供水安全约束下椒花水库生态补水窗口期与动态调控研究OA

Aiming at the common problem of coordination between water supply and ecology faced by reservoir ecological water replenishment in humid southern regions,this paper takes Jiaohua Reservoir as the research object and constructs a multi-scenario regulation model.The coupled effects of initial water level,replenishment start month,and ecological replenishment volume on water supply guarantee and ecological benefits are systematically analyzed,with the objective of identifying the optimal regulation strategy under the constraint of water supply satisfaction rate≥95%.The results indicate that 155 m is the effective implementation threshold for ecological water replenishment,175 m is the full-strategy water supply security threshold,and the period from February to April constitutes the optimal replenishment window,with March yielding the best comprehensive benefits.Based on the initial water level,three stages of high,medium,and low are divided,and a differentiated dynamic regulation scheme is proposed.A coupled regulation model of ecological replenishment volume,replenishment start month,and minimum initial storage capacity is established.The phased dynamic regulation strategy proposed in this study achieves a balance between water supply safety and ecological benefits,providing technical support for ecological regulation of similar reservoirs in the Xiangjiang River basin.