作 者：Chang, JianxiaGuo, AijunWang, YiminHa, YanpingZhang, RanXue, LuTu, Ziqian
作者机构：State Key Laboratory of Eco-hydraulics in Northwest Arid RegionXi'an University of Technology Xi'an China
出 版 物：《WATER RESOURCES RESEARCH》
年 卷 期：2019年第55卷第2期
基 金：National Key Research and Development Program of China [2017YFC0404406]National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51679189, 51679187, 91647112]
主 题：Reservoirs (water)DroughtEconomic and social effectsWater levelsWater resourcesWatershedsMeteorological informationMultireservoir systemsOperation systemOptimal partitioningOptimal reservoir operationsReservoir operationSocial and economic developmentYellow River basin
摘 要：Severe drought events worldwide have considerably unfavorable effects on social and economic development. This paper proposes a hedging policy triggered by the seasonal drought prevention limiting water level (DPLWL) for reservoir operations during a drought event. By using this hedging policy, water resources managers can determine operating policies for drought emergence management according to specific drought conditions. A modeling framework that determines the seasonal DPLWL under different drought conditions is developed based on long-term hydrological and meteorological information and optimal reservoir operation schemes. In particular, Fisher s optimal partitioning algorithm is applied to identifying the seasonality of the DPLWL based on hydroclimatological factors and reservoir storage conditions. The multireservoir system in the Yellow River Basin is used as a case study to assess the performance of the hedging policy triggered by DPLWLs. The results show that DPLWL has a significant advantage over the standard reservoir operation rules when dealing with multireservoir operation for drought mitigation. ©2019. American Geophysical Union. All Rights Reserved.