what is desertification pdf
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Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems The word "desertification" refers to the process by which productive land outside of the desert's natural limits deteriorates and loses its capacity to produce (agricultural crops, pastures desertification changes the absorption and release of associated greenhouse gases (GHGs). Under modern conditions, Desertification is a progressive loss of soil fertility, through the destruction of the structure and composition of the soil, which doesn’t permit good agricultural productions, or the Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities desertification and promoting development are virtually one and the same. We need to correct an image of desertification as an unstoppable monster slowly consuming the ChapterAccessesCitations. Home to a third of the human population in, drylands occupy nearly half of Earth’s land area. Using the ratio of mean annual precipitation to mean annual potential evapo-transpiration, the world is divided into aridity Desertification is a silent, invisible crisis that is destabilizing communities on a global scale. In the past, drylands recovered easily following long droughts and dry periods. As the effects of climate change undermine livelihoods, inter-ethnic clashes are breaking Desertification is caused by climate variability and human activities. Arid ecosystems could be an important global carbon sink, depending on soil water availability (medium evidence What is desertification? Desertification is defined by the United Nations as ‘land degradation in arid, semi-arid and sub-humid areas resulting from various factors The word "desertification" refers to the process by which productive land outside of the desert's natural limits deteriorates and loses its capacity to produce (agricultural crops, Desertification and changing climate are projected to causereductions in crop and livestock productivity (high confidence), modify the composition of plantspecies and As commonly used, the word desertification means an environmental crisis which produces desert-like conditions in any ecosystem; for different media, the mean ing of Desertification is a silent, invisible crisis that is destabilizing communities on a global scale. Vegetation loss and drying of surface cover due to desertification increases the frequency of dust storms (high confidence). As the effects of climate change undermine livelihoods, inter-ethnic clashes are breaking out within and across states and fragile states are turning to militarization Desertification is defined as land degradation in arid, semi-arid regions, resulting from human activities and climatic variations [3], Iraq is considered among the countries affected by this "Desertification is the diminution or destruction of the biological potential of the land, and can lead ultimately to desert-like conditions. What is desertification? It is an aspect Desertification hotspots, as identified by a line invegetation productivity between s and s, extended to about % of drylands (±%),affecting about (±) million people in desertification/land degradation and mitigate the effects of drought. Desertification is defined by the United Nations as ‘land degradation in arid, semi-arid and sub-humid areas resulting from various factors including climatic variations and human activities’. Part of the book series: Springer Series in Physical Environment ((SSPENV,volume 9)) Abstract. ABOUT THIS BOO k This book is intended as a basic information kit that tells “the story” of desertification, land degradation and drought at the global scale, together with a comprehensive set of graphics. The book indicates trends as they As commonly used, the word Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities.
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