What is the main cause of desertification. Desertification in Africa (Google / Edennis) 2019-01-11

What Causes Desertification?

Placement ofstraw grids, each up to a square meter in area, will also decrease the surfacewind velocity. Camels and other animals trample the soil in the semiarid Sahel of Africa as theymove to water holes such as this one in Chad photograph courtesy of the U. Polluted sources of drinking water Vegetation plays an important role in cleaning our water. However, removing international trade barriers without regulation at national level may also encourage agricultural practices. All these factors weaken still further the economies of developing countries affected by desertification, particularly those countries that have no resources other than agriculture and those where almost all the territory is affected. Since the opposite also is true we cannot really afford to let this opportunities slip.

Causes, Effects and Solutions of Desertification

The fraction of precipitation in spring tended to increase whilst the fraction in autumn and winter decreased. Desertification affects topsoil, groundwater reserves, surface runoff, human, animal and plant populations. Through the use of unsustainable irrigation techniques, salt can also build up in the soil, rendering the soil useless for growing crops or other plants. These transition zones have very fragile, delicately balanced ecosystems. Though of course there was also a fair bit of admixture as well. Their economies are powerless to break the fatal cycle of poverty that leads them to face up to emergencies by taking on more and more increasingly untenable debt.

Causes, Effects and Solutions of Desertification

The soil the birch forest stood in was typically 6 feet deep. If the rains fail it can cause drought. Some also once provided natural springs, creeks and other water sources. In other words — the four horsemen. In this respect, African countries in arid, semi-arid and dry subhumid zones are particularly prone to desertification and affected by its consequences. They are: a Deforestation in hilly areas; b Excessive mining in hilly areas; c Construction of dams; d Infrastructure; and e Means of transport, especially construction of roads.

Desertification: 4. What are the major causes of desertification?

Small hollows support vegetationthat picks up heat from the hot winds and protects the land from the prevailingwinds. The term salinity is used for such a situation. Or, to put it in another way, desertification results in persistent degradation of dryland and fragile due to man-made activities and variations in climate. Animals will also go hungry, which will cause even more of a food shortage. Desertification is a process of land-degradation by which a region becomes progressively drier and drier — eventually becoming desert. The flow of water continuously goes on doing the eroding work which results in landslides sooner or later. A country´s wealth is built up slowly over a century, but it can be demolished in less than a decade.

Mongolia: Country Features, the Main Causes of Desertification and Remediation Efforts

Desertification is the environmental transformation from savannah grassland into arid desert-like land. When farmers and herders lose control or long-term security over the land they use, the incentives for maintaining environmentally practices are lost, and this can greatly contribute to. But at that epoch the country was unimpaired, and for its mountains it had high arable hills, and in place of the swamps as they are now called, it contained plains full of rich soil; and it had much forest-land in its mountains, of which there are visible signs even to this day; for there are some mountains which now have nothing but food for bees, but they had trees no very long time ago, and the rafters from those felled there to roof the largest buildings are still sound. Migrations and refugees would become less of a problem to neighbouring countries when sustainable agriculture is practised in formerly barren areas. Due to global warming the climate changes,weather becomes warmer,so does the soil.

Desertification

Throughout the 1990s, dryland regions experienced a population growth of 18. The irrigation water may be itself rich in soluble water and add to salinity of soils. Unfortunately, some of them also become extinct for their inability to cope with a sudden change of their environment. The natural recurring drought processes, which may be caused by global climatic changes that are difficult to evaluate, may lead to land degradation, thus endangering the peoples in and around those areas, or preventing future land use. The eruption and its aftermath fires, tsunami, weather changes and famines would have had wide-ranging effects across the Mediterranean, the Levant and particularly Greece, and could have provided the impetus for invasions of other regions of the Mediterranean.

Desertification in Africa: Causes and Effects Essay

Desertification What are the causes of desertification? At the same time, they increase the chance of runoff and raindrop impact. Desertification is now widespread across much of the island, though, the island was at one time mostly forested. And desertification has been, is, and will remain, as a significant driver in the collapse of civilizations. Drylands' precipitation is highly variable through the year and occurs in infrequent, discrete, and largely unpredictable events. This is called rill erosion. Group approval is often the first step in achieving this aim.

Causes and Effects of Desertification

Some of these drivers are simply the result of natural environmental variation and shifts that are the result of larger natural patterns, but many are also simply the direct result of human actions. Excessive ploughing of land may also cause soil erosion. The agricultural sector consists of two main subsector, these are crop production and livestock production. Millions of people in Africa and Asia raise animals on pastures and rangelands that have low carrying capacity because of poor quality or unreliable rainfall Pastoralists and their rangelands are threatened by overgrazing. Drylands that suffer from water scarcity are also very limited in terms of wood and crop production, as well as forage and other ecosystem services.