River Ecosystem Health Assessment Based on Fuzzy Logic and Harmony Degree Evaluation in a Human-Dominated River Basin

River health assessment is a critical basis for river sustainable management. Taking the Neijiang in Chengdu Plain Southwest China as an example, of typical human-dominated ecosystem was assessed combining point-river-basin scales. According to connotation health, 16 indicators 3 aspects, including habitat characteristics, biological communities, and social services, were selected establish indicator system health. Field investigation, remote sensing, geographic information system, environmental DNA used quantify indicators. With fuzzy comprehensive evaluation harmony degree evaluation, assessed, results showed that index rivers ranged from 0.73 0.85, indicating sub-healthy healthy levels. The coordinated development level downstream restricted by between ecological integrity service function. Furthermore, main human activities construction dams changes land use/cover study area. spatial pattern indicated impact on intricate. framework proposed herein provided tool local management would apply other basins.