| Model study on Bohai ecosystem 2.Annual cycle of nutrient-phytoplankton dynamics |
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| 作者姓名： | LIU Hao YIN Baoshu |
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| 作者单位： | LIU Hao~ 1，2*，YIN Baoshu~ 1 1.Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China 2.Department of Oceanography，Xiamen University，Xiamen 361005，China |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 1 IntroductionNitrogen and phosphorus together constitute thematerial basis used by phytoplankton for photosyn-thesis; however, if the ratio of nitrogen atomic massto phosphorus atomic mass in an aquatic environmentmarkedly deviates, whether above or bell…
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| 关 键 词： | 渤海 生态系统 叶绿素 浮游植物 营养限制 年周期 藻类水华 |
| 收稿时间： | 2005-11-18 |
| 修稿时间： | 2006-02-08 |
Model study on Bohai ecosystem 2.Annual cycle of nutrient-phytoplankton dynamics |
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| LIU Hao,YIN Baoshu.Model study on Bohai ecosystem 2.Annual cycle of nutrient-phytoplankton dynamics[J].Acta Oceanologica Sinica,2006,25(5):74-91. |
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| Authors: | LIU Hao and YIN Baoshu |
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| Institution: | 1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Department of Oceanography, Xiamen University, Xiamen 361005, China2.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: | Using the coupled bio-physical model described in the first paper of this series of studies, the annual variations of algae biomass and nutrient concentration in the Bohai Sea are simulated. Modeled results show that the onset of spring bloom is induced by high nutrient stocks stored in winter, though the initial time is earlier in shallow waters than in deep waters, for which the evolution of the vertical stratification in deep waters plays an important role; on the other hand, newly added river-borne nutrients and resuspending sediment-borne nutrients are responsible for the outburst of autumn blooms. On the basis of modeled results, it is also found that the BS ecosystem, as a whole, is limited by nitrogen all the year round, though the phosphorus limitation is apparent in the Laizhou Bay where the ratio of nitrogen concentration to phosphorus concentration is higher than 16 due to the contribution of newly added nutrient species from Huanghe River discharges. |
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| Keywords: | Bohai Sea chlorophyll-a algae bloom nutrient limitation |
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