Spatiotemporal distributions of nutrients in the downstream from Gezhouba Dam in Yangtze River, China

doi:10.1007/s11356-012-0791-6

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	Spatiotemporal distributions of nutrients in the downstream from Gezhouba Dam in Yangtze River, China
	Hu, Jun 1,2; Qiao, Ye 1,2; Zhou, Lianfeng 1,2; Li, Sixin 1,2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2012-08-01
卷号	19 期号:7 页码:2849-2859
关键词	Nitrogen Phosphorus Chl.a Water level Gezhouba Dam
ISSN号	0944-1344
DOI	10.1007/s11356-012-0791-6
英文摘要	From December 2008 to November 2009, an investigation of water quality was performed in the 70-km long downstream from Gezhouba Dam in Yangtze River. Twelve sites in all were chosen. Nine parameters of water quality including the total phosphorus, the total nitrogen, chlorophyll a (Chl.a), nitrite, nitrate, ammonia, water temperature, DO, and pH were monitored almost monthly. The multivariate statistical technique (cluster analysis) and the nonparametric method (Kruskal-Wallis Test and Spearman's rank correlation) were applied to evaluate the spatiotemporal variations of water quality data sets. According to the Chinese environmental quality standards for surface water (GB3838-2002), the water quality in the river section investigated can attain to the III water standards except total nitrogen. Further analysis indicated that there were no significant spatial differences in these parameters of water quality, but the sampling date had a significant effect. The temporal variation of water quality can be related to the discharge of Gezhouba Dam and moreover be affected by the reservoir regulation. During the discharge, the discharge increased the concentration of total phosphorus and then decreased the N:P ratio, which helps to the occurrence of algae blooms. The high consternation of phosphorus and the low N:P ratio show that the water body can be in the process of eutrophication during the discharge of Gezhouba Dam. In fact, Chl.a had begun to rise in the same period.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000306790200040
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/3877]
专题	中国科学院武汉植物园
通讯作者	Hu, Jun
作者单位	1.Minist Water Resources, Key Lab Ecol Effects Hydraul Engn & Restorat Aqua, Inst Hydroecol, Wuhan, Hubei Province, Peoples R China 2.Chinese Acad Sci, Wuhan, Hubei Province, Peoples R China
推荐引用方式 GB/T 7714	Hu, Jun,Qiao, Ye,Zhou, Lianfeng,et al. Spatiotemporal distributions of nutrients in the downstream from Gezhouba Dam in Yangtze River, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2012,19(7):2849-2859.
APA	Hu, Jun,Qiao, Ye,Zhou, Lianfeng,&Li, Sixin.(2012).Spatiotemporal distributions of nutrients in the downstream from Gezhouba Dam in Yangtze River, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,19(7),2849-2859.
MLA	Hu, Jun,et al."Spatiotemporal distributions of nutrients in the downstream from Gezhouba Dam in Yangtze River, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 19.7(2012):2849-2859.