Deforestation and desertification have many detrimental effects on the environment, but one of the most devastating impacts is the loss of biodiversity. 0 Answers/Comments. Desertification definition is - the process of becoming desert (as from land mismanagement or climate change). We already know that Water is the most important resource on the planet. Land is an essential building block of civilization, it is essential for growing most of the food that the worldâs ever-growing population needs, and yet its contribution to our quality of life is perceived and valued in starkly different and often incompatible ways. See more. Desertification refers to the process of land productivity decline or loss and the formation of desert-like landscapes in arid, semiarid and subhumid arid areas, which is due to adverse climate changes or inordinate human activities (Geist and Lambin, 2004).Land desertification is a key ⦠Food chain is a linear sequence of organisms which starts from producer organisms and ends with decomposer species.Food web is a connection of multiple food chains. Deforestation is a major driver of terrestrial habitat loss and habitat fragmentation and contributes to global warming. And yet if you ever see a river or lake around your city, it would be evident to you that we are facing a very serious problem of Water pollution. In drylands, water scarcity limits the production of such services provided by ecosystems. The Dictionary.com Word Of The Year For 2020 Is …. The presence of a nearby desert has no direct relationship to desertification. Local- to national-scale studies demonstrate the importance and socioecological significance of the process, but land-cover change in dryland ecosystems is poorly documented at the global scale, and its causes are not fully understood (Reynolds and Stafford Smith 2⦠Soil erosion is the removal of the top layer of the soil due to some physical forces. NCERT Solutions Class 8 Science Chapter 7 Conservation of Plants and Animals â Here are all the NCERT solutions for Class 8 Science Chapter 7.This solution contains questions, answers, images, explanations of the complete chapter 7 titled Conservation of Plants and Animals From of Science taught in class 8. “Affect” vs. “Effect”: Use The Correct Word Every Time. Introduction. Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land. Landslide definition, the downward falling or sliding of a mass of soil, detritus, or rock on or from a steep slope. Updated 1/22/2015 11:29:11 AM. It is the essence of all life on earth. All rights reserved. 9.2 Programme mapping 160. Published under the authority of the GreenFacts Scientific Board. Drylands currently cover about 46.2% (±0.8%) of the 7 global land area and are home to 3 billion people. American English is not always as it appears to be ... get to know regional words in this quiz! The 1977 definition described desertification as the diminution or destruction of the biological potential of the land, which could lead ultimately to the formation of desert-like conditions ⦠What are the major causes of desertification? The official definition by the United Nations Convention to Combat Desertification (UNCCD) that has been widely used since itâs formulation in 1994 is: âdesertification is land degradation in arid, semi-arid and dry sub-humid areas resulting from various factors, including climatic fluctuations and human activities.â How can we better understand desertification? 1. This increase is attributed to a combination of human factors (such as population pressure and land use patterns) and climatic factors (such as droughts). Natural hazards are excluded as a cause; however human activities ⦠Desertification does not occur in linear, easily mappable patterns. 6. How to use desertification in a sentence. Is Friday Named After A Goddess With A Chariot Pulled By Cats? Therefore, desertification is one of the greatest environmental challenges today and a major barrier to meeting basic human needs in drylands. Of those gases, known as greenhouse gases, water vapor has the largest effect. Definition of Land Degradation: Land degradation is recognized as the main outcome of desertification. 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 variations and human activities.” Land degradation is in turn defined as the reduction or loss of the biological or economic productivity of drylands. 8.0 Site 112. Dictionary.com Unabridged Copyright © 2011. 5. The actual intensity of the desertification process is a function of socioeconomi⦠One very dramatic type of landslide is a lahar.They happen when a volcano erupts, quickly melting snow and releasing a slide of ash and other material down the volcano's steep slopes. NCERT Solutions for Class 8 Science Chapter 7 Conservation of Plants and Animals Topics and Sub Topics in Class 8 Science Chapter 7 Conservation of Plants and Animals: Section Name Topic Name 7 Conservation of Plants and Animals 7.1 Deforestation and Its Causes 7.2 Consequences of ⦠How are desertification and human well-being linked? This answer has been confirmed as correct and helpful. The UNO Conference on Desertification (1977) has defined desertification as the âdiminution or destruction of the biological potential of ⦠8.1 Desertification in China 112. A. drying out B. turning to sand C. hardening D. to leave Desertification means drying out. Desertification is a widespread process of land degradation in arid, semi- arid, and dry sub-humid areas resulting from various factors, including climatic variations and human activities. Cancer rates and mortality, types and causes, Endocrine disrupting properties of pesticides. It is the spread of arid areas caused by a variety of factors, such as climate change (particularly the current global warming) ⦠2. Question. Greenhouse effect, a warming of Earthâs surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapor, carbon dioxide, methane, and certain other gases in the air. It is caused primarily by human activities and climatic variations. Deforestation, clearing or thinning of forests by humans to make the land available for other uses. While the global and regional interplay of these factors is complex, it is possible to understand it at the local scale.