福建省罗源湾生源要素分布及结构的研究

Research on distribution and structure of biogenic element in Luoyuan Bay in Fujian Province

通过2010年四个季节代表性月份对福建省罗源湾海域海水中生源要素的分布状况进行了4个航次调查,并对海域生源要素结构和对浮游植物的限制情况进行了讨论和分析。结果表明:罗源湾营养盐平面分布均呈自湾顶向外口递减的趋势。N、P、Si三种营养盐的最低水平均出现在夏季,但PO4-P的最高水平出现在冬季,SiO3-Si和DIN的最高水平均出现在春季。罗源湾春、秋、冬三个季节均不存在生源要素的限制情况,但春季PO4-P的消耗速度明显快于其它营养盐,以至于其在夏季于湾中部成为限制性因子。

Based on the survey carried in four seasons in Luoyuan Bay in 2010, the nutrient samples were retrieved and analyzed. The nutrient distribution and structure was also studied and discussed. The results showed that： The distribution of nutrient is descending the trend in off-shore direction. DIN, PO4-P and SiO3 -Si showed the lowest level in summer, but PO4-P showed the highest level in winter, while DIN and SiO3 -Si showed the highest level in spring. The nutrient limitation was not found in spring, autumn and winter, but in spring PO4-P was consumed so quickly. Compared with other kind of nutrient, it was exhausted and became the limitation factor