China Water Resources

福建省平潭岛是海峡西岸经济区建设的重要先行先试综合实验区。然而受海岛水文特征影响，降水时空分布不均，截水能力弱且蒸发强烈，水资源短缺问题突出。为支撑平潭综合实验区跨越式发展用水需求，福建闽江调水工程和福建省平潭及闽江口水资源配置工程相继建成并投入使用，三十六脚湖水库作为岛内核心水资源调控枢纽，承担着引调水蓄存与供水调度等关键功能，其科学调度对于保障区域水资源供应至关重要。在分析区域水资源配置与供水任务基础上，识别了三十六脚湖水库调度的防洪与保供双重需求，以“常遇洪水不溢流、储水备水有保障”为调控原则，通过预置防洪库容和分级供水调度，制定了三十六脚湖水库供水调度水位分级线，并借助水位阈值划分实现缺水预警与抗旱决策响应。结果表明，该调度策略有效提升了水库调度科学性、灵活性与安全性，增强了突发事故和极端气候条件下的供水保障能力，为平潭综合实验区的水资源管理提供了科学依据，对同类海岛地区水资源管理具有参考价值。

Pingtan Island is an important comprehensive experimental zone for pioneering policies in the construction of the West Coast Economic Zone. However, due to its hydrological characteristics as an island, precipitation is unevenly distributed in time and space, water retention capacity is weak, and evaporation is strong, leading to prominent water scarcity problems. To meet the water demand of the leapfrog development of the Pingtan Comprehensive Experimental Zone, the Minjiang River Diversion Project in Fuqing and the Water Resources Allocation Project of Pingtan and Minjiang Estuary in Fujian Province have been successively completed and put into operation. As the core hub for water regulation on the island, the Sanshiliujiao Lake Reservoir undertakes key functions such as storing diverted water and supplying water through scheduling, and its scientific operation is crucial for ensuring regional water resource supply. Based on the analysis of regional water resource allocation and supply tasks, the dual requirements of flood control and water supply in the operation of the Sanshiliujiao Lake Reservoir were identified. Guided by the principle of “no overflow under common flood conditions and reliable water storage for supply”, water supply scheduling water level lines were established through pre-allocation of flood control storage capacity and tiered water supply operations. Water level thresholds were applied to achieve drought warning and decision-making response. The results show that this scheduling strategy effectively improves the scientific basis, flexibility, and safety of reservoir operation, enhances the reliability of water supply under emergencies and extreme climate conditions, provides a scientific basis for water resource management in the Pingtan Comprehensive Experimental Zone, and offers reference value for water resource management in similar island regions.