论“反规划”Negative Planning and Ecological Infrastructure 俞孔坚 Kongjian Yu北京大学景观规设计学研究院Graduate School of Landscape Architecture, PKU 1．边缘上的中国:问题与挑战Challenges (1)中国城市化与城市扩张呈燎原之上势,传统城市扩张模式和规划编制方法已显诸多弊端,城市扩展前景和生态安全忧患期待具有战略眼光的城市决策者.如同市政基础设施，城市的生态基础设施是城市及其居民持续获得自然生态服务的保障。The rapid urbanization, and the problem of thetraditional approach to urban development;A call for ecological infrastructure to provide nature’s services Beijing1984 Beijing2001 Beijing Shanghai New York Hong Kong (2). 一个“新帝国”的时代，一个挥霍的时代: 城市化妆肆无忌惮 CCTV Tower by R. Koolhaas The Century Avenue in Shanghai, By French Architect The National Stadium,by Swiss architect National Theater by Andreu （3）人口重负环境可持续前景堪忧 2、传统规划方法的反思 The background of traditional approach传统的城市规划总是先预测近中远期的城市人口规模，然后根据国家人均用地指标确定用地规模，再依此编制土地利用规划和不同功能区的空间布局 传统城市规划方法已显诸多弊端 Methodology problem caused unwise urban form