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Dust storms can contribute to certain respiratory disorders such as pneumonia, skin irritations, asthma and many more. [26] They can pollute open water, reduce the effectiveness of clean energy efforts, and halt most forms of transportation. Dust and sand storms can have a negative effect on the climate which can make desertification worse.
It can also be caused by immobile, travel restricted populations of native or non-native wild animals. Overgrazing reduces the usefulness, productivity and biodiversity of the land and is one cause of desertification and erosion. Overgrazing is also seen as a cause of the spread of invasive species of non-native plants and of weeds.
All of these causes have contributed to the degradation of fertile soil, posing a serious threat to the livelihoods of millions of Africans who rely on the land for subsistence. In the Sahel, desertification is mostly attributed to wind erosion. [24] To put it simply, wind erosion is the phenomenon when a strong wind removes a field's topsoil.
Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by their geographical location. [1] Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks, which consequently break in pieces. Although ...
More than 75 percent of the globe became permanently drier over the past three decades, according to a report from the United Nations Convention to Combat Desertification (UNCCD). The report ...
Some climate change effects: wildfire caused by heat and dryness, bleached coral caused by ocean acidification and heating, environmental migration caused by desertification, and coastal flooding caused by storms and sea level rise. Effects of climate change are well documented and growing for Earth's natural environment and human societies. Changes to the climate system include an overall ...
Desertification can be viewed as a process in which the productivity of arid or semi-arid land decreases by 10% or more. [41] Mild desertification signifies a 10 to 25% reduction in productivity, while serious desertification indicates a 25 to 50% decline, and severe desertification denotes a productivity drop exceeding 50%.
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