Annual cycle of carbon, nitrogen and phosphorus in the Bohai Sea: A model study

doi:10.1016/j.csr.2007.01.015

IOCAS-IR > 海洋环流与波动重点实验室

	Annual cycle of carbon, nitrogen and phosphorus in the Bohai Sea: A model study
	Liu, Hao; Yin, Baoshu
	2007-06-01
发表期刊	CONTINENTAL SHELF RESEARCH
ISSN	0278-4343
卷号	27 期号:10-11 页码:1399-1407
文章类型	Article
摘要	The annual cycle of nutrient-phytoplankton dynamics in Bohai Sea (BS) is simulated using a coupled physical-biological model in this study. By comparison, the modeled seasonal variations of nutrients and primary productivity agree with observations rather well. Although the annual cycles of chlorophyll a and primary production are both characterized by a double-peak configuration, a structural difference is still apparent: the phytoplankton biomass reaches the highest value in spring while summer is characterized by the most productivity in the BS, which can be ascribed to the combined impact of seawater temperature and zooplankton-grazing pressure on the growth of algae. Based on the validated simulations, the annual budgets of carbon, nitrogen and phosphorus are estimated, and are about 0.82 mt C surplus, 39 kt N deficit and 12kt P surplus, respectively, implying that the BS ecosystem is somewhat nitrogen limited. The contribution of two external nutrient sources, namely river discharges and resuspended sediments, to the growth of algae is also examined numerically, and it is found that the influence of river-borne nutrients mainly concentrates in estuaries, whereas the reduction of sediment-borne nutrients may significantly inhibit the onset of algae bloom in the whole BS. (c) 2007 Elsevier Ltd. All rights reserved.; The annual cycle of nutrient-phytoplankton dynamics in Bohai Sea (BS) is simulated using a coupled physical-biological model in this study. By comparison, the modeled seasonal variations of nutrients and primary productivity agree with observations rather well. Although the annual cycles of chlorophyll a and primary production are both characterized by a double-peak configuration, a structural difference is still apparent: the phytoplankton biomass reaches the highest value in spring while summer is characterized by the most productivity in the BS, which can be ascribed to the combined impact of seawater temperature and zooplankton-grazing pressure on the growth of algae. Based on the validated simulations, the annual budgets of carbon, nitrogen and phosphorus are estimated, and are about 0.82 mt C surplus, 39 kt N deficit and 12kt P surplus, respectively, implying that the BS ecosystem is somewhat nitrogen limited. The contribution of two external nutrient sources, namely river discharges and resuspended sediments, to the growth of algae is also examined numerically, and it is found that the influence of river-borne nutrients mainly concentrates in estuaries, whereas the reduction of sediment-borne nutrients may significantly inhibit the onset of algae bloom in the whole BS. (c) 2007 Elsevier Ltd. All rights reserved.
关键词	Bohai Sea a Coupled Physical-biological Model Primary Productivity Carbon And Nutrient Budget
学科领域	Oceanography
DOI	10.1016/j.csr.2007.01.015
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000247849700002
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5220
专题	海洋环流与波动重点实验室
作者单位	Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Liu, Hao,Yin, Baoshu. Annual cycle of carbon, nitrogen and phosphorus in the Bohai Sea: A model study[J]. CONTINENTAL SHELF RESEARCH,2007,27(10-11):1399-1407.
APA	Liu, Hao,&Yin, Baoshu.(2007).Annual cycle of carbon, nitrogen and phosphorus in the Bohai Sea: A model study.CONTINENTAL SHELF RESEARCH,27(10-11),1399-1407.
MLA	Liu, Hao,et al."Annual cycle of carbon, nitrogen and phosphorus in the Bohai Sea: A model study".CONTINENTAL SHELF RESEARCH 27.10-11(2007):1399-1407.

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