【摘 要】
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Nitrogen is essential element for all the life and the availability of nitrogen limits biological production in much of the world ocean.In north basin of South China sea,a subtropical oligotrophic mar
【机 构】
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State Key Laboratory of Marine Environmental Science,Xiamen University,Xiamen,China
【出 处】
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“南海深海过程演变”重大研究技术2014年度学术研讨会
论文部分内容阅读
Nitrogen is essential element for all the life and the availability of nitrogen limits biological production in much of the world ocean.In north basin of South China sea,a subtropical oligotrophic marginal sea,the DIN:SRP ratio in euphotic zone is always smaller than the Redfield N/P ratio of 16:1,typically state of a N-limitation aquatic system.Prochlorococcus is dominated total autotrophic biomass during stratification summer,while in well mixed winter shift to Synechococcus and picoeukaryotes.Previously bulk primary production and nitrogen based new production result suggesting that nitrate supplied from deep water is the main part of nitrogen source for phytoplankton growth in cold season while the regenerate nitrogen is the dominate source in warm season.
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