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基于北黄海海域秋季(2011年10月)航次的调查资料,对北黄海秋季溶解有机氮(DON)的时空分布特征及其影响机制进行了探讨。结果表明,2011年秋季北黄海表层水体DON的平均浓度为11.9μmol/L,底层平均浓度为9.98μmol/L,表、底层DON占总溶解态氮(TDN)的比例分别为71.4%和48.9%。受陆源输入及生物作用影响,表层DON在鸭绿江口附近海域有高值。各断面DON含量基本由表至底逐渐降低,深水区含量低于浅水区。
Based on the survey data of the autumn (October 2011) voyage in the North Yellow Sea, the temporal and spatial distribution characteristics of dissolved organic nitrogen (DON) in the northern Yellow Sea and its influencing mechanism were discussed. The results showed that the average concentration of DON in surface waters was 11.9μmol / L and the average concentration of bottom layer was 9.98μmol / L in autumn 2011. The proportions of DON and total dissolved nitrogen (TDN) were 71.4% and 48.9%, respectively, . Affected by terrestrial inputs and biological effects, surface DON has high value in the sea near the Yalu River Estuary. The content of DON in each section decreased gradually from the bottom of the table to the bottom, and the content of deep water was lower than that of shallow water.