Urban scenic forests are increasingly recognized as multifunctional socio-ecological systems that provide both ecological regulation and recreational services. However, a persistent challenge lies in the spatial mismatch between ecological supply and human use. Despite growing attention to ecosystem services, the mechanisms through which ecological potential is translated into perceived social value remain poorly understood, particularly from a spatially explicit perspective. To address this gap, this study investigated the coupling and coordination between perceived biodiversity and landscape attractiveness, with a focus on the spatial processes underlying ecosystem service value realization. Grounded in the ''Two Mountains Theory'' and using the West Lake forested landscape in Hangzhou as a case study, we developed a dual-source spatial framework that integrated perceived biodiversity values derived from the SolVES model with human activity intensity represented by Baidu population heatmap data. A coupling coordination model was then applied to quantify the degree of interaction and coordination between ecological perception and social use, enabling the identification of spatial patterns and transformation dynamics. The results revealed a pronounced spatial association between perceived biodiversity and landscape attractiveness, with high-value areas exhibiting strong overlap and forming a clear core–periphery structure. Within the scenic area of the study site, high-level coupling zones accounted for 38.9% of this area, while well-coordinated zones represented 24.1% of it, indicating a strong alignment between ecological conditions and social perception. In contrast, peripheral areas exhibited substantial ecological potential but low perceived value, suggesting a decoupling between ecological supply and human perception. Furthermore, the mean coordination degree (D=0.351) was considerably lower than the mean coupling degree (C=0.637), indicating that although ecological resources are abundant, their social value has not been fully realized. This imbalance reflected a transitional gap in the conversion from ecological stock to perceived landscape attractiveness and highlighted a systematic spatial mismatch in ecosystem service delivery. These findings pointed to an asymmetric dependence in ecosystem service realization, where social value was unidirectionally dependent on ecological supply, while ecological supply did not inherently lead to social value. Building on this insight, we propose a spatially differentiated management approach that prioritizes the identification of ecological potential alongside the enhancement of cultural and experiential landscape attributes. This study advances a spatially explicit understanding of the pathway linking ecological supply, human perception, and value realization, offering both theoretical contributions and practical implications for optimizing urban ecological space management.