Desertification occurs due to a decrease in vegetation. Deforestation is one of the leading human causes of desertification. Desertification is, "land degradation in arid, semi-arid, and dry sub-humid areas resulting from various factors, including climatic variations and human activities". It is simple to plant trees, but complicated to reverse deforestation, which may eventually result in desertification. The Sahel is the semi-arid transition region between the Sahara desert to the north and wetter… Desertification can be reversed, but the way to do it is not taxing meat, milk and cow flatulence. The way to stop desertification is to stop degrading the soil with crop monocultures. Instead, animals and plants need to be raised together on bio-integrated farmsteads that keep soil ecosystems healthy. Why does deforestation cause desertification? For example, moderate desertification causes a 10–25% drop in agricultural productivity, while severe desertification can result in a productivity loss of 50% or more. The process of land transforming from desert to fertile land. Farming of an average land is causing desertification … Forests are being cut down at much larger scale than ever before, to be used as fuel, to provide products we use in our daily life, or to simply create more space for agriculture to sustain growing human population. However, if this area is not used for other purposes for some reason, chances are … John Oswald, Sarah Harris, in Biological and Environmental Hazards, Risks, and Disasters, 2016. Desertification is defined by the United Nations as land degradation in dry sub-humid, semi-arid, and arid areas. 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. What is desertification? Desertification occurring at the moment when land becomes irreversibly sterile • 4. On other hand overgrazing, over cultivation and salinization in irrigated croplands are also affecting desertification rates. The continuous over-exploitation of the vegetative cover by grazing animals, has led to an increase in desertification. Drought is normally considered as a consequence of natural reduction in the amount of precipitation received over an extended period of time. Another definition of desertification is the As recently as 2005, considerable controversy existed over the proper definition of the term " Extended droughts may mimic desertification, but vegetation may recover when seasonal rains return. Desertification, explained. This decline in biological productivity happens due to a variety of causes, including: Deforestation; Overgrazing; Climate change By cutting or burning down forests, the area that has previously been planted with trees can now be used for farming or other purposes. In desert regions conditions are not only getting warmer but … Causes of Desertification Quiz. There are a variety of factors that cause the issue of desertification. Populations move to find land that can provide the food and water they need. Human health and social effects. Combating Desertification in Arid Zone of India Institutional Infrastructure: The following institutions … Grass is essential for anchoring the surface soil in dryland regions. The causes of desertification. The vast majority of desertification in the present day is caused by harmful human activity. 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”. The process by which land wears away by the action of the sea, sand or river. Desertification . Natural Causes of desertification Drought is one of the major natural causes of desertification in the drylands. Lesson Plan Content. People need the wood and so fewer trees mean that the ground is left open to wind and water erosion. Climate Change Climate change is the most important cause of desertification. Desertification creates a kind of snowball effect. Desertification has been defined as land degradation in arid, semi-arid, and dry sub-humid areas resulting from various factors, including climatic variations and human activities[11]. Desertification, an intentionally foreboding term, is at its core land degradation in dryland environments.After nearly 40 years of international attention, the analysis of the causes and consequences of land degradation in dryland systems remains shrouded in the nuanced complexities … 2.2. The immediate cause is the removal of most vegetation. Overgrazing is the major cause of desertification worldwide. Overgrazing is the major cause of desertification worldwide. The former includes factors such as This is driven by a number of factors, alone or in combination, such as Too many animals eat all the vegetation on the area leaving it bare to wind erosion. Abstract. Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. 