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对13个河口站位的沉积物以及莱州湾两个站位的柱状沉积物中的磷的三种基本结合态进行了测定。结果表明：河口沉积物中总磷量与河流污染程度有关。磷的主要存在形态是以磷灰石结合态磷（PAI）存在的无机结合态磷（PIN）。莱州湾的柱状沉积物磷含量以及存在形态在离岸近和表层站位受到河流一定程度的影响，而在深层和离岸远的站位受河流影响的程度降低，各种形态的磷含量已趋于平衡。
Three basic bound states of phosphorus in the sediments in 13 estuarine stations and in columnar sediments at two stations in Laizhou Bay were measured. The results show that the amount of total phosphorus in estuarine sediments is related to the degree of river pollution. The dominant form of phosphorus is inorganic bound phosphorus (PIN), which exists as apatite bound phosphorus (PAI). The phosphorus content and its existing morphology in the columnar sediments in Laizhou Bay are affected by the rivers near the offshore and surface stations to a certain extent. However, the influence of rivers in the deep and offshore stations is reduced. The phosphorus content in various forms To balance.