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文章根据2011年5月和8月两个航次的调查资料,分析东山湾营养盐含量、分布、结构特征及其关键影响因子,并探讨了营养盐对浮游植物的限制情况。结果表明,除活性硅酸盐,夏季活性磷酸盐、总磷、无机氮和总氮含量均高于春季;春、夏活性硅酸盐、活性磷酸盐、总磷、无机氮和总氮分布整体呈现为漳江入海口和八尺门海域含量较高,其含量、分布主要受漳江陆源径流的影响,其次为浮游植物的消长;春季东山湾海域水体中N/P、Si/N、Si/P和TN/TP平均比值分别为64.3、9.1、583.1和13.4,夏季平均比值有所降低,分别为28.3、4.9、155.3和13.3;春季N/P、Si/N、Si/P、TN/TP高值区均位于湾口位置,而夏季N/P、Si/N、Si/P、TN/TP整体呈现以八尺门邻近海域为中心、自西向东扩散;2011年春、夏季均存在磷限制现象,春季尤为严重,磷限制的站位比例为83.3%。
Based on the survey data of two voyages in May and August 2011, the article analyzed the nutrient content, distribution, structural characteristics and key impact factors of Dongshan Bay, and discussed the limitation of nutrients to phytoplankton. The results showed that the content of active phosphate, total phosphorus, inorganic nitrogen and total nitrogen in summer were higher than that in spring except for active silicate. The distribution of spring silicate, active phosphate, total phosphorus, inorganic nitrogen and total nitrogen in spring and summer The contents of N, P, Si / N, Si in the waters of Dongshan Bay in spring were higher than those in the sea of Zhang Shanmen, the content and distribution were mainly affected by the runoff from the land of Zhangjiang River, followed by the growth and decline of phytoplankton. / P and TN / TP were 64.3, 9.1, 583.1 and 13.4, respectively. The average ratios in summer were decreased to 28.3, 4.9, 155.3 and 13.3, respectively. TP high value areas are located in the mouth of the bay, while the overall N / P, Si / N, Si / P and TN / TP in summer are diffused from west to east in the vicinity of Bachi Gate. The phenomenon is particularly serious in spring, with a P ratio of 83.3%.