关于北京建设立体化城市轨道交通网的思考

On the Vertical Transport Development in Beijing

论述了轨道交通对北京可持续发展、提供低运营成本和发展经济的重要作用，介绍了多样化、立体化轨道交通的地域分布和构架，同时提出了北京在建设轨道交通过程中的问题及其对策。

By dissertating the effect of mass transit to the sustainable development、low-cost handling and economic development of Beijing, the author i ntroduces the geographic distribution and the diversiform configuration of urban mass transit. argues that Beijing shall take effective countermeasure, in the construction of urban mass transit.