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本文根据１９９２年５月和８月辽河口水域营养要素的两次实测结果，讨论了溶解态无机氮（ＮＯ－Ｎ、ＮＯ－Ｎ、ＮＨ－Ｎ）、活性磷酸盐（ＰＯ－ｐ）和活性硅酸盐（ＳｉＯ－Ｓｉ）在辽河口水域的含量，分布特征，化学特性及其入海通量。结果表明：江河口水域溶解态无机氮含量范围为１２．１３～２２２．７０μｍｏｌ／Ｌ，活性磷酸盐含量范围为０．７１～２．８１μｍｏｌ／Ｌ活性硅酸盐含量范围为３．５６～９０．４６μｍｏｌ／Ｌ。辽河口水域的溶解态无机氮、活性磷酸盐和活性硅酸盐基本呈保守性的化学行为，其入海通量分别为７．０８×１０￣３ｔ、２１６ｔ和５．９２×１０￣３ｔ左右。
Based on the two measured results of nutrient elements in Liaohe Estuary waters in May and August 1992, the effects of dissolved inorganic nitrogen (NO-N, NO-N, PO-P) and activity Silicate (SiO-Si) in the Liaohe Estuary, its distribution, chemical characteristics and flux into the sea. The results showed that the content of dissolved inorganic nitrogen in the estuarine waters ranged from 12.13 to 222.70μmol / L, the active phosphate content ranged from 0.71 to 2.81μmol / L, and the range of active silicates ranged from 3.56 to 90 .46 μmol / L. The dissolved inorganic nitrogen, active phosphate and active silicate in the Liaohe River estuary basically showed conservative chemical behavior, and their fluxes into the sea were 7.08 × 10 -3 t, 216 t and 5.92 × 10 -3 t, respectively.