都市圈同城化的底层逻辑：人口、产业、城镇、交通一体规划

Core Insights - The integrated planning focuses on both transportation and urban development, aiming to attract people and industries [1][5] - The core of regional planning is to coordinate three geographical variables (economic, cultural, and natural) and one changing variable (transportation) [1] - The study of industrial organization emphasizes the integration of industrial chains, supply chains, and innovation chains, with specific spatial patterns identified [1] Industrial Organization - Research indicates that innovation chains typically cluster within a 5-kilometer radius, industrial chains within 50 kilometers, and supply chains within 120 kilometers [1] - Different industries exhibit varying clustering characteristics, with emerging industries having shorter supply chains [1] Transportation Links - The National Development and Reform Commission defines urban agglomerations by a one-hour commuting radius, but this may not fully encapsulate the urban agglomeration concept [2] - Future urban planning should optimize multi-center and multi-hub systems, focusing on point-to-point connectivity rather than just travel time on rail [2] Urban Integration - Urban agglomeration planning should consider a "destination upon arrival" approach, segmenting cities into functional blocks with their own hubs [4] - Key nodes like the Hongqiao hub should serve both transportation and urban functions, becoming critical regional interfaces [4] Human-Centric Approach - The shift from "production-city-people" to "people-city-production" highlights the importance of attracting youth and addressing their needs for livability, employment, and entertainment [5] - Urban planning must integrate population, industry, urbanization, and transportation, moving away from isolated planning approaches [5] Overall Urban Development Logic - The foundational logic for urban agglomeration development includes creating multi-center cities to enhance resource allocation and integrate into urban agglomeration patterns [6] - Establishing functional regional nodes is essential for promoting an efficient and equitable urban structure, driving key areas of attraction [6]