River damming is ubiquitous which would impact the nutrient cycles of the river systems. Here an early eutrophicated reservoir (Changshou Lake) of the Three Gorges Reservoir (TGR) was selected to investigate the phosphorus (P) biogeochemical migration. Nine sediment cores were collected in the littoral nature lacustrine wetland to help to determine the phosphorus distribution and fraction along the water level. Results revealed that the concentrations of phosphorus varied from 106 to 1178 mg/kg, with the highest concentration reported in the shallow water area. This was affected by the fluctuations of the water level and algae accumulation from the deep-water. In addition, it also indicated that the higher accumulation of phosphorus in the shallow water areas was predominated by HCl-P and BD-P fractions, which were potentially the main source of phosphorus in lacustrine wetlands. Hence, more attention should be paid to the autochthonous phosphorus control in the water level fluctuation area.

河流筑坝无处不在，这将影响河流系统的养分循环。这里选择三峡水库（TGR）早期富营养化水库（长寿湖）进行磷（P）生物地球化学迁移研究。在沿海自然湖泊湿地中收集了九个沉积物芯，以帮助确定沿水位的磷分布和比例。结果表明，磷的浓度从 106 到 1178 mg/kg 不等，据报道，浅水区的浓度最高。这受到水位波动和深水藻类积累的影响。此外，还表明，浅水区磷的积累量较高，以 HCl-P 和 BD-P 组分为主，它们可能是湖泊湿地中磷的主要来源。因此，应更加重视水位波动区的本土磷控制。