Coupling coordination levels.

As an important form of green space within densely built urban environments, optimizing the layout of city parks based on the synergistic integration of carbon stock and recreational services level holds significant importance. Taking Hangzhou Jinsha Lake Park as a case, this research employs remote sensing inversion to analyze the spatial distribution of the park’s carbon stock. A set of indexes was used to evaluate the park’s recreational services level. Finally, a coupling coordination model was applied to generate and visualize the coupling coordination degree between the park’s carbon stock and recreational services level. Results indicate that the coupling coordination degree between recreational services level and carbon stock in Jinsha Lake Park exhibits a distribution pattern characterized by higher values in the west and lower values in the east, as well as higher values in the south and lower values in the north. Most of these coupling coordination degrees fall in the “primary coordination” range and exhibit different spatial characteristics, such as “high recreational level – low carbon stock” and “low recreational level – high carbon stock”. Park road accessibility serves as a fundamental prerequisite for activating spaces. The rational allocation of functional zones provides a structural framework for balancing ecological and recreational interests, while optimized vegetation configuration acts as the core engine that directly drives the simultaneous growth of carbon stock and recreational vitality. Appropriate plant configuration not only directly increases regional carbon stock but also boosts recreational vitality by increasing plant diversity and vegetation coverage. This study proposes a park optimization strategy based on the synergy between carbon stock and recreational functions, which is of great significance for advancing the dual objectives of enhancing ecological services and social services in urban parks.作为高密度建成城市环境中绿地的重要组成形式，基于碳储量与游憩服务水平协同融合优化城市公园布局，具备显著的现实意义。本研究以杭州金沙湖公园为研究案例，通过遥感反演技术分析该公园碳储量的空间分布格局，并构建指标体系对其游憩服务水平开展评估。最终借助耦合协调模型生成并可视化呈现公园碳储量与游憩服务水平间的耦合协调度。研究结果显示，金沙湖公园游憩服务水平与碳储量的耦合协调度整体呈现西高东低、南高北低的分布特征；多数耦合协调度处于“初步协调”区间，且存在“高游憩水平-低碳储量”“低游憩水平-高碳储量”等差异化空间表现。公园道路通达性是激活公园空间的基础前提，功能区的合理配置为平衡生态效益与游憩效益提供了结构性框架，而优化的植被配置则是推动碳储量与游憩活力同步提升的核心动力。适宜的植物配置不仅可直接提升区域碳储量，还可通过增加植物多样性与植被覆盖度，进一步增强公园的游憩活力。本研究提出了基于碳储量与游憩功能协同的公园优化策略，对推进城市公园生态服务与社会服务的双重目标升级具有重要价值。