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Equilibrium relations for water and sediment transport in the Yellow River

International Journal of sediment Research 2021年第2期36卷 328-334页

作者： Xujian Chen Yuqi An Zhihao Zhang Chunhong Hu China Institute of water Resources and Hydropower Research (IWHR) State Key Laboratory of Simulation and Regulation of water Cycle in River Basin (SKL-WAC) Institute of Disaster Prevention

The equilibrium relations for water and sediment transport refer to the relative balance of sediment transport and the relative stability of river courses formed by the automatic adjustment of riverbeds. This is the theoretical basis for the comprehensive management of sediment in the Yellow River. Based on the theories of sediment carrying capacity and the delayed response of riverbed evolution, in this study, the equilibrium relations for water and sediment transport in the Yellow River are established. These relations include the equilibrium relationships between water and sediment transport and bankfull discharge in the upper and lower Yellow River and between water and sediment transport and the Tongguan elevation in the middle Yellow River. The results reveal that for the Ningmeng reach, the Tongguan reach, and the lower Yellow River, erosion and deposition in the riverbeds are adjusted automatically, and water and sediment transport can form highly constrained equilibrium *** newly established equilibrium relationships can be applied to calculate the optimal spatial allocation scheme for sediment in the Yellow River.

关键词： Yellow River water and sediment transport Riverbed evolution Bankfull discharge Equilibrium relationship

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From fluvial dynamics to eco-fluvial dynamics

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International Journal of sediment Research 2019年第6期34卷 531-536页

作者： Guojian He Hongwei Fang Jianyu Wang Tao Zhang State Key Laboratory of Hydro-science and Engineering Department of Hydraulic EngineeringTsinghua University

sediment plays a very important role in the functioning of river *** is the basic substance for the survival of benthic animals and aquatic *** the other hand,the growth of biofilms and biodisturbance of benthos affect the sediment transport *** the increasing attention to protect aquatic ecosystems,the importance of habitats has become increasingly *** need to study the interactions among sediment,flow,riverbed deformation,and aquatic ecosystems naturally leads to the proposed discipline of eco-fluvial *** this paper,the basic concept and main research content of eco-fluvial dynamics is introduced with the Yarlung Tsangpo River as the research *** case study is an example of an aquatic ecosystem in an ever-changing environment because of the effects of climate *** results of analysis of eco-fluvial dynamics will provide a scientific basis for decision support for the government.

关键词： Fluvial dynamics Eco-fluvial dynamics water and sediment transport Aquatic ecosystems Interactive response

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