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Eco-environmental Assessment of Small Rocky Islands: An Empirical Framework Development and Application
Shixuan Deng, Yuanbin Fu and Jing Kang

Small rocky islands represent the most prevalent and widely distributed island type, particularly in China, where they serve as a dominant geomorphological feature with fragile ecosystems. To assess their ecological status, this study established a comprehensive assessment framework based on an analysis of the eco-environmental characteristics and key influencing factors of small rocky islands. Using methodologies such as the AHP and fuzzy mathematics, we conducted an empirical assessment of Yuan Island in Dalian. The results indicated that Yuan Island’s overall eco-environmental quality fell within the “Medium” range. Specifically, the surrounding marine area exhibits favorable conditions, while the island’s ecosystem is subhealthy, highlighting the need for enhanced ecological management measures. The proposed assessment framework and methodology not only objectively reflect the current status and challenges of island eco-environments but also provide a theoretical and technical foundation for the scientifically informed conservation of small rocky islands.

Keywords: Small rocky islands; eco-environment; comprehensive assessment; Dalian Yuan Island; fuzzy mathematics; index system