城市边缘带研究述评:理论演进及其在我国古城更新中的应用路径OACHSSCD

This study aimed to reveal the development process of urban fringe belt theory from its emergence to its introduction into China,analyze existing cases of its application,and summarize its application pathways in the renewal of ancient Chinese cities.The formation of the urban fringe belt theory,as well as its introduction and development in China since the 21st century,was evaluated by combining the discussion on urban morphology by historians and geographers from France and Germany in the late 19th century with relevant literature from the Conzenian school of urban morphology in the 20th century.Recent research presented at the International Seminar on Urban Form(ISUF)was also reviewed to explore the leading research on the urban fringe belt.Differences and commonalities among cities in terms of historical periodization,types of applicable fringe belts,and types of applicable cities were compared by analyzing the application of urban fringe belt theory in nine city research cases.The research revealed that:(1)The urban fringe belt theory possesses universal applicability and has been repeatedly validated in various cities worldwide since its emergence.However,existing studies on the urban fringe belt in China remain concentrated in southern cities,with a notable lack of empirical studies in large northern cities.(2)Urban fringe belts in China often exhibit a"patch-like"pattern,where different land parcels within a fringe belt are not necessarily contiguous.In ancient Chinese cities,these fringe belts are further characterized by"transitionality"and"hybridity".(3)Based on the characteristics of domestic fringe belts,differentiated renewal strategies should be developed according to fringe belt type and city type.The formation of inner,middle,and outer fringe belts bears imprints of distinct historical periods.Inner fringe belts are often associated with early fixation lines,such as city walls and rivers,and can be integrated with landscape belts in the renewal of ancient cities.The formation of middle and outer fringe belts corresponds to urban expansion cycles.In urban renewal,these areas can be integrated with corresponding industrial parks,public institutional industrial heritage sites,and urban green spaces to facilitate coordinated planning of function and form.(4)In industrial cities,the formation of fringe belts is often linked to the rise and decline of industrial clusters.Renewal efforts should prioritize the"alienation"and"transformation"of these fringe belts to foster new commercial vitality and activate spatial value.In historical cities,the formation of fringe belts is often associated with fixation lines such as city walls.Renewal efforts should emphasize the protection and spatial reorganization of these fringe belts to ensure the effective preservation and continuation of urban heritage.The value of the urban fringe belt theory continues to be widely validated and holds significant potential for application in the renewal of ancient Chinese cities.It offers important practical value for maintaining urban fabric continuity and curbing uncontrolled urban sprawl in the preservation and renewal of China's historical cities.These findings provide new perspectives for supplementing and developing urban fringe belt theory and fostering exchanges among different schools of urban morphology.