厦门西海域营养盐的地球化学Ⅰ.无机氮

GEOCHEMISTRY OF NUTRIENT SALT IN WEST AREA OF XIAMEN HARBOUR I. INORGANIC NITROGEN

报道了1987年厦门西海域海水中无机氮的地球化学过程。该海区无机氮含量较高,年均值达14.53μmol/L,并有着逐年加的趋势。无机氮的季节平面分布是,夏、秋、冬季呈现湾内高、湾外低;春季则相反,这是由于春季浮游值大量繁殖,消耗了大量无机氮的结果。浮游植物数量同无机氮之间存在着明显的负相关。调查区NO_3-N_4量最高、NH_4-N次之,NO_2-N最低,它们之间存在着一定的相关性。

The geochemistry process of inorganic nitrogen in seawa ter of west area of the Xiamen Harbour throughout 1987 was reported in this paper.The result It is revealed that the concentration of inorganic nitrogen in seawater of the area was high,averaging 14.53***********umol/L.The horizontal distribution of inorganic nitrogen was higher inside the harbour than outside the harbour in Summer,Fall and Winter,which was reversed in Spring due to the amounts of plankton reproduced that season which consumed conlarge side-rable inorganic nitrogen.A negative correlation was evident between the quantity of plankton and that of inorganic nitrogen.Of all forms inorganic nitrogen,the amount of NO3-N ranked highest,NH4-N second and NO2-N third.