Historic Archives of the United Nations Audiovisual Library of International Law A guide for desert and dryland restoration by David A. Bainbridge French Scientific Committee on Desertification (CSFD) Olive Trees May Be The Answer To Desertification The End of Eden on Youtube News Fighting Desertification Through Conservation Report on a project to stop the advance of the Sahara in Algeria – IPS, 27 February 2007 v t e Deforestation and desertification Deforestation Assarting Deforestation Deforestation and climate change Deforestation by region Deforestation during the Roman period Illegal logging Mountaintop removal Slash-and-burn Slash-and-char Desertification Aridification Desertification Moisture recycling Soil retrogression and degradation Water scarcity Mitigation Afforestation Arid Lands Information Network Biochar Conservation grazing Desert greening Ecoforestry Ecological engineering Farmer-managed regeneration Flexible Mechanisms Great Green Wall (Africa) Managed intensive rotational grazing Oasification Reforestation Three-North Shelter Forest (China) Related articles Allan Savory Biodiversity Economic impact analysis Environmental philosophy Extinction Intact forest landscape International Year of Forests Land surface effects on climate Land use, land-use change and forestry Natural landscape Neolithic Richard St. Barbe Baker Satoyama Terraforming Terra preta Wilderness World Forestry Congress Authority control NDL: 00576839 Retrieved from "" Categories: DesertificationEnvironmental soil scienceHuman overpopulationPaleoclimatologyHidden categories: CS1 maint: Uses authors parameterWebarchive template wayback linksWikipedia articles incorporating text from public domain works of the United States GovernmentCS1 maint: Uses editors parameter

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DecertificationEnlargeEnlargeLake ChadLand DegradationDrylandsClimate ChangeGlobal WarmingOverexploitationEnvironmental ProblemsPrinceton UniversityDeforestationUnited Nations Convention To Combat DesertificationFrench ColonizationWest AfricaDesertsSand SeaSaharaLoess PlateauEnlargeSunMoonVery Large TelescopeSaharaGobi DesertTiger BushOvergrazingGrazingHerdHolistic Management (agriculture)Allan SavoryEnlargeMarrakechMoroccoDeveloping CountryOvergrazingLand ExhaustionOverdraftingHuman OverpopulationHuman MigrationSlumsEnlargeSaharaTunisiaEnlargeJojobaThar DesertIndiaLand ReclamationBiodiversityBiodiversity Action PlanFloraFaunaReforestationPovertyFood And Agriculture Organization Of The United NationsGreen Wall Of ChinaWindbreakWoodlotWindbreakSoil ErosionEvapotranspirationSahelAfricaConsolidation (soil)TillageContour TrenchingLegumeNitrogenGrainBarleyBeansPhoenix DactyliferaSand FenceMycorrhizaRub' Al KhaliSaudi-ArabiaFarmer-managed Natural RegenerationEnlargeAllan SavoryHolistic ManagementEnlargeSoil ErosionLeucharsAridificationDeforestationSoil Retrogression And DegradationWater CrisisDesert GreeningEcological EngineeringOasificationPortal:EnvironmentPortal:EcologyPortal:Earth SciencesPortal:BiologyPortal:Global WarmingPortal:Sustainable DevelopmentInternational Standard Book NumberSpecial:BookSources/978-0-521-32312-3International Standard Book NumberSpecial:BookSources/978-0-12-747261-4International Standard Book NumberSpecial:BookSources/978-0-8213-7587-7International Standard Book NumberSpecial:BookSources/978-2-7483-9214-2Digital Object IdentifierInternational Standard Book NumberSpecial:BookSources/0896085996International Standard Book NumberSpecial:BookSources/978-0-470-84448-9Category:CS1 Maint: Uses Authors ParameterInternational Standard Book NumberSpecial:BookSources/1559638850Wayback MachineInternational Standard Book NumberSpecial:BookSources/978-0-306-46632-8Category:CS1 