夏季东、黄海群落净生产力的分布及影响因素

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摘要 2018年6~7月利用膜进样质谱系统对东、黄海表层海水中的O₂/Ar进行走航观测，估算了混合层群落净生产力（NCP），并结合其他水文参数和卫星数据分析NCP的分布特征和调控因素.结果表明：东、黄海整个调查海域Δ（O₂/Ar）平均值为（3.3 ±8.5）%，NCP平均值为（12.9 ±36.7） mmol C/（m²·d），整体处于净自养状态.东海混合层平均Δ（O₂/Ar）为（4.9 ±9.8）%，NCP为（21.0 ±38.2） mmol C/（m²·d），呈现近岸高远海低的分布特征，这主要是由于东海陆源输入带来的高营养盐促进浮游植物生长所致.黄海混合层平均Δ（O₂/Ar）为（1.6 ±6.6）%，NCP为（4.8 ±33.3） mmol C/（m²·d），黄海NCP分布主要受营养盐和黄海冷水团的影响，呈现北黄海高、南黄海低的分布特征.相关性分析表明，光照和营养盐是控制调查海区NCP分布的重要因素.

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	吴智广
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关键词 ： O₂/Ar, 群落净生产力, 东海, 黄海, 生物泵, 影响因素

Abstract：O₂/Ar in surface seawater of the East China Sea (ESC) and Yellow Sea (YS) was observed by an underway measurement system using membrane inlet mass spectrometry in June-July 2018, and estimated the NCP in the mixed layer. The NCP characteristics of distribution and its regulating factors were analyzed in combination with hydrographic parameters and satellite data. An overall autotrophic condition was observed in the ECS and YS with an average Δ(O₂/Ar) of (3.3 ±8.5)%, and an average NCP of (12.9 ±36.7) mmol C/(m²·d). The average Δ(O₂/Ar) was (4.9 ±9.8)% and the NCP was (21.0 ±38.2) mmol C/(m²·d) in the ECS, showing a trend of decreasing offshore, which was affected by the high growth of phytoplankton promoted by the massive nutrient from terrestrial input. The average Δ(O₂/Ar) was (1.6 ±6.6)% and the NCP was (4.8 ±33.3) mmol C/(m²·d) in the YS. The distribution of NCP in the YS was mainly influenced by nutrients and Yellow Sea Cold Water, with high values observed in the North Yellow Sea and low values in the South Yellow Sea. The correlation analysis showed that light and nutrients were the main factors controlling the distribution of NCP in the study area.

Key words： O₂/Ar net community production East China Sea Yellow Sea biological pump influencing factors

收稿日期: 2023-05-24

PACS:

X145

基金资助:国家自然科学基金资助项目（42176044和41776122）；国家自然科学基金联合基金项目（U1806211）

通讯作者: 张桂玲,教授,guilingzhang@ouc.edu.cn E-mail: guilingzhang@ouc.edu.cn

作者简介: 吴智广(1999-),男,山东泰安人,中国海洋大学硕士研究生,主要从事海洋群落净生产力的研究.wuzhiguang@stu.ouc.edu.cn.

引用本文:

吴智广, 秦川, 王磊, 张桂玲. 夏季东、黄海群落净生产力的分布及影响因素[J]. 中国环境科学, 2024, 44(1): 310-318. WU Zhi-guang, QIN Chuan, WANG Lei, ZHANG Gui-ling. Distribution and influencing factors of net community production in the East China Sea and Yellow Sea in summer. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(1): 310-318.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2024/V44/I1/310

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