‘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.

Desertification, an extreme form of land degradation, is a global phenomenon that is influenced by and has an impact on climate change and biodiversity loss. Land degradation causes a decline in land productivity and is therefore likely to lead to increased levels of poverty.

A warming climate can cause seawater to expand and ice over land to melt, both of which can cause a rise in sea level. Storm surge on a Louisiana highway shows the effects of rising sea levels. The second mechanism is the melting of ice over land, which then adds water to the ocean.

degradation of the vegetal covering, through to its total disappearance; dispersion of solid particles in the atmosphere – sand storms, air pollution – with a negative impact on man’s health and productive activities; reduction of farming and breeding production: malnutrition and hunger; migrations of people and wars.

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.

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.

As the population in desert areas increases, there is a greater need for fuel wood. When the land is cleared of trees, the roots of the trees no longer hold the soil together so it is more vulnerable to soil erosion . Overgrazing – an increasing population results in larger desert areas being farmed.

Preventive actions include:

1. Integrating land and water management to protect soils from erosion, salinization, and other forms of degradation.
2. Protecting the vegetative cover, which can be a major instrument for soil conservation against wind and water erosion.

Holistic Planned Grazing, or Management Intensive Grazing (MiG), gives rise to a planned grazing strategy that has been proven to reverse desertification. This practice has worked in many arid and semi-arid regions of world where desertification has occurred.

Answer Expert Verified. Answer: Planting a tree belt. Explanation: The most effective method by which the desertification of the soil can be controlled is by planting more and more trees.

Desertification is the persistent degradation of dryland ecosystems. It affects the livelihoods of millions of people.

Main conclusions of the review include: drought and desertification continue to threaten the livelihoods of millions of people in Africa. This trend is set to worsen with the onset of climate change, to which many countries in the region are most vulnerable.

Droughts are a natural disaster that nobody can stop from coming, but we can prepare for the effects of this natural disaster to make it less difficult. There are many human and natural system impacts that this force of nature costs that we should be aware of.

Impacts of climate change are occurring now Nevertheless, the conclusion is that natural systems around the world are being affected by regional climate changes, particularly temperature increases, and that these temperature increases are very likely to be the result of anthropogenic emissions of greenhouse gases.

A conclusion is the last part of something, its end or result. The phrase in conclusion means “finally, to sum up,” and is used to introduce some final comments at the end of a speech or piece of writing.

General

1. Check your well pump periodically.
2. Plant native and/or drought-tolerant grasses, ground covers, shrubs, and trees, or small plants.
3. Install irrigation devices that are the most water efficient for each use, such as micro and drip irrigation, and soaker hoses.
4. Use mulch to retain moisture in the soil.

When rainfall is less than normal for a period of weeks to years, streamflows decline, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If dry weather persists and water-supply problems develop, the dry period can become a drought.

Forests can soak up excess rainwater, preventing run-offs and damage from flooding. By releasing water in the dry season, forests can also help provide clean water and mitigate the effects of droughts.

Droughts occur when an abnormally long dry period uses up available water resources. Floods happen when watercourses or rain swallow up land that is usually uncovered. These natural disasters are often made worse by human action. As it builds up on the surface, the water ends up causing widespread damage.

A drought is caused by drier than normal conditions that can eventually lead to water supply problems. Really hot temperatures can make a drought worse by evaporating moisture from the soil. A drought is a prolonged period with less-than-average amounts of rain or snow in a particular region.

Floods and droughts have the potential for immense destruction of homes, crops, wildlife and infrastructures. Since 2017, water crises and extreme weather events have been consistently identified in the World Economic Forum’s top five global risks by impact.

Flooding can also provide many benefits, including recharging groundwater, increasing fish production, creating wildlife habitat, recharging wetlands, constructing floodplains, and rejuvenating soil fertility (Poff 2002).

Drought affects soil processes in several ways, notably by directly stressing soil organisms—soil microorganisms rapidly equilibrate to the osmotic conditions (water potential) of their immediate environment—and to remain hydrated when the soil around them dries, they must accumulate solutes to retain water within.

Examples of drought impacts on society include anxiety or depression about economic losses, conflicts when there is not enough water, reduced incomes, fewer recreational activities, higher incidents of heat stroke, and even loss of human life. Drought conditions can also provide a substantial increase in wildfire risk.

Here are the 5 natural and human causes of drought:

• 1) Land and water temperatures cause drought.
• 2) Air circulation and weather patterns also cause drought.
• 3) Soil moisture levels also contribute to drought.
• 4) Drought can also be a supply and demand of water issue.