城市边缘区的人地系统矛盾日益凸显,其复杂的空间演变机制对传统规划范式产生巨大冲击。通过类比分析法和逻辑推理法构建解释和干预城市边缘区空间演进过程的理论框架。首先,阐明城市边缘区生态困境的外因和内因分别来自城乡双向胁迫和空间内生矛盾。其次,基于复杂科学中的扰沌模型理论构建城市边缘区生态适应性演进的“属性—时间—尺度”三维解释框架,提出生态衰退与复杂干扰叠加影响下的规划响应机制。最后,协调底线思维与增长主义发展逻辑,提出城市边缘区的生态适应性规划转型路径,包括生态网络功能培育、关键生态服务优化、土地资源精细配置与跨尺度的规划传导,以期为新时期我国国土空间规划实践提供认识论和方法论支撑。
Urban fringe (UF) is a vulnerable area characterized by the contradiction in human-land system. However, the increasingly complex spatial evolution mechanism of UF has brought great challenges to the traditional planning paradigm. This paper aims to establish the theoretical framework of explaining and intervening the spatial evolution of UF, using analogy analysis and logical reasoning. First, this paper reflects on the external and internal causes of the ecological dilemma in the UF, which are respectively from urban and rural two-way coercion, spatial endogenous contradiction. Second, taking the Panarchy model from complex science as reference, this paper constructs a three-dimensional conceptual framework of “attribute, time and scale” for ecological adaptive evolution of UF, which clarifies the planning response mechanism under the impacts of ecological decline and complex disturbance. Finally, coordinating the development logic of bottom-line thinking and growth doctrine, this paper put forward transformation strategies of ecological adaptive planning of UF, including cultivation of ecological network functions, optimization of key ecological system services, fine allocation of land resources, and cross-scale planning transmission mechanism, so as to provide epistemological and methodological support for the fine management and spatial governance of land in the new era.
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