Fig. 4: Dynamic evolution of newly formed delta wetlands under three river flow path scenarios.

a The spatial distribution of intertidal (green) and supratidal (orange) zones. The sequence of maps for each scenario shows the expansion and transformation of these areas over time. White areas indicate the original delta. b Two graphs depict the temporal changes of the supratidal area (left) and the intertidal area (right) in wetland area. QN the current existing pathway, QS the Qingshuigou Southeast pathway, DK the Diaokou River pathway; a: year.