Tuesday, May 16, 2006

The Desertification

Do you know what is the “Desertification”? Its definition is the process by which useful land, especially farmland, changes into desert. The causes are farming and graze animals and other human’s behaviors. Anyway, the biggest cause is Increasing population. There are deserts along the Tropic of Cancer and the Tropic of Capricorn. Some deserts are formed by sand. But mostly they are formed by rocks and gravel. Deserts cover 12 percents of the earth land. The biggest desert in the world is The Sahara desert, for example.
How does the Desertification spread the world? For example, farmers cut forests (This is called the Deforestation.) and many graze animals eat meadow. So, there will be less trees and grass in that place. Besides, Rain wash away and wind blow away the soil. It is called erosion as you know. So there will be less fertile land. As a result of that process, desert will increase.
It causes a lot of bad influences. For example, it destroys ecosystem in the forests. And droughts will cause. In 1968~73, There was a really big drought in Southern part of the Sahara desert in Africa. More than 100,000 people in that area starved. I think that if desertification advances in this pace, lack of forests and lack of foods will be more serious issues. It will be hard to survive for people in the world in the future.
What should we do to protect the world from the Desertification? There is some actions to do so. For example, Green the deserts that plant trees in deserts by NGO, some companies, government. Make irrigation system by NGO or ODA. I think there is something that we can do soon. We shouldn’t do waste of paper and we should do recycle waste papers. And I think we can also do a campaign to raise funds. I will try to do something to sustain Greens.  
           

1 comment:

Megumi said...

My theme(Dininution in biodiversity) also have been caused by deforestation.We have to keep trees!