Impacts of water level regulation on sediment physic-chemical properties and phosphorus adsorption-desorption behaviors

- Sediment particle size distribution shifted toward larger after Water level (WL) regulation.
- WL regulation promoted loss of organic matter within sediment.
- WL regulation favored the generation of amorphous iron oxides and amorphous aluminum oxides.
- Long term WL regulation increased the sediment phosphorus adsorption capacity but reduced the phosphorus adsorption buffering capability.