The Distribution and Species of Nutrient in the Yangtze River Estuary
The Distribution and Species of Nutrient in the Yangtze River Estuary
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发表时间：
2009
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通讯作者：
Gong Yao
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作者：
Gong Yao
2007年4月对长江口及邻近海域的营养盐浓度和种类进行了测定。长江口及邻近海域营养盐浓度变化明显，近岸浅海营养盐浓度变化较大。长江口及邻近近岸海域营养盐分布受多个水团的影响。长江冲淡水携带丰富的氮、磷、硅营养盐到表层，台湾暖流主要影响底层和长江口附近的上升区。溶解无机氮(DIN)以硝酸盐为主，长江口及邻近海域溶解总氮(DTN)以DIN为主，台湾暖流区溶解总氮(DON)以溶解有机氮(DON)为主，长江口及邻近海域以磷为主，台湾暖流区以溶解有机磷(DOP)为主。结果表明，硅酸盐和硝酸盐表现保守，而硅酸盐和磷酸盐表现不保守。
Concentrations and species of nutrient were determined in the Yangtze River estuary and its adjacent area in April 2007.Concentrations of nutrients displayed obviously variability in the Yangtze River estuary and its adjacent area,with higher levels in the shallow coastal waters.The nutrients distribution of Yangtze River estuary and its adjacent coastal area are influenced by several water masses.Yangtze River diluted water carries abundant N,P,Si nutrients to the surface layer,Taiwan Warm Current mostly affects the bottom layer and in the upwelling area adjacent to the Yangtze River estuary,and that Subei Coastal Water and Minzhe Coastal Water mainly influence the inshore area.Nitrate is the predominant species of dissolved inorganic nitrogen(DIN).DIN is the predominant species of dissolved total nitrogen(DTN)in the Yangtze River estuary and its adjacent coastal area,while dissolved organic nitrogen(DON)is the predominant species in the Taiwan Warm Current area.Phosphate is the predominant species of dissolved total phosphorus in the Yangtze River estuary and its adjacent coastal area,while dissolved organic phosphorus(DOP)is the predominant species in the Taiwan Warm Current area.The data indicated that silicate and nitrate behave conservatively,but silicate and phosphate did not behaved conservatively.