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在政治经济学背景下,由于政府力量和市场力量相互交融,城市形态演化遵循一定的周期性演变规律。基于1909~2008年间昆明市历史阶段的形态演化资料,运用参与式照片、R指数及高密度填充指数与低密度扩张指数分析了昆明市城市形态演化的周期性规律。结果表明,从理性的微观过程或个体行为及宏观过程或城市实践来看,城市形态演化包含了最低成本周期扩张模型,即低密度的扩张与高密度的填充;低密度的扩张由政府主导的基础设施建设投资所引导,而高密度的回填运动由集体与理性的个体企业所引发,故城市形态的宏观演化,是它本身的内在法则与外部机制的统一体。这一结果有助于解释更多有关土地使用及土地管理的信息,将帮助我们进行规划未来的城市发展。
Under the background of political economy, due to the integration of government forces and market forces, the evolution of urban morphology follows a certain periodic evolution. Based on the morphological evolution data of Kunming during the period from 1909 to 2008, periodic patterns of urban morphological evolution in Kunming were analyzed using participatory photographs, R index, high density filling index and low density expansion index. The results show that, from the rational micro-process or individual behavior and macro-process or urban practice, the urban form evolution includes the lowest-cost cycle expansion model, that is, low-density expansion and high-density filling; low-density expansion led by the government Infrastructure investment, the high-density backfill movement is triggered by the collective and rational individual enterprises. Therefore, the macroscopic evolution of urban form is the unity of its own internal laws and external mechanisms. This result helps explain more about land use and land management and will help us plan for future urban development.