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”. Land degradation causes a decline in land productivity and is therefore likely to lead to increased levels of poverty. Vulnerability to desertification in Africa is assessed using the information on soils, climate, and the previously evaluated land resource stresses. b. Some scientists include Eritrea in the Sahel. By their very nature, arid and semiarid ecosystems are characterized by sparse or variable rainfall. When the days get warmer and periods of drought become more frequent, desertification becomes more The process is natural, but the human causes of desertification have vastly outpaced its natural speed. Desertification as a physical process brought by chemical, biological and physical factors that create desert like conditions • 2. Human hands or natural occurrences can exacerbate or spark desertification. ELL . How does overgrazing cause desertification? A consensual definition to desertification was proposed by the United Nations Convention to Combat Desertification (UNCCD 1994), as follows: “land degradation in arid, semiarid and subhumid areas, resulting from various factors including climatic variations and human activities”. When this grass is exploited by livestock, the soil loses its support and blows away with the wind. Desertification: Cause and Effect relationships among the claim(s), counterclaims, reasons, and evidence. - the global climate is getting warmer. The less land available to humans, the more we’ll exploit it. 6 ways to combat drought and desertificationSustainable energy. Marjorie Figueroa is one of the entrepreneurs who offer prepared dishes and crafts in Paine, 45 km south of Santiago.Water recycling. ...Pure mountain water. ...Fog, source of life. ...Rain water. ...Climate-resilient seeds. ... http://imstuck.wix.com/imstuckgcserevisionDesertification - What Are The Causes of Desertification? Desertification as a social process which focuses on humans as the cause of decreasing agricultural productivity • 3. Description: n this lesson, students will become familiar with the causes and effects of desertification through mapwork, completing a color-coding activity, and writing a short essay. These include indirect factors such as population pressure, socioeconomic and policy factors, and international trade as well as direct factors such as land use patterns and practices and climate-related processes. This can happen naturally due to a drought or can be caused by human activities. Desertification In The Sahel EXCERPT What is the Sahel? Permanent changes in climate, particularly rainfall, are responsible for natural desertification. In desert regions conditions are not only getting warmer but … The process by which land changes into desert. In simplest of terms; desertification is defined as the loss of trees and shrubs, leaving the land barren. Desertification results in continued degradation of land and of fragile ecosystems. Overgrazing is the major cause of desertification worldwide. Other factors that cause desertification include urbanization, climate change, overdrafting of groundwater, deforestation, natural disasters and tillage practices in agriculture that place soils more vulnerable to wind. Causes of desertification … The reasons for desertification in the Sahel are: • Human - Large population increases in recent years – has lead to overgrazing of the land to meet higher food requirement. Desertification can be measured by the loss of ecosystem productivity it causes, and ranges from slight to severe. What are the 3 main causes of desertification? According to the Government’s data recently presented to the United Nations Convention to Combat Desertification (UNCCD), India lost 31%, or 5.65 million hectares, of grassland area in a decade GeoLiteracy . Desertification is the process by which fertile land becomes a desert due to natural or human-made causes. This puts the natural world and wildlife at an even greater risk. In areas of low precipitation, like Sub-Saharan Africa, long droughts that turn arid land to unproductive, barren soil … Desertification is not directly related to desert. Photo credit: Ocean World Map of the Sahel in North Africa. Deforestation. Human causes of desertification include overgrazing, the buildup of salt in irrigated soils, and topsoil erosion. The process of rock breaking down in situ. The lack of plants can cause changes to the land. But the major causes behind it are often variations in climate and intrusive man-made activities. Desertification is caused by a number of different issues. Home to a third of the human population in 2000, drylands occupy nearly half of Earths land area. Various causes of desertification are deforestation which further leading to soil erosion and decreasing the quality of the soil. This lesson contains adaptations for diverse learners (ELLs). In general, desertification is caused by variations in climate and by unsustainable land-management practices in dryland environments. natural events, such as droughts and wildfires, as well as by human activities, such as land mismanagement and global warming. The increased energy requirements have lead to deforestation as more firewood has been needed. CAUSES OF DESERTIFICATION 2 Causes of Desertification Cut one tree, plant two! Other factors that cause desertification include urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that make soils more vulnerable to wind. The former includes factors such as Desertification: Cause and Effect . : Causes and Impacts of Land Degradation and Desertification: Case Study of the Sudan . Develop claim(s) and counterclaims fairly, supplying data and evidence for each while pointing out the strengths and limitations of both claim(s) and counterclaims in a discipline- Desertification, also called ‘desertization’ occurs through a combination of human and natural processes which causes a reduction in productivity of the dryland (a dry region).

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