| 摘要: |
| 1995年10月，在厦门市国家海洋局第三海洋研究所的陆基水池中，应用海洋围隔生态系实验技术，研究了在无海流、盐度等因子干扰的情况下，磷的形态、分布及其与浮游植物生物量的相关性。结果表明，海水中的可溶性无机磷（DIP）随时间里指数函数减少。浮游植物生物量主要与可溶性无机磷密切相关：[Chl－a]=A×e-B[PO4] ，这种相关的浮游植物生物量表现2d左右的滞后现象。还探讨了限制浮游植物增殖的DIP的最低浓度为0.3－0.4μmol/L，从DIP表现浓度估算浮游植物可能达到的最大生物量为[Chl－a]=10mg/m3，并由此估算出引发中肋骨条藻赤潮的DIP的阈值为1.2μmol/L，作为赤潮预测预报的参考。 |
| 关键词: 厦门西港 可溶性无机磷 赤潮 有害水华预测预报 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，39570145号;福建省自然科学基金资助项目，D94010号 |
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| STUDY ON THE PHOSPHORUS EXTREME VALUE WITH A HARMFUL DIATOM BLOOM OCCURRENCE IN WESTERN XIAMEN HABOUR |
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LIN Yu, LIN Rong-cheng
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Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005
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| Abstract: |
| An experimental enclosed marine ecosystem in a land-based tank on the shore of western Xiamen harbor was used to study the states and distribution of phosphorus and their relation with phytoplankton biomass under normal conditions of salinity and tidal current in Oct., 1995. The result shows that dissolved inorganic phosphorus (DIP) in seawater decreased exponentially with time and is closely related to phytoplanktonic biomass. A relationship: [Chl－a] = A×e－B[PO4] (A = 16.6; B = 1.37), was derived in this experiment. The phytoplanktonic biomass lagged DIP content by about 2 days. The lowest DIP concentration limiting phytoplanktonic multiplication was 0.3–0.4 μmol/L; the estimated maximum phytoplanktonic biomass ([Chl－a] = 10 mg/m3) could be produced from the external DIP concentration supplied, and the minimum DIP external concentration for occurrence of Skeletonema costtum harmful bloom is 1.2 μmol/L, a value which can serve as criterium for forecasting the harmful bloom of diatoms. |
| Key words: Western Xiamen habour, Dissolved inorganic phosphorus, Red tide, Harmful bloom forecast |
