Changjiang Riverine and Estuarine Hydro-morphodynamic Processes

This book provides a comprehensive and systematic analysis of the morphodynamic process of the Changjiang River from upstream to estuary in the Anthropocene. As the longest river in China, the Changjiang River has nurtured Chinese civilization with ample natural resources for thousands of years. Evidence highlights that the Changjiang River has experienced intensive human interference and indicated dramatic changes in the Anthropocene, including no flood in flood season, no dry in dry season in discharge; less flood in flood season, more dry in dry season in sediment; riverbed shifts from accretion to erosion; lakes in the middle-lower reach turn from sediment sink to source; estuarine tidal flat exhibits self-organization characteristics and maintains the current accretion state; estuarine branches that connect to the sea show district morphodynamic patterns; and depocenters of the submerged delta indicate periodic shifts. The book stresses that dam construction upstream, practically the Three Gorges Dam, the world's largest hydraulic engineering project, has significant influences on the hydrology and geomorphology of the middle-lower reach but has a slight effect on estuarine delta development. The geomorphological structure of the estuarine channel is dominated by local land reclamation, navigation, and dredging. This book clarifies the river-estuary morphodynamics of the Changjiang River and indicates the general features of global mega rivers under human interference as well as their own response mechanisms. This book also exhibits the potential risk of river-estuary deltas in the future, as both material and dynamics are experiencing acceleration adjustment.

Thoroughly analyzes the morphodynamics of Asia's longest river from the perspective of the Anthropocene Systematically illustrates how the Changjiang River estuary responds to strong human activities and natural forcing changes Demonstrates the distinct lake accretion/erosion and lacustrine delta evolution mechanism along the Changjiang River that are different from the other river systems of the world Analyzes the sediment source -to -sink shift along the Changjiang River system from upstream to estuary and their coupling regimes with the channel Brings forward unique morphodyanmic variation pattern of estuarine channels in response to different forcing

Auteur

Professor Dai is a professor in the State Key Laboratory of Estuarine and Coastal Research' East China Normal University, Shanghai. Dr Dai is interested in riverine, estuarine and coastal system risk analysis; coastal and ocean resource management; riverine, estuarine, and coastal morphodynamics;, wetland hydrological process and has gained excellent achievements. He has published over 70 research paper in international journals and 5 monographs. He has been the leader of over10 national natural science foundation of China, including the national key program. Prof. Dai has obtained a number of national or provincial awards. He has won the program for New Century Excellent Talents at Chinese University. Dr Dai has been a visit scholar in the Netherland and America, and developed a long cooperation with America, Britain, and the Netherlands. Meanwhile, he serves as editorial board member of Geomorphology, Ocean and Coastal Management, Water, Scientific Reports, and an associate editor ofFrontiers of Earth Science.

Contenu
Changjiang River basin Overview.- Hydrological Processes of the Changjiang River.- Lake hydro-morphodynamic Processes of the Changjiang River.- Channel sediment-dynamics along the mid-lower reach of the Changjiang River.- Tidal flat morphodynamics of the Changjiang Estuary.- Changjiang Estuary modern morphodynamic processes.- Estuarine submerged delta modern morphodynamics.- Morphodynamic couplings between river and delta.