由于全世界人口数量的增长，需水量也随之而急剧增长，增加了水资源压力，这就必须以现实的方法来管理水资源，以最低成本取得最大的效益。兴建水坝是合理解决以上问题的重要措施。介绍兴建水坝的利弊、全世界各地建坝以开发水电能源以及解决水资源管理问题的概况。 Owing to the increase of the world’s population, the water demand will increase rapidly and increase the pressure on water resources. Therefore, water resources must be managed in a realistic way and the maximum benefit should be obtained at the lowest cost. The dam construction is an important measure to solve the above problems reasonably. Describe the pros and cons of dam construction, dam construction around the world to develop hydropower energy and solve water resource management issues.