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初步讨论了鸭绿江口溶解态 Ｐ、 Ｓｉ 的地球化学行为。与我国其他主要河流相比，鸭绿江口中的 Ｓｉ Ｏ２ －３含量较北方河流高，接近于南方河流水平，为９５２ μｍｏｌ／ Ｌ，这主要由上游流域盆地的气候及自然条件所决定。而 Ｐ Ｏ３ －４ 由于上游水库中浮游生物的消耗含量偏低，仅为０２０ μｍｏｌ／ Ｌ。鸭绿江口 Ｓｉ Ｏ２ －３ 的行为是保守的，主要受物理过程的影响； Ｐ Ｏ３ －４ 则表现出明显的再活化
The geochemical behavior of dissolved P and Si in the Yalu River estuary was discussed preliminarily. Compared with other major rivers in China, the Si O2 -3 content in the Yalu River estuary is higher than that in the northern river, which is close to the southern river, which is 952 μmol / L, which is mainly determined by the climate and natural conditions of the upper basin. However, P O3 -4 was only 0.20 μmol / L due to the low level of plankton consumption in the upstream reservoir. The behavior of Si O2 -3 at the Yalu River Estuary is conservative, mainly influenced by physical processes; P O3 -4 shows significant reactivation