Maint: Uses Authors ParameterInternational Standard Book NumberSpecial:BookSources/978-0-7546-4243-5International Standard Book NumberSpecial:BookSources/9781461513278International Standard Book NumberSpecial:BookSources/978-0-7546-4243-5Wayback MachineYouTubeCopyright Status Of Work By The U.S. GovernmentUnited States GovernmentInternational Standard Book NumberSpecial:BookSources/978-92-5-108912-5Wayback MachineInternational Standard Book NumberSpecial:BookSources/978-0-7923-6071-1International Standard Book NumberSpecial:BookSources/978-1-57444-553-4Category:CS1 Maint: Uses Editors ParameterN. SmelserInternational Standard Book NumberSpecial:BookSources/978-0-7546-4323-4International Standard Book NumberSpecial:BookSources/978-1-4129-5878-3Category:CS1 Maint: Uses Authors ParameterInternational Standard Book NumberSpecial:BookSources/978-0-231-06612-9Category:CS1 Maint: Uses Authors ParameterInternational Standard Book NumberSpecial:BookSources/978-92-95043-69-5International Standard Book NumberSpecial:BookSources/978-0-7546-4359-3Category:CS1 Maint: Uses Editors ParameterInternational Standard Book NumberSpecial:BookSources/978-0-415-97662-6Millennium Ecosystem AssessmentWilliam G. MoseleyInternational Standard Book NumberSpecial:BookSources/978-1-4020-3264-6Vincent N. ParrilloInternational Standard Book NumberSpecial:BookSources/978-1-4129-4165-5BerlinThe End Of EdenRick LombaCopyright Status Of Work By The U.S. GovernmentUnited States GovernmentNASAUNEPUnited Nations Convention To Combat DesertificationAlgeriaInter Press ServiceTemplate:Deforestation And DesertificationTemplate Talk:Deforestation And DesertificationDeforestationDeforestationAssartingDeforestationDeforestation And Climate ChangeDeforestation By RegionDeforestation During The Roman PeriodIllegal LoggingMountaintop RemovalSlash-and-burnSlash-and-charIllegal Slash And Burn In MadagascarAridificationMoisture RecyclingSoil Retrogression And DegradationWater ScarcityAfforestationArid Lands Information NetworkBiocharConservation GrazingDesert GreeningEcoforestryEcological EngineeringFarmer-managed Natural RegenerationFlexible MechanismsGreat Green WallManaged Intensive Rotational GrazingOasificationReforestationThree-North Shelter Forest ProgramAllan SavoryBiodiversityEconomic Impact AnalysisEnvironmental PhilosophyExtinctionIntact Forest LandscapeInternational Year Of ForestsLand Surface Effects On ClimateLand Use, Land-use Change And ForestryNatural LandscapeNeolithicRichard St. Barbe BakerSatoyamaTerraformingTerra PretaWildernessWorld Forestry CongressHelp:Authority ControlNational Diet LibraryHelp:CategoryCategory:DesertificationCategory:Environmental Soil ScienceCategory:Human OverpopulationCategory:PaleoclimatologyCategory:CS1 Maint: Uses Authors ParameterCategory:Webarchive Template Wayback LinksCategory:Wikipedia Articles Incorporating Text From Public Domain Works Of The United States GovernmentCategory:CS1 Maint: Uses Editors ParameterDiscussion About Edits From This IP Address [n]A List Of Edits Made From This IP Address [y]View The Content Page [c]Discussion About The Content Page [t]Edit This Page [e]Visit The Main Page [z]Guides To Browsing WikipediaFeatured Content – The Best Of WikipediaFind Background Information On Current EventsLoad A Random Article [x]Guidance On How To Use And Edit WikipediaFind Out About WikipediaAbout The Project, What You Can Do, Where To Find ThingsA List Of Recent Changes In The Wiki [r]List Of All English Wikipedia Pages Containing Links To This Page [j]Recent Changes In Pages Linked From This Page [k]Upload Files [u]A List Of All Special Pages [q]Wikipedia:AboutWikipedia:General Disclaimer

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