The contents of occlude phosphorus (Oc-P), auto-calcium-bound phosphorus (Aca-P), debris phosphorus (De-P) and organic phosphorus (Or-P) were quite stable in sediment cores comparatively.

• 闭蓄态磷、自生磷、碎屑磷和有机磷在垂向上的含量分布较为稳定，有机磷含量最低。