【摘要】 用1983年9月至1985年1月南海中部海洋综合调查资料,测定了南海中部水体中三种无机氮的含量,报道了它们的垂直分布、季节变化、百分组成及N/P原子比值的变化特征,并探讨了这三种无机氮含量与水体中氧含量和叶绿素a含量之间的相互关系,建立了相应的关系式更多还原

【Abstract】 The results of survey data from September 1983 to January 1985 indicated that vertical distribution of three nitrogens featured the properties of oceanic waters:NO3-N contents increased with depth increase; NO2-N contents were below 0.05 ugat N/L for all layers except small accumulation at 75m or 100m layers; there was no clear tend of vertical distribution of NH4-N. The seasonal variation of three kinds of nitrogen had properties of tropic oceans: small seasonal variations and limiting factors of phytoplankton growth by inorganic nitrogen.For the water column below surface of the central part of South China Sea, conversion degree of inorganic nitrogen was very high, NO3-N consisted of total inorganic nitrogen up to 99%, and ratio of NO3-N/P was nearly 15:1.更多还原