Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang estuary

doi:10.1016/j.ecss.2008.01.010

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	Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang estuary
	Shen, Zhiliang 1; Zhou, Shuqing 2; Pei, Shaofeng 1
刊名	ESTUARINE COASTAL AND SHELF SCIENCE
	2008-07-10
卷号	78 期号:3 页码:481-492
关键词	Phosphorus Silica Suspended Particulate Matter Transport Turbidity Maximum Zone China Changjiang (Yangtze) Estuary
ISSN号	0272-7714
DOI	10.1016/j.ecss.2008.01.010
文献子类	Article
英文摘要	The concentration of suspended particulate matter (SPM), sedimentation flux, and various forms of phosphorus and silica in turbidity maximum zone (TMZ) in the Changjiang (Yangtze) estuary was studied. Based on the budget of P and Si, their mass balances in the TMZ were calculated. Results show that the variation in concentration of dissolved inorganic silicon (DISi) was mainly controlled by seawater dilution, while that of dissolved inorganic phosphor-us (DIP) was considerably affected by the buffering of suspended matter and sediment. Our experiments showed that the sedimentation fluxes of SPM and particulate inorganic phosphorus (PIP), total particulate phosphorus (TPP), particulate inorganic silicon (PISi), and biological silicon (BSi) in the TMZ were 238.4 g m(-2) d(-1) and 28.3, 43.1, 79.0, 63.0 mg m(-2) d(-1), respectively. In addition, a simple method to estimate the ratio of resuspension of sediment in the TMZ was established, with which the rate in surface and bottom waters of the TMZ accounted for 55.7 and 66.1% of the total SPM, respectively, indicating that the sediment resuspension in the TMZ influenced significantly the mass balances of P and Si. Particulate adsorbed P (60.8%) and 35.5% of total particulate P discharged from the river were filtered and then deposited in the TMZ. The input flux of PIP from the river mouth was 55.9% of that of DIP, being important as biologically available P, while that of PISi was only 3.5% of DISi, showing that particulate adsorbed Si was much less important than particulate adsorbed P. (c) 2008 Elsevier Ltd. All rights reserved.; The concentration of suspended particulate matter (SPM), sedimentation flux, and various forms of phosphorus and silica in turbidity maximum zone (TMZ) in the Changjiang (Yangtze) estuary was studied. Based on the budget of P and Si, their mass balances in the TMZ were calculated. Results show that the variation in concentration of dissolved inorganic silicon (DISi) was mainly controlled by seawater dilution, while that of dissolved inorganic phosphor-us (DIP) was considerably affected by the buffering of suspended matter and sediment. Our experiments showed that the sedimentation fluxes of SPM and particulate inorganic phosphorus (PIP), total particulate phosphorus (TPP), particulate inorganic silicon (PISi), and biological silicon (BSi) in the TMZ were 238.4 g m(-2) d(-1) and 28.3, 43.1, 79.0, 63.0 mg m(-2) d(-1), respectively. In addition, a simple method to estimate the ratio of resuspension of sediment in the TMZ was established, with which the rate in surface and bottom waters of the TMZ accounted for 55.7 and 66.1% of the total SPM, respectively, indicating that the sediment resuspension in the TMZ influenced significantly the mass balances of P and Si. Particulate adsorbed P (60.8%) and 35.5% of total particulate P discharged from the river were filtered and then deposited in the TMZ. The input flux of PIP from the river mouth was 55.9% of that of DIP, being important as biologically available P, while that of PISi was only 3.5% of DISi, showing that particulate adsorbed Si was much less important than particulate adsorbed P. (c) 2008 Elsevier Ltd. All rights reserved.
学科主题	Marine & Freshwater Biology ; Oceanography
URL标识	查看原文
语种	英语
WOS记录号	WOS:000257084000003
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5375]
专题	海洋研究所_海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Shanghai Fishery Univ, Life Sci & Tech Coll, Shanghai 200090, Peoples R China
推荐引用方式 GB/T 7714	Shen, Zhiliang,Zhou, Shuqing,Pei, Shaofeng. Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang estuary[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2008,78(3):481-492.
APA	Shen, Zhiliang,Zhou, Shuqing,&Pei, Shaofeng.(2008).Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang estuary.ESTUARINE COASTAL AND SHELF SCIENCE,78(3),481-492.
MLA	Shen, Zhiliang,et al."Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang estuary".ESTUARINE COASTAL AND SHELF SCIENCE 78.3(2008):481-492.