基于马卡维耶夫法与地貌-水文指标的造床流量综合确定研究OA

The channel-forming discharge is a core parameter of river geomorphological evolution and ecological restoration.Traditional single methods exhibit significant uncertainty in determining the channel-forming discharge.Based on the channel-forming discharge corresponding to the multi-year average sediment transport power calculated using the Markov method at Xinglongpu Hydrological Station on Laoha River,the bankfull discharge identified through fluvial geomorphology,and flow values corresponding to different guarantee rates in hydrological statistics,a weighted comprehensive judgment model was constructed by introducing the entropy weight method.The comprehensive channel-forming discharge of Xinglongpu Station in Laoha River was determined to be 286 m3/s,and the model's rationality was verified through the river's long-term average morphology and historical evolution.The findings provide important practical guidance for river management,ecological flow guarantee,and floodplain regulation in the Laoha River basin,while also offering methodological reference for calculating the channel-forming discharge of seasonal and sandy rivers in northern regions.