长江河口羽状锋溶解态无机氮磷的生物地球化学特征  

Biogeochemical Character of the Dissolved Inorganic Nitrogen, Phosphorus at Plume Front in the Changjiang River

作　　者：傅瑞标[1] 沈涣庭[1] 

机构地区：[1]华东师范大学河口海岸国家重点实验室,上海200062

出　　处：《海洋通报》2002年第4期9-14,共6页Marine Science Bulletin

基　　金：国家自然科学基金项目资助(编号:49736220)

摘　　要：利用年月在长江河口的实测资料探讨了溶解态无机氮、磷在羽状锋区的生物地球化学特 1988 8 征。结果表明:溶解态无机氮、磷的浓度在锋面和盐跃层出现明显的跃变;在～水深处( 1 ) ( 2 ) 1025 m NO2-和 NH4+的浓度出现峰值;垂向环流可把底层海水中再生的 ( 3 ) NO3-和 PO43-输送到上层,以供浮游植 物的吸收。Biogeochemical character of the dissolved inorganic nitrogen, phosphorus at the plume front has been studied based on the data, which were observed in the Changjiang River in 1988. The results are as follows. The concentrations of the dissolved inorganic nitrogen, phosphorus change abruptly at the plume front and halocline. The concentrations of NO2- and NH4+ are very ～high at 1025 m depth. The vertical circumfluence transports NO3- and PO43- which are released from organisms at bottom to phytoplankton.

关 键 词：长江河口 羽状峰 溶解态无机氮 磷 生物地球化学特征 盐跃层 

分 类 号：P734[天文地球—海洋化学] P736.4[天文地球—海洋科学]