Framework for the application of ecosystem services based urban ecological carrying capacity assessment in the urban decision-making process

Abstract

Urban Ecological Carrying Capacity (UECC) is widely studied as a comprehensive measure of urban ecology. Several tools, like an ecological footprint, comprehensive index system, system dynamic models, etc., are used to study UECC. In recent times, ecosystem services (ES) have been applied in analyzing carrying capacity to promote sustainable development. ES-based analysis helps study supply-demand mismatches, identify dependencies on natural systems, and understand trade-offs between strategic plans. The ES approach effectively scopes prioritized services, collects baseline data, makes choices between alternatives, and studies cumulative impacts. However, the lack of application-oriented frameworks hinders the mainstreaming of ES in urban planning. Therefore, the study proposes a framework for using ES-based UECC assessment in urban decision-making. It employs a two-stage methodology: first, a bibliometric analysis of UECC to identify knowledge gaps and trends, and second, the development of a framework for the application of ES based UECC in urban decision-making process based on the gaps identified from bibliometric analysis. The bibliometric results reveal that further research is needed to strengthen the link between ES and UECC. ES provides a comprehensive framework that includes cultural and social subsystems, enhancing the practicality and comprehensiveness of carrying capacity assessments. Based on the literature review Strategic Environmental Assessment (SEA) is identified as the tool that facilitates the entry of ES in the urban decision-making process. The main aim of the framework is to combine the ES cascade model, SEA, and carrying capacity to establish a comprehensive and practical approach to decision-making that promotes sustainable urban development. The proposed framework considers various aspects, including its environment, societal requirements, and resource constraints. The ES-based UECC concept can be extended to define limits to urban growth for ensuring the sustainable development of urban settlements.