城市抱团竞争，谁走在最前列？

Core Points - The Longcheng Urban Circle has been officially approved, becoming the 18th national-level urban circle in China and the second in Northeast China [2][34] - The development of urban circles and city clusters is emphasized in national strategic documents, marking a shift towards integrated urban development [3][34] Group 1: Urban Circle Development - The Longcheng Urban Circle includes Changchun, Jilin City, Siping, and Liao Yuan, covering an area of approximately 29,700 square kilometers with a permanent population of about 12.1 million [13][14] - The urban circle aims to enhance resource sharing in transportation, industry, technology, and public services, moving from a "strong provincial capital" model to a "strong urban circle" model [11][15] Group 2: Economic Positioning - In 2024, Changchun's GDP is projected to be 763.2 billion, accounting for 53.1% of Jilin Province's total GDP of 1,436.1 billion [6][7] - Changchun's economic dominance is evident, but local officials acknowledge that it has not yet effectively supported high-quality development across the province [10][11] Group 3: Northeast Urban Competitiveness - The Northeast F4 cities (Shenyang, Dalian, Changchun, and Harbin) play significant roles in national strategies, with each city assigned specific functions [19][30] - Shenyang is designated as a Northeast Asia international center city, while Changchun and Harbin are positioned as important regional centers with a focus on northern openness [20][29] Group 4: National Urban Circle Landscape - The approval of the Longcheng Urban Circle expands the total number of national urban circles to 18, although some regions remain without such designations [34][36] - Major cities like Beijing and Shanghai have yet to finalize their urban circle plans, indicating a complex urban development landscape [37][38]