关于过鱼设施的争论及鱼类保护措施研究OA

Fish passage facilities have been the subject of ongoing debate in China for decades regarding their neces-sity and effectiveness since the construction of the Gezhouba dam.The aim of the present study was to critically assess theories that support and question the efficacy of fish passage facilities.Through comparative case analysis and theo-retical examination,the present study moves beyond the superficial"fish rescue debate"to explore underlying eco-logical theoretical roots and practical challenges.Three typical cases—the Gezhouba dam,Poyang Lake Water Con-trol Project,and new Three Gorges shipping channel—reveals conflict between"human-led restoration"and"preser-vation of natural processes."Based on this,this paper introduces the theory of heavily disturbed river ecology,ana-lyzes the scientific validity and effectiveness of current fish protection measures for water conservancy and hydro-power projects such as ecological flow,fish passage facilities,and proliferation and release,and demonstrates the significance of prioritizing habitat protection and restoration.A systematic strategic framework for fish conservation is developed,proposing coordinated efforts across five dimensions:integrated planning of fish conservation measures,prioritizing the restoration of natural flow regimes,systemic advancement of habitat restoration,targeted implementa-tion of stock enhancement,and scientific design of fish passage facilities.Ultimately,this framework aims to shift from project-level compensation to holistic watershed ecosystem restoration,providing scientific guidance for promot-ing the ecological construction and high-quality development of water projects in China.