厦门马銮湾水域无机氮的化学特征

Chemical characteristics of inorganic nitrogen in Maluan Bay , Xiamen

根据 1 998年 5、9、1 1、1 2月对马銮湾的调查结果 ,讨论了湾内水体无机氮的化学特征及其对海洋环境的影响 .结果表明 ,马銮湾无机氮含量已达到富营养化水平 .在水温较低的季节 ,NO3 N为溶解无机氮的主要存在形态 ;在水温较高的季节 ,NH4 N则为无机氮的主要存在形态 .马銮湾DIN的季节变化与叶绿素的变化呈明显的负相关关系 .作者认为改变现在养殖模式 ,将大大降低马銮湾的富营养化水平 .

In this paper, the chemical characteristics of inorganic nitrogen in Maluan Bay were discussed according to the survey results from May, September, November and December, 1998. The results showed that Maluan Bay was seriously polluted by inorganic nitrogen, and reached the eutrophication level. NO 3 N is a major species of inorganic nitrogen in the lower temperature seasons, and NH 4 N is a major species of inorganic nitrogen in the higher temperature seasons. The negative relationship between content of inorganic nitrogen and chlorophyll a was obvious. Therefore, the eutrophication level would be reduce by changed the mariculture model in Maluan Bay.