基于协同学理论的黄河水沙响应机制与阈值研究OA

Based on synergetics theory,the order parameters of water-sediment system in different reaches of the Yellow River Basin were identified,and the response mechanism of the order parameters to water-sediment dynamic factors was clarified.The results showed that the order parameter of the upper reach is the bank-full discharge of Sanhuhekou,which is mainly controlled by the inflow during the flood season,and is proportional to the outflow volume and the flow process parameters during the flood season.The order parameter of the mid-dle reach is Tongguan elevation,which is related to the operation of Sanmenxia Reservoir,and is inversely proportional to the annual water discharge ratio and sediment discharge ratio.The order parameter of the lower reach is the bank-full discharge of Sunkou,which is constrained by upstream water and sediment conditions.It is proportional to the annual outflow discharge and flood-season flow process parameters,and inversely propor-tional to the flood-season inflow sediment coefficient.By establishing the quantitative response relationship be-tween the two,the regulation thresholds of water-sediment dynamic factors for Liujiaxia,Sanmenxia,and Xiaolangdi reservoirs under conditions of maintaining water-sediment balance of the Yellow River were obtained,which provides critical references for optimizing water-sediment regulation strategies.