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城市是一个高度复杂的大系统，城市布局、城市设计是城市交通出行特性的决定因素，而交通系统网络格局构成城市的机理，并决定城市经济的可达性，影响到城市经济与人民生活的所有层面.过去的十年中，能源基金会可持续城市项目与国家相关部委及城市合作，在可持续城市和交通系统规划、建设中做了大量工作.本次论坛主题为“系统科学与可持续城市交通理论与实践”，从可持续城市项目以及昆明可持续城市规划设计、济南快速交通规划与实践、重庆山城步道规划与应用等方面，共同探讨土地使用与城市交通协调发展的可持续城市交通之路.

Systems Science and Theory and Practice of Sustainable Urban Transport

City is a huge system of great complexity. The layout and design of a city significantly impact its traveling characteristics. Meanwhile, the structure of the traffic network forms a city’s fabric which determines the accessibility of urban economy and influences every aspect of city’s economy and people’s lives. During the past decade, the China Sustainable Energy Program of the Energy Foundation (US) cooperated well with some relevant departments and cities of China. They made considerable contributions to the design and construction of sustainable cities and related transport systems. The theme of the 28th conference of “Traffic and Transportation Forum 7+1” is “systems science and theory and practice of sustainable urban transport”. It analyzed a series of project practices, such as the China Sustainable Energy Program, sustainable planning of Kunming city, rapid transit system of Jinan city and the pedestrian path program for the mountain city of Chongqing. Then, it discussed some probable development patterns of sustainable city with full consideration of land use and urban transport.