A new framework for assessing ecosystem health with consideration of the sustainable supply of ecosystem services

ContextThe establishment of an ecosystem health assessment framework from a human-environment view is vital to landscape sustainability. Although several studies have improved the assessment framework by integrating ecosystem services (ESs) supply or demand, consideration of the sustainable supply of ESs is lacking.ObjectivesThe objective of this paper is to improve the current methodological framework by integrating ecological integrity and the sustainable supply of ESs to establish an ecosystem health assessment framework.MethodsAn improved assessment framework, including four indicators, vigor, organization, resilience, and ecosystem services supply rate, was established from the perspective of human-environment systems. Then, the performance of the improved assessment framework was demonstrated in a case study in China from 2000 to 2020.ResultsFrom 2000 to 2020, the overall spatial pattern of ecosystem health values in China was high in the southern and southeastern coastal regions, and low health values were mostly located in the western region, parts of Inner Mongolia, and metropolitan areas, with a descending trend from southeast to northwest. The imbalance between the potential and actual supply of ESs greatly contributed to the deterioration of regional ecosystem health. During the study period, the regional ecosystem in China was found to be in a more unhealthy state than in traditional Vigor-Organization-Resilience-Ecosystem services (VORES) evaluation.ConclusionsThe improved assessment framework that incorporates the ecological integrity and sustainable supply of ESs provides a new perspective for understanding the complex inherent characteristics of ecosystems and the regional human-nature connectedness in coupled human-environment systems. Our results could serve as a scientific reference for practical landscape governance in a changing world to achieve landscape sustainability.