夏季东、黄海群落净生产力的分布及影响因素

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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

Received: 24 May 2023

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X145

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	WU Zhi-guang
	QIN Chuan
	WANG Lei
	ZHANG Gui-ling

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WU Zhi-guang,QIN Chuan,WANG Lei等. Distribution and influencing factors of net community production in the East China Sea and Yellow Sea in summer[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(1): 310-318.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I1/310

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