基于MSPA的绿色基础设施网络构建——以南京市为例

摘要：【目的】针对城市建设空间快速扩张、绿色空间逐渐丧失且破碎的问题，探寻优化城市绿色基础设施网络体系的有效方法，为市域尺度绿色基础设施构建提供更为科学的借鉴与参考。【方法】以南京市作为研究对象，运用形态学空间格局分析法（MSPA），在土地类型划分图的基础上，识别南京市现有绿色空间中核心区、边缘、孤岛、连接桥等重要景观类别，通过斑块面积计算和连通性指数评价发掘具有生态潜力的绿色基础设施节点，通过计算各网络中心的最小成本路径生成潜力廊道，最后结合现有核心区、潜力节点、现有廊道、潜在廊道构建未来南京市绿色基础设施网络体系。【结果】构建优化的南京市多层级绿色基础设施网络体系，形成南京市绿色空间发展结构。【结论】MSPA法为城市绿色基础设施构建提供较为客观、科学的方法，为不同城市环境下的城市绿色基础设施建设提供理论依据和实践支撑。

关键词：绿色基础设施；要素识别；MSPA；网络构建

Abstract:【Objective】Aiming at the problems of rapid expansion of urban construction space and the gradual loss and fragmentation of green space, an effective method for optimizing the UGI network system is explored to provide a more scientific city-scale reference for GI construction.【Method】Taking Nanjing as an example, using morphological spatial pattern analysis (MSPA) and land use map, identify important landscape types such as nodes, edges, islands, bridges, etc.. Use area calculation and connectivity index evaluation to explore potential GI nodes, generate potential corridors by calculating the minimum cost path of each nodes, and finally combine existing and potential nodes as well as corridors to build the future GI network system.【Result】Build an optimized multi-level GI network system and a green space development structure of Nanjing.【Conclusion】MSPA provides a more objective and scientific method for UGI construction, and provides theoretical basis and practical support for the UGI construction in different urban environments.

Keywords: green infrastructure; element recognition; MSPA; network construction