Abstract:

Background & Aim: As a critical research area under the framework of the Convention on Biological Diversity (CBD), urban green spaces play a key role in maintaining the ecological stability of cities and improving the quality of life of residents. However, the compound pressures of habitat fragmentation, invasive alien species and environmental pollution brought about by large-scale global urban expansion have made the conservation of biodiversity in urban green spaces an urgent issue in global ecological governance. This paper focuses on the biodiversity of urban green spaces under high-intensity human intervention, systematically analyzing its conceptual connotation and research scope. We review advances in monitoring technologies, functional synergies, landscape optimization, and management strategies, while identifying research gaps and future directions. 

Progress: Research indicates that urban green spaces serve as vital infrastructure for enhancing the resilience of ecosystem services, facilitating species migration and dispersal, and improving climate adaptation. Effective biodiversity conservation requires integrated strategies that restore ecological connectivity and optimize multifunctional synergies. However, the current research still faces bottlenecks such as fragmentation of the monitoring technology system, disconnection of cross-scale planning, and lagging governance mechanisms. In the future, it is necessary to build an intelligent monitoring system and a comprehensive database, develop multi-objective synergistic models, promote biodiversity-oriented green space system planning, and innovate a multifaceted governance mechanism. 

Prospects: Through interdisciplinary integration and international cooperation, the conservation of urban green space biodiversity will be deeply embedded in the governance of land space, and the synergistic path of urbanization and biodiversity conservation will be explored, so as to provide a scalable ecological restoration plan for achieving the global 30 by 30 target and provide a scientific decision-making paradigm for the sustainable symbiosis of urban ecosystems in the context of the Anthropocene.

Key words: urban green spaces, biodiversity conservation, ecosystem services, sustainable management, Convention on Biological Diversity