1.关于沙漠的英语作文.

There are vast areas of land on every continent where there is no rainfall or vegetation. It is estimated that more than 40 per cent of the land on the earth's surface is desert or desert-like. What is worse, these deserts are spreading at a surprising rate every year. If this trend continues, sand will bury almost everything in the near future. Two reasons account for the fact that deserts are spreading. The first reason comes from nature. These areas are usually located in the far inner land where rainfall can never reach. The second reason comes from man himself. Many people regard immediate profit as a supreme value, which results in over-grazing, poor farming, tree cutting, and strip mining. All these activities leave land unprotected. Consequently, rain water washes away topsoil into rivers and oceans, wind blows away loose soil. The expansion of deserts must be stopped if we are to survive on this planet. Man can make deserts, he can also prevent them from spreading. Stopping over grazing, poor farming, tree cutting, and strip-mining is the first step. Planting a green belt of trees along the edge of deserts is the second step. Covering the deserts with vegetation is another step. We hope man can make great efforts to develop better ways to bring the spreading deserts under control.本文来自： /gaokaoyingyu/20070407/3787.html。

2.【关于撒哈拉沙漠的英语作文】

The desert surface is covered by a thick layer of fine sand-like sand (it has been to the seaside »and the beach is the same.'s Just a different reason, the water is a long-term, and the other is the wind Long-term role.) Desert is a peaceful land, the desert surface will change and movement of their own, of course, is the role of the wind. Because the sand will run with the wind. Layers of sand dunes will move over and change into different forms. Temperature difference between the desert areas, the average annual temperature up to 30-50 ℃， the temperature difference greater, summer afternoon, the ground temperature can reach more than 60 ℃， if the beach Limai an egg and soon the Shaoshu. The night temperature also dropped to below 10 ℃. As the temperature difference between day and night, is conducive to the storage of sugar, so the desert oasis of fruits are particularly sweet. Desert wind and sand, and strong winds. - Largest wind up 10-12. Strong wind over the large number of Fusha, a ferocious wind and sand flow, constantly blowing pitting the ground so that the landscape changes dramatically. Value to people's vigilance is that some form of the desert is not natural, but man-made causes. Such as the United States between 1908-1938 due to 900 million mu of deforestation, the destruction of vast grassland, with the result that large green space into a desert. The Soviet Union in 1954-1963, the movement of Reclamation, the Central Asian steppe was severely damaged, has not been cultivated land, the desert has brought disaster. Sub great harm to human beings, it engulfing farmland, villages, buried railways, highways and other transportation facilities. According to historical records, China on the Silk Road Loulan city, is engulfed by the desert. Now, mankind is doing everything possible to prevent desertification, such as afforestation, planting grass sand, set up sand barrier and so have received a very good results.。