Seasonal and interannual variability of primary and export production in the South China Sea: a three-dimensional physical-biogeochemical model study

doi:10.1093/icesjms/fsn219

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	Seasonal and interannual variability of primary and export production in the South China Sea: a three-dimensional physical-biogeochemical model study
	Liu, Guimei 1,2; Chai, Fei 1; Chai, F, Univ Maine, Sch Marine Sci, 5706 Aubert Hall, Orono, ME 04469 USA
刊名	ICES JOURNAL OF MARINE SCIENCE
	2009-03-01
卷号	66 期号:2 页码:420-431
关键词	Export Flux Modelling Primary And New Production South China Sea
ISSN号	1054-3139
DOI	10.1093/icesjms/fsn219
文献子类	Article
英文摘要	To investigate the seasonal and interannual variations in biological productivity in the South China Sea (SCS), a Pacific basin-wide physical - biogeochemical model has been developed and used to estimate the biological productivity and export flux in the SCS. The Pacific circulation model, based on the Regional Ocean Model Systems (ROMS), is forced with daily air-sea fluxes derived from the NCEP (National Centers for Environmental Prediction) reanalysis between 1990 and 2004. The biogeochemical processes are simulated with a carbon, Si(OH)(4), and nitrogen ecosystem (CoSiNE) model consisting of silicate, nitrate, ammonium, two phytoplankton groups (small phytoplankton and large phytoplankton), two zooplankton grazers (small micrograzers and large mesozooplankton), and two detritus pools. The ROMS-CoSiNE model favourably reproduces many of the observed features, such as ChI a, nutrients, and primary production (PP) in the SCS. The modelled depth-integrated PP over the euphotic zone (0-125 m) varies seasonally, with the highest value of 386 mg C m (-2) d (-1) during winter and the lowest value of 156 mg C m (-2) d (-1) during early summer. The annual mean value is 196 mg C m (-2) d (-1). The model-integrated annual mean new production (uptake of nitrate), in carbon units, is 64.4 mg C m (-2) d (-1) which yields an f-ratio of 0.33 for the entire SCS. The modelled export ratio (e-ratio: the ratio of export to PP) is 0.24 for the basin-wide SCS. The year-to-year variation of biological productivity in the SCS is weaker than the seasonal variation. The large phytoplankton group tends to dominate over the smaller phytoplankton group, and likely plays an important role in determining the interannual variability of primary and new production.; To investigate the seasonal and interannual variations in biological productivity in the South China Sea (SCS), a Pacific basin-wide physical - biogeochemical model has been developed and used to estimate the biological productivity and export flux in the SCS. The Pacific circulation model, based on the Regional Ocean Model Systems (ROMS), is forced with daily air-sea fluxes derived from the NCEP (National Centers for Environmental Prediction) reanalysis between 1990 and 2004. The biogeochemical processes are simulated with a carbon, Si(OH)(4), and nitrogen ecosystem (CoSiNE) model consisting of silicate, nitrate, ammonium, two phytoplankton groups (small phytoplankton and large phytoplankton), two zooplankton grazers (small micrograzers and large mesozooplankton), and two detritus pools. The ROMS-CoSiNE model favourably reproduces many of the observed features, such as ChI a, nutrients, and primary production (PP) in the SCS. The modelled depth-integrated PP over the euphotic zone (0-125 m) varies seasonally, with the highest value of 386 mg C m (-2) d (-1) during winter and the lowest value of 156 mg C m (-2) d (-1) during early summer. The annual mean value is 196 mg C m (-2) d (-1). The model-integrated annual mean new production (uptake of nitrate), in carbon units, is 64.4 mg C m (-2) d (-1) which yields an f-ratio of 0.33 for the entire SCS. The modelled export ratio (e-ratio: the ratio of export to PP) is 0.24 for the basin-wide SCS. The year-to-year variation of biological productivity in the SCS is weaker than the seasonal variation. The large phytoplankton group tends to dominate over the smaller phytoplankton group, and likely plays an important role in determining the interannual variability of primary and new production.
学科主题	Fisheries ; Marine & Freshwater Biology ; Oceanography
URL标识	查看原文
语种	英语
WOS记录号	WOS:000263164000021
公开日期	2010-11-18
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/1799]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Chai, F, Univ Maine, Sch Marine Sci, 5706 Aubert Hall, Orono, ME 04469 USA
作者单位	1.Univ Maine, Sch Marine Sci, Orono, ME 04469 USA 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Liu, Guimei,Chai, Fei,Chai, F, Univ Maine, Sch Marine Sci, 5706 Aubert Hall, Orono, ME 04469 USA. Seasonal and interannual variability of primary and export production in the South China Sea: a three-dimensional physical-biogeochemical model study[J]. ICES JOURNAL OF MARINE SCIENCE,2009,66(2):420-431.
APA	Liu, Guimei,Chai, Fei,&Chai, F, Univ Maine, Sch Marine Sci, 5706 Aubert Hall, Orono, ME 04469 USA.(2009).Seasonal and interannual variability of primary and export production in the South China Sea: a three-dimensional physical-biogeochemical model study.ICES JOURNAL OF MARINE SCIENCE,66(2),420-431.
MLA	Liu, Guimei,et al."Seasonal and interannual variability of primary and export production in the South China Sea: a three-dimensional physical-biogeochemical model study".ICES JOURNAL OF MARINE SCIENCE 66.2(2009):420-431.