Geochemical forms and seasonal variations of phosphorus in surface sediments of the East China Sea shelf

doi:10.1016/j.jmarsys.2016.03.005

	Geochemical forms and seasonal variations of phosphorus in surface sediments of the East China Sea shelf
	Zhou, Fengxia 1,3; Gao, Xuelu 1,4; Yuan, Huamao 2; Song, Jinming2 ; Chen, Chen-Tung Arthur 4; Lui, Hon-Kit 4; Zhang, Yong 1
	2016-07-01
发表期刊	JOURNAL OF MARINE SYSTEMS
卷号	159 页码:41-54
文章类型	Article
摘要	Geochemical characteristics of phosphorus (P) in the surface sediments of the East China Sea shelf (ECSS) were studied in spring and autumn, 2014. Distributions, seasonal variations, transformations and their influencing factors were discussed. Besides, burial fluxes of P in different seasons were also calculated. Five operationally defined forms of P, namely exchangeable or loosely sorbed P (Ads-P), iron-bound P (Fe-P), authigenic P (Au-P), detrital apatite plus other inorganic P (De-P) and organic P (OP), were obtained using a sequential extraction procedure. Generally, the concentrations of Ads-P, Fe-P, Au-P and OP decreased seaward and the concentrations of De-P increased seaward in both seasons. In spring, the average concentrations of Ads-P, Fe-P, Au-P, De-P and OP were 13.8 +/- 5.0, 21.9 +/- 7.6, 148.5 +/- 44.5, 153.1 +/- 55.8 and 91.7 +/- 21.5 mu g g(-1), respectively. The corresponding concentrations in autumn were 11.4 +/- 4.3, 20.0 +/- 10.9, 170.4 +/- 53.6, 225.6 +/- 101.7 and 77.1 +/- 319 mu g g(-1), respectively. The average percentages of P fractions in total P (TP) in spring and autumn were both in the order: De-P> Au-P> OP > Fe-P > Ads-P. The average concentrations of Bio-available P (Bio-P) were 127.4 +/- 31.4 mu g g(-1) in spring and 108.5 +/- 47.2 mu g g(-1) in autumn, accounting for 29.8% +/- 73% and 21.5% +/- 82% of corresponding TP, respectively. Seasonal variations of the primary production, hydrodynamic conditions, hypoxia and other environmental conditions were responsible for the seasonal variations of different phosphorus forms. The calculation of burial fluxes reflected that, in most parts of the studied area, TP had relative high burial fluxes in autumn, while Bio-P had relatively high burial fluxes in spring. The burial fluxes of other phosphorus forms also showed different seasonal variations in different parts of the studied area. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Sequential Extraction Sediment Analysis Nutrient Geochemistry Spatial And Temporal Distribution
DOI	10.1016/j.jmarsys.2016.03.005
收录类别	SCI
语种	英语
WOS记录号	WOS:000375506200004
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/131028
专题	海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan
推荐引用方式 GB/T 7714	Zhou, Fengxia,Gao, Xuelu,Yuan, Huamao,et al. Geochemical forms and seasonal variations of phosphorus in surface sediments of the East China Sea shelf[J]. JOURNAL OF MARINE SYSTEMS,2016,159:41-54.
APA	Zhou, Fengxia.,Gao, Xuelu.,Yuan, Huamao.,Song, Jinming.,Chen, Chen-Tung Arthur.,...&Zhang, Yong.(2016).Geochemical forms and seasonal variations of phosphorus in surface sediments of the East China Sea shelf.JOURNAL OF MARINE SYSTEMS,159,41-54.
MLA	Zhou, Fengxia,et al."Geochemical forms and seasonal variations of phosphorus in surface sediments of the East China Sea shelf".JOURNAL OF MARINE SYSTEMS 159(2016):41-54.

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