IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Water Chemistry Characteristics of Main Stream and Tributaries of Three Gorges Reservoir before 175m...
Water Chemistry Characteristics of Main Stream and Tributaries of Three Gorges Reservoir before 175m Water Storing
Author : Yuning Hong , Guoyou Li, Xiaohong Wan and Yuchun Wang
To protect water environment of the Three Gorges Reservoir (TGR) more effectively, with cluster analysis and factor analysis, this study analyzed water quality of samples collected from mainstream and estuaries, backwater zone and incoming water of tributaries in TGR before 175m water storing. As results show, mainstream could be divided into three areas in nutrients, including section from Cuntan to Zhongxian, from Zhongxian to Wushan and from Wushan to Maoping, with typical water quality factors of dissolved total nitrogen, nitrate nitrogen and nitrate nitrogen, respectively. Mainstream could be divided into four areas in inorganic ions, including section from Cuntan to Zhongxian, from Zhongxian to Tuokou, from Tuokou to Wushan and from Wushan to Maoping, with typical water quality - + 2+ + factors of F?Na?Ca and Na , respectively. Incoming water of tributaries could be divided into two areas in nutrient, including tributaries in section from Chongqing to Wushan, from Wushan to Zigui, with typical water quality factors of dissolved total nitrogen and total phosphorus, respectively. Incoming water of tributaries could be divided into two areas in inorganic ions, including tributaries in section from + 2+ Chongqing to Wushan, from Wushan to Zigui, with typical water quality factors of K and Mg , respectively. Backwater zones of tributaries in TGR could be divided into three categories in nutrients and ions, while the backwater zone of Zhuxi River and Daning River had special water quality characteristics. Branch estuaries of TGR could be recognized as three categories in inorganic ions and four categories in nutrients. In the direction of ?incoming water ? backwater zone - estuary?, the regional characteristics of branch water quality in TGR became weaker. The mainstream water quality has obvious influence on the water quality of backwater zone of tributaries in sections from Yunyang to Zigui and branch estuaries of the whole TGR.
File Size : 452,235 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 4 - HYDRO-ENVIRONMENT
Date Published : 18/07/2016
Download Now