Author(s): Na Wei, Yangwen Jia, Jinjun You, Cunwen Niu, Jiancang Xie, Wen Wang
Linked Author(s): Na Wei
Keywords: Hierarchical water use, water demand level, eco-environmental flow, water quantity regulation model, Weihe River Basin
Abstract: The traditional single-hierarchy of water use priority (Domestic water use - Irrigation water use - Industrial water use - Ecological water use) for water resources allocation is not compatible with practical requirement in water deficient and highly competitive areas; allocation results cannot guide practice. To realize the reasonable water resources allocation and guarantee the dispatching implementation of eco-environmental flow, the concept of hierarchical water use is put forward, which distinguishes water users into different levels. The thought of water quantity regulation based on hierarchical water use and eco-environmental flow was proposed. A water quantity regulation model was constructed for regulating calculation of ecological water. To evaluate the applicability of the proposed model, the method was applied to a case study in the water-stressed Weihe River Basin, China. The balance of water demand-supply and flow processes for key sections under different scenarios can be obtained. Compared with the three-level management targets of eco-environmental flow, the guarantee rate of ecological water for each section is discussed. Although further study is desired, the results are believed to be an important referential value to sustainable development in the basin
Year: 2017