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desertification, also called desertization, the process by which natural or human causes reduce the biological productivity of drylands (arid and semiarid lands).Desertification, the spread of desertlike conditions as a result of a combination of climatic fluctuations and human impacts, is a form of land degradation that occurs in and around the world’s drylands.The Sahel is one part of Africa that is experiencing severe problems with desertification, the process of the desert expanding into areas that had formerly been farmland. As the land is overused, the soil becomes poor and powdery.
What is it called when deserts spread?
Desertification, the spread of desertlike conditions as a result of a combination of climatic fluctuations and human impacts, is a form of land degradation that occurs in and around the world’s drylands.
What is the process of the desert expanding into areas that had formerly been farmland?
The Sahel is one part of Africa that is experiencing severe problems with desertification, the process of the desert expanding into areas that had formerly been farmland. As the land is overused, the soil becomes poor and powdery.
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What is called desertification?
The United Nations’ official definition says desertification is land degradation in typically dry areas resulting from various factors, including climatic variations and human activities.
What is drought and desertification?
Drought and its impacts can be exacerbated by human activities that are not adapted to the local climate and/or soil type. Land degradation is the process of turning fertile land into less or non-productive land. In extreme cases, in drylands, this is called desertification.
What is soil erosion and desertification?
Desertification is the gradual transformation of habitable land into desert. Soil degradation is a global process. It involves both the physical loss (erosion) and the reduction in quality of topsoil associated with nutrient decline and contamination.
What is another word for desert expansion?
What is the other word used to indicate expansion of deserts ? Desertification.
What is desertification in geography?
Desertification is defined as land degradation in arid, semiarid, and dry subhumid areas resulting from temporary climatic crises, especially droughts that occur periodically, and harmful human activities in vulnerable ecosystems.
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Desertification – Wikipedia
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 – Students | Britannica Kids | Homework Help
The spread or encroachment of a desert environment into a nondesert region is a process known as desertification. This process results from a number of factors, …
Desertification — Special Report on Climate Change and Land
Desertification is land degradation in arid, semi-arid, and dry sub-humid areas, collectively known as drylands, resulting from many factors, …
Desert Soils
Desertification is the spreading of the deserts into areas that were not previously desert, is caused by several different things.
How is desertification formed?
The UN has defined desertification as a “diminution or destruction of the biological potential of the land which can lead ultimately to desert-like conditions.” Desertification can occur when extended periods of drought in arid, semi-arid, or dry sub-humid areas — known as drylands — sap the land’s productivity until …
What is desert encroachment?
Desert encroachment as a degradation of land in arid, semi-arid and sub-humid dry areas caused mainly by climatic changes and human activities; In Nigeria, the dry land parts of the country are more prone to desertification.
Which term refers to the loss of fertile soil from drying out?
Explanation: A desertification refers to the term which means desertlike conditions in a region. This region exhibit lack of water. Loss of fertile soil from drying out is desertification.
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What is meant by desert and desertification?
Wind and dry conditions in deserts create dust that can affect regions far removed from a desert. Desertification—the degradation of productive land to desert—is an environmental crisis that is affecting the land where an estimated 100–200 million people live.
What is drought and desertification Class 8?
Answer: Desertification is a process of degradation of the land. Desertification is the degradation process by which a fertile land changes itself into a desert by losing its flora and fauna, this can be caused by drought, deforestation, climate change, human activities, or improper agriculture.
What is drought geography?
Encyclopedic Entry Vocabulary. A drought is a period of time when an area or region experiences below-normal precipitation. The lack of adequate precipitation, either rain or snow, can cause reduced soil moisture or groundwater, diminished stream flow, crop damage, and a general water shortage.
What is desertification Mcq?
Solution(By Examveda Team)
Desertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
What term is defined as the process during which desert like conditions spread into semiarid areas?
desertification, also called desertization, the process by which natural or human causes reduce the biological productivity of drylands (arid and semiarid lands).
What soil erosion means?
Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate. Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide.
What is gully erosion?
Gully erosion is the removal of soil along drainage lines by surface water runoff. Unless steps are taken to stabilise the disturbance, gullies will continue to move by headward erosion or by slumping of the side walls. It’s far easier and more economical to do repair work in the early stages of newly formed gullies.
What is desertification How are nomads and droughts related to this process?
In some areas, nomads moving to less arid areas disrupt the local ecosystem and increase the rate of erosion of the land. Nomads are trying to escape the desert, but because of their land-use practices, they are bringing the desert with them. It is a misconception that droughts cause desertification.
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What is desertification and its causes?
Desertification is the degradation process by which a fertile land changes itself into a desert by losing its flora and fauna, this can be caused by drought, deforestation, climate change, human activities or improper agriculture. Desertification is a process of degradation of the land.
What are the reasons for arid climate condition in the Thar desert What are the steps taken by the government to overcome the problem of water scarcity?
The Government is focusing and creating awareness on rain water conservation and promoting ground water recharge by reviving old water structures. This plan is called Mukhya Mantri Jal Swavlamban Abhiyan. This Abhiyan is an effective implementation of water harvesting in Thar desert.
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