分析和探讨了东海黑潮区海水无机氮的分布特征成因机制.结果表明,春、秋季陆架区表层无机氮测值较高,黑潮主干为低值区,深层则相反.深层氮的分布与溶解氧、水温及密度相吻合,等值线走向与黑潮流轴完全一致.春、秋季底层氮与Aou呈正相关,与水温呈负相关,表明其含量变化主要依赖于生化过程. The results showed that inorganic nitrogen in the surface of the shelf area in spring and autumn was higher, and the main Kuroshio was in the low value area, while the deep layer was the opposite.The distribution of deep nitrogen and Dissolved oxygen, water temperature and density are in good agreement with each other, and the contours of the contours are consistent with the trend of the Kuroshio Current Axes. There is a positive correlation between nitrogen and Aou in spring and autumn, and a negative correlation with water temperature, indicating that the content changes mainly depend on biochemical processes.