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Desertification
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Desertification
Today, the best example of desertification is in the Sahel region in Africa. This zone is
located between the Saharan Zone north and Sudanian Zone south and covers parts of Senegal,
Mauritania, Mali, Burkina Faso, Niger, Nigeria, Chad, and Sudan. The Sahel region, including
most of the countries in the African continent, is undergoing environmental changes that are
leading to its desertification through natural and human-instigated changes.
The leading causes of desertification in the Sahel include climatic variation and man
interference. Climatically, the area has recently been receiving long spells of dry weather, and
precipitation has become irregular. Less precipitation is received, and in combination with high
evaporation rates associated with high temperatures, this results in a moisture deficit in the soil.
That way, as the soil's moisture content diminishes, its structure weakens and becomes more
accessible to erode (Abbass et al., 2022). In the Sahelian region, wind erosion is quite common,
leading to stripping the first layer of soil and loss of fertility and vegetation cover.
Human activities further intensify the climatic stresses. Topsoil is deposited through
livestock overgrazing, deforestation of firewood, and other poor agricultural practices. As
vegetation cover is removed, the soil is left open for erosive forces of the environment to exert
their effects. The felling of trees and shrubs, which help to slow down wind speed and also help
conserve water, also exasperates the situation (Abbass et al., 2022). Further, soil compaction by
livestock and agricultural machinery diminishes its water retention capacity, thus enhancing run-
offs and more soil erosion.
These processes show delicate equilibriums between climatic factors and human sort to
keep the land healthy. This is evidenced by the desertification in the Sahel region, which shows
how delicate this balance is; thus, there is a need to adopt and implement sustainable land
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management practices that could help reverse the effects of desertification. This problem is a
complex one that needs both scientific analysis and work with people in order to bring back the
formerly damaged ecosystems in the region.
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References
Abbass, K., Qasim, M. Z., Song, H., Murshed, M., Mahmood, H., & Younis, I. (2022). A
Review of the Global Climate Change impacts, adaptation, and Sustainable Mitigation
Measures. Environmental Science and Pollution Research, 29(1), 42539–42559.
Springer. https://doi.org/10.1007/s11356-022-19718-6
