基于MSPA的綠色基礎(chǔ)設(shè)施網(wǎng)絡(luò)構(gòu)建——以南京市為例

摘要：【目的】針對城市建設(shè)空間快速擴張、綠色空間逐漸喪失且破碎的問題，探尋優(yōu)化城市綠色基礎(chǔ)設(shè)施網(wǎng)絡(luò)體系的有效方法，為市域尺度綠色基礎(chǔ)設(shè)施構(gòu)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(tài)學空間格局分析法（MSPA），在土地類型劃分圖的基礎(chǔ)上，識別南京市現(xiàn)有綠色空間中核心區(qū)、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(shù)評價發(fā)掘具有生態(tài)潛力的綠色基礎(chǔ)設(shè)施節(jié)點，通過計算各網(wǎng)絡(luò)中心的最小成本路徑生成潛力廊道，最后結(jié)合現(xiàn)有核心區(qū)、潛力節(jié)點、現(xiàn)有廊道、潛在廊道構(gòu)建未來南京市綠色基礎(chǔ)設(shè)施網(wǎng)絡(luò)體系。【結(jié)果】構(gòu)建優(yōu)化的南京市多層級綠色基礎(chǔ)設(shè)施網(wǎng)絡(luò)體系，形成南京市綠色空間發(fā)展結(jié)構(gòu)。【結(jié)論】MSPA法為城市綠色基礎(chǔ)設(shè)施構(gòu)建提供較為客觀、科學的方法，為不同城市環(huán)境下的城市綠色基礎(chǔ)設(shè)施建設(shè)提供理論依據(jù)和實踐支撐。

關(guān)鍵詞：綠色基礎(chǔ)設(shè)施；要素識別；MSPA；網(wǎng)絡(luò)構(gòu)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