可持续发展视角下以生态空间需求为导向的城市更新方法研究: 以苏州市吴江区为例

提升城市生态系统韧性是推动城市高质量与可持续发展的重要基础，城市更新作为协调生态保护与功能提升的关键手段，亟须系统性的方法指导。研究构建了一个基于“生态—空间—需求”统筹的城市更新框架，探索生态资源保护、城市功能空间优化和居民需求之间的耦合路径。具体实施可分为3个阶段：（1）通过生态网络模拟提取生态廊道，修复快速城镇化造成的生态割裂，提升城市生态韧性以支撑可持续发展；（2）基于多源数据对城市空间环境状况和设施分布进行评估，结合人口密度和年龄结构分析，精准识别城市更新的潜在需求；（3）叠加城市生态网络与更新需求，制定针对性更新策略以推动城市生态系统和功能空间的协同发展。以苏州市吴江区为例，对框架进行应用验证，结果表明松陵镇和盛泽镇中心区域及汾湖、元荡、太浦河沿岸地区具有较高的更新需求。基于研究结果提出构建生态迁徙、休闲游憩和低碳慢行廊道的复合型策略，以推动城市功能区向生态宜居的“公园化”空间转型。研究提出的研究框架可为城市更新决策提供系统性的理论参考和数据支撑，促进生态功能与城市空间协同优化，进而增强城市韧性与活力。

Enhancing urban ecosystem resilience is fundamental to high-quality and sustainable urban development. Urban renewal is a crucial tool for balancing ecological conservation with functional improvement, necessitating a systematic methodological framework. This study proposes an integrated "Ecology-Spatial-Needs" framework that identifies optimal pathways for coupling ecological resource protection, functional space optimisation, and residents’ spatial needs. The framework consists of three stages. Firstly, ecological network analysis is used to identify critical ecological corridors, repairing fragmentation caused by rapid urbanisation and strengthening ecosystem resilience as a basis for sustainable development. Secondly, multi-source data evaluation assesses environmental conditions and facility distributions, and identifies renewal needs by incorporating population density and age structure. Thirdly, the analysis of the ecological network is combined with the demand for renewal to formulate targeted renewal strategies that promote the coordinated development of ecological and functional urban spaces. The framework is empirically validated in the Wujiang District, Suzhou. The results indicate that high renewal needs are concentrated in the centre of Songling and Shengze Town and along the ecological patches like Fen Lake, Yuandang Lake, and Taipu River. Based on these findings, the study proposes strategies for constructing ecological migration corridors, recreational greenways, and low-carbon transit corridors to guide the "parkification" of urban functional areas toward ecologically livable spaces. The proposed framework offers systematic theoretical guidance and data-driven support for urban renewal decision-making, promotes coordinated optimisation of ecological functions and urban spaces, and enhances urban resilience and vitality.