LAUSR

Abstract In this study, a model for the development of the wide floodplain in the lower Yellow River, in China was proposed. This model includes flood control schemes using grading criteria, enables sediment deposition in partitioned zones, and allows free exchange between channel runoff and sediments. The wide floodplain located between the main channel and levees are divided into three typical regions: the tender, low, and high floodplains. Different ecological models should be applied when these floodplains are constructed. This study described the associated research ideas and methodology, and clarified several key issues, such as sediment prediction and regulation, land planning, land use, and multi-dimensional framework of safeguard measures for industries in the lower Yellow River floodplain. A refined ecological development model was proposed for the lower Yellow River floodplain, and future work on ecological and sustainable development of the lower floodplain was suggested. To establish a comprehensive system integrating runoff and sediment resource regulation in the Yellow River Basin, future work should focus on runoff and sediment exchange mechanisms in the wandering lower reach. Furthermore, it is necessary to improve theories on floodplain planning and ecological construction, and these theories should be integrated with the research findings on land development across the lower Yellow River floodplain.