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建立人际资源圈Water_Dams
2013-11-13 来源: 类别: 更多范文
Water Dams
Water Dams
Most dams are designed to accomplish a variety of functions, which include flood control, flat water recreation, hydropower electricity generation, and water supply. Although these seem like good reasons for the existence of dams, this type of constructions bring greater negative effects than good ones. The environment effects of dams include loss of land and biological resources to inundation, reservoir sedimentation and downstream erosion, and hydrological changes unfavorable to many native or desirable species. Dams just strangle rivers and the perfect example of the damage dams cause to rivers is what is happening to the Mekong River in Asia.
The Mekong river covers more than 4500 kilometers through 6 countries. It crosses through the Chinis providence of Yunnan, borders Birmania, It divides Thailand and Laos, cuts through Cambodia, passes through South Vietnam, and finally ends in the China Ocean. The Mekong sustains 100 million people, who not only depend on this river for their alimentation or water, but also for irrigation, and for traveling, and sometimes just for recreation. The Thailandese people call it the Mother of rivers.
Today like many rivers in the world, the Mekong is in danger. The reason is the massive and not well planned construction of
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