| 鼠尾藻（Sargassum thunbergii）固碳能力对流速的响应 |
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| 引用本文： | 赵志方,秦松,刘正一,唐君玮,肖圣志,钟志海.鼠尾藻（Sargassum thunbergii）固碳能力对流速的响应[J].海洋学报,2022,44(2):113-122. |
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| 作者姓名： | 赵志方 秦松 刘正一 唐君玮 肖圣志 钟志海 |
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| 作者单位： | 1.中国科学院烟台海岸带研究所 海岸带生物学与生物资源利用重点实验室，山东 烟台 264003 |
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| 基金项目： | 国家自然科学青年基金(42006110);烟台市科技计划(2020MSGY058);山东省自然科学青年基金(ZR2019QD017);山东省重点研发计划(国际科技合作)(2019GHZ026);2020年度山东省重点扶持区域引进急需紧缺人才项目。 |
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| 摘 要： | 流动的海水可以为海藻的生长提供所需的营养物质，对其生长和繁殖起到了非常重要的作用，而当前的生理生态学模拟实验，大多忽略了这一重要的环境因子。大型海藻虽然被认为是第4类“蓝碳”，但关于其固碳能力的研究较少。本研究设计了一种可以调节流速的大型海藻固碳能力测量系统，既可以测量大型海藻的净光合速率、呼吸速率和对无机氮、无机磷的吸收速率，也可以测量可溶性有机碳的释放速率。结果显示，与静止（0 m/s）相比，中流速（0.033 m/s）和高流速（0.094 m/s）均能提高鼠尾藻的净光合速率、净初级生产力、可溶性有机碳释放速率以及对无机氮、无机磷的吸收速率，且最大值均出现在高流速下。此外，鼠尾藻的可溶性有机碳释放速率随净初级生产力的提高而提高。本测量系统可为大型海藻固碳能力的研究提供切实可行的参考。
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| 关 键 词： | 大型海藻 鼠尾藻 净光合速率 净初级生产力 可溶性有机碳 可溶性无机氮 可溶性无机磷 |
| 收稿时间： | 2021-07-29 |
Response of carbon sequestration capacity of Sargassum thunbergii to water flow speed |
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| Zhao Zhifang,Qin Song,Liu Zhengyi,Tang Junwei,Xiao Shengzhi,Zhong Zhihai.Response of carbon sequestration capacity of Sargassum thunbergii to water flow speed[J].Acta Oceanologica Sinica (in Chinese),2022,44(2):113-122. |
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| Authors: | Zhao Zhifang Qin Song Liu Zhengyi Tang Junwei Xiao Shengzhi Zhong Zhihai |
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| Institution: | (Key Laboratory of Coastal Biology and Bio-Resource Utilization,Yantai Institute of Coastal Zone Research,Chinese Academy of Sci-ences,Yantai 264003,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China;School of Re-sources and Environment,University of Chinese Academy of Sciences,Beijing 101407,China;Long Island Comprehensive Experimental Zone Marine Economic Promotion Center,Yantai 264003,China;Changdao Dongyuan Seafood Co.Ltd,Yantai 264003,China) |
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| Abstract: | The flowing seawater can provide the nutrients for the growth of marine plants, which plays a vital role in the growth and reproduction of marine plants. However, most of the current simulation physiological and ecological experiments ignored this important environmental factor. Although macroalgae is regarded as the emerging fourth category of “blue carbon”, there are few studies on its carbon sequestration. In this study, we design a carbon sequestration capacity measurement system of macroalgae that can adjust the flow speed, which can not only measure the photosynthetic rate, respiratory rate and the absorption rate of dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP), but also measure the release rate of dissolved organic carbon (DOC) of macroalgae. The results show that the net photosynthetic rate, net primary productivity, DOC release rate and the absorption rate of DIN and DIP of Sargassum thunbergii are increased at medium (0.033 m/s) and high (0.094 m/s) flow speed compared with static status (0 m/s), and the highest values are obtained under high flow speed (0.094 m/s). In addition, the DOC release rate of S. thunbergii increased with the increase of the net primary productivity. This measurement system can provide a practical reference for the study of carbon sequestration capacity of macroalgae. |
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| Keywords: | macroalgae Sargassum thunbergii net photosynthetic rate net primary productivity dissolved organic carbon dissolved inorganic nitrogen dissolved inorganic phosphorus |
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