基于MSPA的綠色基礎設施網絡構建——以南京市為例

摘要：【目的】針對城市建設空間快速擴張、綠色空間逐漸喪失且破碎的問題，探尋優化城市綠色基礎設施網絡體系的有效方法，為市域尺度綠色基礎設施構建提供更為科學的借鑒與參考。【方法】以南京市作為研究對象，運用形態學空間格局分析法（MSPA），在土地類型劃分圖的基礎上，識別南京市現有綠色空間中核心區、邊緣、孤島、連接橋等重要景觀類別，通過斑塊面積計算和連通性指數評價發掘具有生態潛力的綠色基礎設施節點，通過計算各網絡中心的最小成本路徑生成潛力廊道，最后結合現有核心區、潛力節點、現有廊道、潛在廊道構建未來南京市綠色基礎設施網絡體系。【結果】構建優化的南京市多層級綠色基礎設施網絡體系，形成南京市綠色空間發展結構。【結論】MSPA法為城市綠色基礎設施構建提供較為客觀、科學的方法，為不同城市環境下的城市綠色基礎設施建設提供理論依據和實踐支撐。

關鍵詞：綠色基礎設施；要素識別；MSPA；網絡構建

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