摘要
本文据珠江口周年(1987年2月至1988年2月)调查资料,分析了珠江口桂山岛附近海域的三氮变化规律,讨论了三氮之间的相互关系,通量和停留时间以及各种因素对三氮的影响。结果表明:珠江河口水中三氮的时空分布具有夏、冬季含量高,春、秋季含量低,并随向外海方向递减的特点;三氮之间的关系可分别用倒指数方程Y=exp(A+B/X)的数学模式描述;NH_4-N,NO_3-N,NO_2-N的通量和停留时间分别为33.9,401.0,15.8g·atN/s和3.84,3.96,4.41d。
The regularities of annual change for dissolved inorganic nitrogen (DIN), including NH4-N, NO3-N, NO2-N were analysed and mutual relation, fluxes and residence times a& well as various influencing factors were also discussed according to one year observed data in Zhujiang Estuarine waters. The results showed that, in Zhujiang Estuarine waters, spatial and temporal distribution of DIN has the feature of high contents in summer and winter, low contents in spring and autumn, with the contents gradually decreasing toward the sea; the relationship among the contents of DIN could be described using a formula Y = exp(A + B/X); and the fluxes and residence times for NH4-N, NO3-N, NO2-N were 33.9, 401.0, 15.8 g·atN/s, and 3.84, 3.96, 4.41 days, respectively.
出处
《热带海洋》
CSCD
1992年第3期84-88,共5页
关键词
无机氮
珠江口
水体
Inorganic Nitrogen, Zhujiang Estuary, Water Body
