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Imagine a desert world…
General Information on Desertification
Desertification is the breaking down of land by erosion. It occurs most often in dry areas, where an area has been greatly affected by human activity or climate change (or both). The fresh water supply and the soil can be easily destroyed, and if the land is degraded, the drylands will not be able to renew the water and soil resources and become a desert. Due to the loss of plants and trees by human activity, erosion also destroys most of the topsoil of the dry land, disabling any vegetation, leading to starvation and loss of biodiversity in the area.
What Causes Desertification?
The main causes of desertification are overgrazing of livestock, over-cultivation of crops, deforestation, the increasing number of fires each year, over-use of groundwater, increased amount of salt in the soil, and climate change. Overgrazing and fires cause damage to plants in the drylands, destroying the biodiversity of the drylands. Over-cultivation and increased salinity can lead to the destruction of topsoil which is important for growing crops. In vegetated areas, the land is often cooler than the rest of the dry land and prevents the dry land winds from eroding the topsoil. Climate change and drought can cause a reduction in fresh water, which will prevent plants from growing.
All these processes involve overpopulation of the dry lands. Where there are more people, the drylands will be destroyed.
What is being done to prevent desertification?
To prevent desertification, we must look at what causes desertification. There is no other way to eliminate the effect of overgrazing or over-cultivating the land except by not using the land. This is not a smart way to prevent desertification, as humans need the food and other resources that come from the drylands. However, to stop the erosion, there have been some tree belts, strings of trees that prevent wind from blowing away the topsoil in the drylands. In the northeast of China, there will be a “Green Wall of China” that is grown. It is a wall of trees that is almost as long as the Great Wall of China. In order to lose fresh water, humans should use the idea of sustainable resources so that water can be saved. Also, in some areas, leguminous plants have been used to extract nitrogen from the atmosphere into the soil to restore soil fertility. Also, to fight against deforestation, people have been using the heat as an advantage with solar cooking instead of using wood as fuel.
How Has Desertification Affected Us?
A desert is like a monster, it eats up the land it passes through. It is worse than a hurricane, an earthquake, or a fire. Once it is somewhere, it is very difficult to get that place back, because it makes plants difficult to grow there by destroying the soil and things cannot live there because there is no water. Desert as a disease of the lands. In China, desertification is spreading very quickly. China’s increasingly high population rate is causing much of its land to die. The desert and the storms will cause $50 billion to China’s economy. (Bill Gates only has $60 billion – just a random thought) The dust storms caused by the desert will destroy much of the country’s agriculture. Isn’t this bad enough? Also, in the United States in the 1930s, there was the Dust Bowl in the Great Plains, causing many people to abandon their homes. The people caused the Dust Bowl by not farming correctly and there was also a drought then. In the Sahelian kingdoms in Africa, desertification and drought caused the death of over 100,000 people. Every day, people die because of poverty and hunger, but have you thought about what causes all this? The poor quality of the land and the lack of water are what cause these deaths. If desertification were stopped, there would be no poverty.
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