Nutrient fluxes in the Changjiang River estuary and adjacent waters - a modified box model approach

doi:10.1007/s00343-015-4061-6

	Nutrient fluxes in the Changjiang River estuary and adjacent waters - a modified box model approach
	Wang Xiaohong 1,2,3; Yu Zhiming1 ; Fan Wei 4; Song Xiuxian1 ; Cao Xihua1 ; Yuan Yongquan1
	2015
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号	33 期号:1 页码:176-193
文章类型	Article
摘要	To solve nutrient flux and budget among waters with distinct salinity difference for water-salt-nutrient budget, a traditional method is to build a stoichiometrically linked steady state model. However, the traditional way cannot cope appropriately with those without distinct salinity difference that parallel to coastline or in a complex current system, as the results would be highly affected by box division in time and space, such as the Changjiang (Yangtze) River estuary (CRE) and adjacent waters (30.75 degrees-31.75 degrees N, 122 degrees 10'-123 degrees 20'E). Therefore, we developed a hydrodynamic box model based on the traditional way and the regional oceanic modeling system model (ROMS). Using data from four cruises in 2005, horizontal, vertical and boundary nutrient fluxes were calculated in the hydrodynamic box model, in which flux fields and the major controlling factors were studied. Results show that the nutrient flux varied greatly in season and space. Water flux outweighs the nutrient concentration in horizontal flux, and upwelling flux outweighs upward diffusion flux in vertical direction (upwelling flux and upward diffusion flux regions overlap largely all the year). Vertical flux in spring and summer are much greater than that in autumn and winter. The maximum vertical flux for DIP (dissolved inorganic phosphate) occurs in summer. Additional to the fluxes of the Changjiang River discharge, coastal currents, the Taiwan Warm Current, and the upwelling, nutrient flux inflow from the southern Yellow Sea and outflow southward are found crucial to nutrient budgets of the study area. Horizontal nutrient flux is controlled by physical dilution and confined to coastal waters with a little into the open seas. The study area acts as a conveyer transferring nutrients from the Yellow Sea to the East China Sea in the whole year. In addition, vertical nutrient flux in spring and summer is a main source of DIP. Therefore, the hydrodynamic ROMS-based box model is superior to the traditional one in estimating nutrient fluxes in a complicated hydrodynamic current system and provides a modified box model approach to material flux research.
关键词	Nutrient Box Model Hydrodynamic Changjiang (Yangtze) River Estuary
DOI	10.1007/s00343-015-4061-6
收录类别	SCI
语种	英语
WOS记录号	WOS:000351156200021
引用统计	被引频次：4[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/337002/25397
专题	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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wang Xiaohong,Yu Zhiming,Fan Wei,et al. Nutrient fluxes in the Changjiang River estuary and adjacent waters - a modified box model approach[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(1):176-193.
APA	Wang Xiaohong,Yu Zhiming,Fan Wei,Song Xiuxian,Cao Xihua,&Yuan Yongquan.(2015).Nutrient fluxes in the Changjiang River estuary and adjacent waters - a modified box model approach.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(1),176-193.
MLA	Wang Xiaohong,et al."Nutrient fluxes in the Changjiang River estuary and adjacent waters - a modified box model approach".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.1(2015):176-193.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Nutrient fluxes in t（2561KB）	期刊论文	出版稿	限制开放	ODC PDDL	浏览