What Is The Meaning Of Desertification?

What are examples of desertification?

Additional savannas, grasslands, and woodlands are common indications of desertification in arid and semi-arid areas.

Well-known examples of this occurrence include, Europe’s Adriatic Sea, the Middle-East’s Saharan desert, and China’s Taklamakhan Desert.

Sand dunes are formed in the Sahara Desert in the image above..

How can you prevent erosion?

There are many methods that could be used to help prevent or stop erosion on steep slopes, some of which are listed below.Plant Grass and Shrubs. Grass and shrubs are very effective at stopping soil erosion. … Use Erosion Control Blankets to Add Vegetation to Slopes. … Build Terraces. … Create Diversions to Help Drainage.Oct 17, 2016

How long has desertification existed for?

Desertification became well known in the 1930’s, when parts of the Great Plains in the United States turned into the “Dust Bowl” as a result of drought and poor practices in farming, although the term itself was not used until almost 1950.

What are the steps of desertification?

Key processes related to desertification include drought, primary production and carrying capacity, soil degradation, and use of water resources. The role of social factors is also important.

How does climate change affect desertification?

Climate change may exacerbate desertification through alteration of spatial and temporal patterns in temperature, rainfall, solar radiation and winds. … In Southern Europe, higher temperatures and more frequent drought are expected to reduce water availability, hydropower potential, and, in general, crop productivity.

What are the 3 main causes of desertification?

Overgrazing is the major cause of desertification worldwide. 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.

How can desertification be prevented?

Preventive actions include:Integrating land and water management to protect soils from erosion, salinization, and other forms of degradation.Protecting the vegetative cover, which can be a major instrument for soil conservation against wind and water erosion.More items…

What is desertification short answer?

Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid.

What will happen if desertification continues?

Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. … Some 10 to 20% of drylands are already degraded, and ongoing desertification threatens the world’s poorest populations and the prospects of poverty reduction.

How can we limit the negative impacts of desertification?

Strategies to reduce desertificationPlanting more trees – the roots of trees hold the soil together and help to reduce soil erosion from wind and rain.Improving the quality of the soil – this can be managed by encouraging people to reduce the number of grazing animals they have and grow crops instead.More items…

What is desertification explain?

Desertification refers to the persistent degradation of dryland ecosystems by climatic variations and human activities. … In drylands, water scarcity limits the production of such services provided by ecosystems.

What is desertification in geography?

Desertification is the process of land turning into desert as the quality of the soil declines over time. … The main causes of desertification include: Population growth – the population in some desert areas is increasing.

How can desertification affect humans?

Land degradation and desertification can affect human health through complex pathways. As land is degraded and deserts expand in some places, food production is reduced, water sources dry up and populations are pressured to move to more hospitable areas. … the spread of infectious diseases as populations migrate.

Which is a cause of desertification quizlet?

What causes desertification? Over cultivation, overgrazing, deforestation, slash and burn, climate change. … Climate gets hotter, less rainfall, less water supply, less vegetation grows, soil becomes bare and land is infertile so the land becomes a desert.

Why is preventing desertification important?

In Africa and other countries largely dependant on agricultural production, desertification can reduce agricultural yields and make them much more unpredictable. It therefore affects food security of those living in affected areas.

How is desertification caused?

‘Climatic variations’ and ‘Human activities’ can be regarded as the two main causes of desertification. removal of the natural vegetation cover(by taking too much fuel wood), agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.

Who is affected by desertification?

Africa is the continent most affected by desertification, and one of the most obvious natural borders on the landmass is the southern edge of the Sahara desert. The countries that lie on the edge of the Sahara are among the poorest in the world, and they are subject to periodic droughts that devastate their peoples.

What are the major causes of deforestation?

Direct causes of deforestation are agricultural expansion, wood extraction (e.g., logging or wood harvest for domestic fuel or charcoal), and infrastructure expansion such as road building and urbanization. Rarely is there a single direct cause for deforestation.