秋季北黄海溶解有机氮的分布特征及机制分析  

Distribution and controlled factors of dissolved organic nitrogen in North Yellow Sea in Autumn

作　　者：胡莹莹[1] 李延伟[2] 宗虎民[1] 陈淑梅[1] 张浩[1] 

机构地区：[1]国家海洋环境监测中心,国家海洋局近岸海域生态环境重点实验室,辽宁大连116023 [2]泰山学院化学化工学院,山东泰安271021

出　　处：《海洋环境科学》2014年第6期843-847,共5页Marine Environmental Science

基　　金：国家科技支撑计划课题(2010BAC69B01);河口海岸学国家重点实验室开放基金(SKLEC-KF201207)

摘　　要：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 cruises carried out in the North Yellow Sea in autumn（ October 2011）,spatial and temporal distribution and influence factors of dissolved organic nitrogen（ DON） were discussed. The mean concentrations of DON in the surface and bottom layer in the North Yellow Sea were respectively 11. 9μmol / L and 9. 98μmol / L. In the surface layer,DON accounted for 71. 4% of total dissolved nitrogen（ TDN）,and 48. 9% in the bottom. Influenced by terrigenous transport and biological action,the concentrations of DON were high near the Yalu River in the surface layer. For each transect,the concentrations of DON decreased from the surface to the bottom,which in deep water were lower than in shallow water.

关 键 词：北黄海 溶解有机氮 时空分布 影响机制 

分 类 号：P734[天文地球—海洋化学]