IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Assessing Water Quality of Three Gorges Reservoir, China, Over a Five-Year Period From 2006 to 2011
Zhao, Pei; Tang, Xiangyu; Tang, Jialiang; Wang, Chao
Corresponding AuthorJialiang Tang(唐家良)
2013
Source PublicationWATER RESOURCES MANAGEMENT
ISSN0920-4741
EISSN1573-1650
Volume27Issue:13Pages:4545-4558
SubtypeArticle
AbstractUnderstanding temporal variability in water quality in the Three Gorges Reservoir (TGR) is crucial for evaluating environmental effects of damming and protecting China's largest freshwater resource. This study examined water quality changes in the main channel of the Yangtze River after dam completion as well as its relationship with water level fluctuation (WLF), controlled by annual impoundment operations and conditioned by flooding. Finally, the mass balance budget and integrative water quality indexing (WQI) methods were applied to elucidate the status of overall water quality since dam completion. Results showed that TGR outlet water (Yichang) exhibited higher pH and CODMn values and lower concentrations of dissolved oxygen (DO) and ammonia nitrogen (NH3-N) than inlet water (Zhutuo). Temporal variations in water quality parameters displayed similar trends for the outlet and inlet. Water quality parameters all showed negative correlations to water level, revealing the different effects of damming on water quality. It was estimated that reservoir impoundment led to a DO depletion of 1495.5 (+/- 1482.0) x 10(3) tons/yr and a CODMn increase of 564.0 (+/- 405.0) x 10(3) tons/yr, likely deriving from various internal pollutant loads from the WLF zone and tributary watersheds. According to WQI, TGR water quality remained at healthy levels. However, WQI linear regression showed that water quality at the outlet significantly decreased over time, indicating that the construction of the Three Gorges Dam generally caused water quality deterioration. Further investigation is required to determine the spatial distribution of point and non-point pollution sources and to identify major factors that influence TGR water quality.
KeywordInternal Release Water Level Fluctuation Water Quality Index Three Gorges Dam
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s11269-013-0425-x
WOS Subject ExtendedEngineering ; Water Resources
Indexed BySCI
WOS KeywordAFRICAN LAKE ; RIVER ; DAM ; IMPACT ; RELEASE ; INDEXES ; REGION ; AREA
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Civil ; Water Resources
WOS IDWOS:000324267000008
Funding OrganizationMinistry of Science and Technology of China(2012CB417101) ; National Natural Science Foundation of China(41101202 ; Chinese Academy of Sciences(724) ; 40801101)
Citation statistics
Cited Times:56[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6554
Collection山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhao, Pei,Tang, Xiangyu,Tang, Jialiang,et al. Assessing Water Quality of Three Gorges Reservoir, China, Over a Five-Year Period From 2006 to 2011[J]. WATER RESOURCES MANAGEMENT,2013,27(13):4545-4558.
APA Zhao, Pei,Tang, Xiangyu,Tang, Jialiang,&Wang, Chao.(2013).Assessing Water Quality of Three Gorges Reservoir, China, Over a Five-Year Period From 2006 to 2011.WATER RESOURCES MANAGEMENT,27(13),4545-4558.
MLA Zhao, Pei,et al."Assessing Water Quality of Three Gorges Reservoir, China, Over a Five-Year Period From 2006 to 2011".WATER RESOURCES MANAGEMENT 27.13(2013):4545-4558.
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