Research on the Construction of Urban Composite Green Space Ecological Network Based on Diverse Objectives: A Case Study of the Central Urban Area of Quanzhou

The construction of an urban composite green-space ecological network guided by diverse objectives plays an important role in addressing the negative impacts caused by rapid urbanisation, enhancing the regional ecosystem service capacity and supporting diverse functions such as recreation and cultural activities. This study takes the central urban area of Quanzhou as an example and applies morphological spatial pattern analysis (MSPA), the InVEST model, the minimum cumulative resistance (MCR) model, and the gravity model to identify ecological, recreational, and cultural sources, and to construct a multi-type network, identifying nodes, and suggesting methods and optimisation strategies for developing a composite green-space ecological network for the city that is guided by diverse objectives. A few of the key results of the study are listed below: (1) The central urban area of Quanzhou contains 20 ecological sources; 38 ecological corridors have been constructed; and 19 ecological pinch points, 27 barriers, 10 stepping stones, and 132 breakpoints were identified. (2) 28 recreation sources were identified, and 60 recreation corridors have been constructed. (3) A total of 167 cultural sources and 7 cultural development areas were identified, and 4 major cultural corridors have been formed. (4) A total of 112 composite nodes and 144 composite corridors have been constructed. (5) Optimisation strategies were proposed for the protection and construction of nodes, the creation of corridor carriers and the coordinated development of urban ecology and cultural tourism spaces, to further enhance the comprehensive benefits of an urban composite green-space ecological network. The study's results can provide references for the construction of an urban composite green-space ecological network.