Urban parks represent one of the most critical components of green infrastructure, playing an indispensable role in fostering sustainable urban development, with their spatial distribution directly influencing the attainment of green equity. As China's urbanization paradigm undergoes a profound transformation, shifting from a phase of rapid expansion to one focused on high-quality development, the imperative to enhance green equity through strategic urban renewal initiatives has emerged as a major demand of modern people-oriented city construction. However, promoting the transition from grey infrastructure to green space in high-density built-up areas involves complex trade-offs. Thus, developing a dedicated analytical framework to effectively guide ecological restoration processes is critical. Based on the basic principles of landscape ecology, this study proposes a spatial layout idea for ecological restoration within the context of urban renewal. This idea is articulated as a sequential, three-stage progression: beginning with "promoting fairness through urban park location selection," subsequently advancing to "connecting urban parks into ecological corridors," and ultimately culminating in "achieving coverage of the entire area with an interconnected network of these corridors." Furthermore, by integrating established theories such as central place theory and ecological network theory, a trade-off framework was developed. To validate the efficacy and applicability of this proposed framework, the central urban area of Guangzhou was selected as a representative case study. The results yielded several key findings: (1) The spatial linkage of ecological patches, progressing from point to line and to area, proved to be a pivotal and essential trade-off framework for the strategic planning of ecological restoration projects within urban renewal contexts; (2) Voronoi polygons generated through the application of central place theory, exhibited a remarkably high degree of consistency with the actual traffic accessibility isochrones. Crucially, the dynamic adjustment and iterative refinement of these polygons enable the rapid and efficient simulation of additional allocation centers for urban parks under a diverse array of spatial equity models; (3) Within the defined constraints of urban renewal units, the strategic addition of urban parks in close proximity to the encrypted Voronoi nodes demonstrably enhanced overall network connectivity, thereby facilitating a more efficient flow of vital ecosystem services. The progression from achieving spatial equity to enhancing network connectivity was a profoundly important and ecologically oriented planning concept. The trade-off analysis framework explored in this study not only exhibits high technical reproducibility and reliability but also offers valuable and actionable reference for planning decisions in the critical domain of ecological city construction.