THE VARIATION TREND OF NUTRIENT FLUX FROM YANGTZE RIVER AND RELATED IMPACT ON YANGTZE ESTUARY

	THE VARIATION TREND OF NUTRIENT FLUX FROM YANGTZE RIVER AND RELATED IMPACT ON YANGTZE ESTUARY
	Huang, G. X.1; Chen, Q. W.1; Cui, Y. P.1; Ye, F.1; Wang, B. D.2
	2012
英文摘要	Due to climate change and mankind actives, especially reservoirs' operation such as Three Gorge reservoirs (TGP) and pollutions from industry, agriculture and domestic sewage in the Yangtze River basin, the nutrient flux at Datong hydrological station has significant changes in recent years. Based on the data measured at Datong station in different period, the changing trend of nutrient flux including discharge, suspended solids (SS), total phosphorus (TP), total nitrogen (TN) are analyzed. Then a three-dimensional water quality model based partially on the open source code of Elfe, Wasp and EFDC are developed to simulate the C, N, P, Si cycling processes. The model is applied to the region from 120.6 degrees E to 124.5 degrees E and from 29.5 degrees N to 32.5 degrees N, including Yangtze estuary, Hangzhou bay and two important fishing grounds named Zhoushan and Lvsi. The upstream boundary condition at the Tianshenggang station in the 3D model are obtained by a 1D river water quality model which covers the region from Datong to Wusong using the related inflow at the Datong station. The downstream boundary conditions at open sea are given reasonably by a coarse grid model which including East China Sea. The measured data of Yangtze Estuary and Hangzhou Bay from 2004 to 2005 after TGP project are used to verify the model. The results show that the suspended sediment decreases continuously from annual value 4.6x10(8) to 2.6x10(8) in 2003 and then fall further to 1.3x10(8) ton in 2008. TP and TN have a rising trend because of increasing pollution load, especially from the middle and lower reach of Yangtze River in recent years. The variation of inflow flux of nutrient matter has great influence on the concentration of nutrients in the front of Yangtze delta where confluence region of Yangtze main inflow and upwelling from the out sea exists.
会议录	PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON APAC 2011
会议录出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
会议录出版地	PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE
语种	英语
资助项目	Scientific Support Plan of Jiangxi Province[2008BB25700]
WOS研究方向	Engineering
WOS记录号	WOS:000311609100124
WOS关键词	CHANGJIANG RIVER
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27393]
专题	自然资源部第一海洋研究所
通讯作者	Huang, G. X.
作者单位	1.Ecoenvironm Sci Res Ctr, State Key Lab Aquat Chem, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.State Ocean Adm, First Inst Oceanog, Key Lab Marine Ecolog Sci, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Huang, G. X.,Chen, Q. W.,Cui, Y. P.,et al. THE VARIATION TREND OF NUTRIENT FLUX FROM YANGTZE RIVER AND RELATED IMPACT ON YANGTZE ESTUARY[C]. 见:.