In light of the dual objectives of the “dual carbon" target and the pursuit of high-quality urban development, the traditionalclosed management approach for urban non-comercial forests falls short in addressing the intricate demands of ecologicalprotection and social services in the contemporary era. Grounded in the ecological priority principle and incorporating theperspective of “Park Cities", this study advocates a novel model of open sharing and fuctional integration of urban non-com.mercial forests, centered on the concept of “forest +”, through case studies and project implementation. By establishing anecological connectivity network and a hierarchical control sytem, the model aims to achieve a dynamic equilibrium betweerecological safeguarding and public engagement. Furthermore, superimposing three-dimensional fmctions, coupled with adapt.able seasonal design, mitigates conflicts arising from land resource limitations and singular fmctional applications. Throughinovating public participation mechanisms, the transition of ecological values into social and economic benefts is facilitatedThis paper ofiers a theoretical fraework to support the coordinated development of carbon sink enhancement, ecological con.servation, and public service advancement within urban non-commercial forests.