城市蔓延的多维度思考

发布时间：2018-11-02 16:16

【摘要】：半个多世纪以来,城市蔓延引起了广泛关注,取得了显著的研究进展,但也存在一些不足。本文就城市蔓延的内涵界定、测度方法、动力机制及中国大城市空间扩张的特殊性进行讨论与辨析,认为:城市蔓延是指那种盲目而无计划的、分散而非连续性的、用地功能单一且低密度的、过度依赖机动化出行且导致人地关系日趋紧张的不可持续的城市空间扩展模式;具有复杂性、阶段性、区域性、相对性等特点;是经济因素、制度因素、政策因素、技术因素、规划因素、社会因素、文化心理因素或行为因素等综合作用的结果;城市蔓延是过度郊区化的表征,是与特定的时空条件相联系的,需要从中心城区与郊区互动演进的视角来考察;中国大城市的交通拥堵和空气污染问题正在从城市中心向郊区扩展,新一轮城市规划必须对此给予足够的重视。
[Abstract]:For more than half a century, urban sprawl has attracted wide attention and made remarkable progress, but it also has some shortcomings. This paper discusses and discriminates the connotation of urban sprawl, measurement methods, dynamic mechanism and the particularity of the spatial expansion of large cities in China. It is concluded that urban sprawl refers to the blind and unplanned, scattered but not continuous, urban sprawl. An unsustainable urban spatial expansion model with single and low-density land use function, excessive reliance on motorized travel and increasing tension between man and land; It has the characteristics of complexity, stage, region and relativity, which is the result of the comprehensive action of economic factors, institutional factors, policy factors, technical factors, planning factors, social factors, cultural psychological factors or behavioral factors. Urban sprawl is a representation of suburbanization, which is related to specific space-time conditions, and needs to be examined from the perspective of the interactive evolution between central urban and suburban areas. Traffic congestion and air pollution in China's big cities are expanding from urban centers to suburbs, and the new round of urban planning must pay enough attention.
【作者单位】：同济大学测绘与地理信息学院;苏州科技大学环境科学与工程学院;
【基金】：上海市规划和国土资源管理局资助项目(2015(D)-002(F)-11)
【分类号】：F299.2

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