It is land degradation occurring in arid, semiarid and dry sub-humid areas of the world. Broadly, these include social, political, economic, and natural factors which can vary on the country’s policies that lead to an unsustainable use of resources and agricultural uses – both of which are major root causes of the phenomenon. Desertification is the process of land turning into desert as the quality of the soil declines over time. The most important reason that cause of desertification is deforestation. 1.2 Known causes of desertification Along with climate change, there are a range of other factors that have been identified as major causes of desertification. Desertification is when formerly productive land becomes a desert due to a combination of natural and human factors. Reforestation gets at one of the root causes of desertification and isn’t just a treatment of the symptoms. The Causes of Desertification. Lavauden ( 1927 ) was the first to use the term “desertification” to describe the low productivity of rangelands in Tunisia. Some countries have developed Biodiversity Action Plans to counter its effects, particularly in relation to the protection of endangered flora and fauna. According to the UN desertification is “ land degradation in arid, semi-arid and sub-humid areas are resulting from various factors including climatic variations and human activities”. WHAT IS DESERTIFICATION? The Dust Bowl is a perfect example of desertification, the degradation of dryland ecosystems through a combination of natural and human causes.Droughts are an unavoidable occurrence in semi-arid regions like the Western United States, large portions of sub-Saharan Africa, Central Asia and Latin America. urbanization agriculture overgrazing decreased groundwater extraction increased biodiversity The causes of desertification include: overgrazing, groundwater extraction or over use and urbanization. Desertification and land degradation are among the main causes of low agricultural productivity in Senegal. Desertification is the conversion of habitable and fertile land to uninhabitable desert. Mix of causes. The Sahel is the semi-arid transition region between the Sahara desert to the north and wetter… http://imstuck.wix.com/imstuckgcserevision Desertification - What Are The Causes of Desertification? Causes of land desertification are a combination of natural phenomena and human activities. But the major causes behind it are often variations in climate and intrusive man-made activities. In addition to affecting human, plant, and animal populations, desertification also negatively impacts groundwater reserves, topsoil, and surface runoff. 3. - Card sort All differentiated resources: LA - low ability MA- mid ability HA - high ability Grass is essential for anchoring the surface soil in dryland regions. It is a […] In areas of low precipitation, like Sub-Saharan Africa, long droughts that turn arid land to unproductive, barren soil are a frequent cause of desertification. What are the causes of desertification? Or, to put it another way — desertification is the process by which previously biologically productive land is transformed into wasteland. Also read: How Melting Arctic Permafrost Can Lead To More COVID-Like Pandemics In Future About the Author: Soumi Lahiri, a law student who thrives on making this world a better place not only for humans but also for all the co-existing organisms on earth. Overgrazing - pounding the soil with their hooves, livestock compact the soil, increase the proportion of fine material, and reduce the percolation rate of the soil, thus encouraging erosion by wind and water. Man-Made Causes: Overgrazing. Over Cultivation. CAUSES OF DESERTIFICATION According to U.N. Convention to Combat Desertification (Greenfacts, 2016), desertification is a result of climatic variations and human activities occurring in arid, semi-arid, and sub-humid regions. Desertification is caused by a number of different issues. Causes of Desertification. One can generally distinguish between climatic factors such as natural disasters and human factors such as salinization of water sources or overexploitation of biological resources. These include things like climate change, deforestation, and overexploitation of soil by farming. The direct causes of desertification can be broadly divided between those relating to how the land is – or isn’t – managed and those relating to the climate. Destitution: All of the issues that we have discussed above (identified with the issue of desertification) can prompt neediness if … The vast majority of desertification in the present day is caused by harmful human activity. As an operational concept, the term desertification is nebulous, a murky mix of climatological variables and human activities that degrade lands in arid or semiarid regions (Morris 1995). Changes in Cropping pattern: The crop pattern in the region had drastically changed over the past decades. Drier conditions and unreliable rainfall. It does not mean the expansion of existing deserts. This causes swarming and overpopulation, which will, over the long haul, wind up proceeding with the pattern of desertification that began this in any case. In the Sahel slashing and burning of natural forest and bushland in order to clear land for annual agriculture is the main cause of this destruction. Climatic variations From Millennium Ecosystem Assessment report on Ecosystems and Human Well-Being Desertification Synthesis. Such declines may be the result of climate change, deforestation, overgrazing, poverty, political instability, unsustainable irrigation practices, or combinations of these factors. Its depletion causes desertification as the water table falls disrupting the equilibrium. It rains less than it did 50 years ago which contributes to an increased risk of soil erosion due to the lack of vegetation able to survive in these increasingly harsh conditions. Desertification is a global issue with a variety of causes that range from numerous factors. The most commonly cited forms of unsustainable land use are over-cultivation, over-grazing, deforestation, and poor irrigation practices. Desertification is the process by which the biological productivity of drylands (arid and semiarid lands) is reduced due to natural or manmade factors. CAUSES AND CONSEQUENCES OF DESERTIFICATION There are 4 main causes of desertification. According to a recent report from the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), “land degradation is almost always the result of multiple interacting causes”.. Causes of desertification in Marathwada. Desertification is a man-induced process that leads to soil nutrient depletion and reduction of biological productivity. Desertification is recognized as a major threat to biodiversity. The causes of dryland degradation, also referred to as desertification, remain controversial (Helldén 1991, Thomas 1997, Lambin et al. Human hands or natural occurrences can exacerbate or spark desertification. What is Desertification? 2.2 Causes of Desertification Desertification is caused by a number of factors, which have been the subject of significant debate. Desertification results in continued degradation of land and of fragile ecosystems. The causes of desertification. Photo credit: Ocean World Map of the Sahel in North Africa. Desertification, the process by which natural or human causes reduce the biological productivity of drylands. Causes for Desertification? 1. When this grass is exploited by livestock, the soil loses its support and blows away with the wind. These crops were not only conducive to Marathwada’s arid climate but were drought-resistant and led to moisture harvesting.