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Environmental water body characteristics in a major tributary backwater of the unique and strongly seasonal Three Gorges Reservoir, China
Holbach, A.1; Bi, Y.2; Yuan, Y.2; Wang, L.3; Zheng, B.3; Norra, S.1,4
2015
Source PublicationENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
ISSN2050-7887
Volume17Issue:9Pages:1641-1653
AbstractEcological consequences of large dams, particularly regarding the Three Gorges Dam (TGD) on the Yangtze River in China, have been controversially and internationally discussed. Water quality within the Three Gorges Reservoir (TGR) has been deteriorated by highly underestimated eutrophication and algal blooms. Globally, the TGR is delineated from other comparable reservoirs by its low mean water residence time and its 30 m annual water level fluctuation. We used an in situ and online multi-sensor system 'MINIBAT' to analyse eight indicative physico-chemical parameters across depth and time within the Xiangxi River backwater, a representative major tributary of the TGR. The results revealed considerably changing environmental water body characteristics within the tributary backwater related to the TGR's typical seasonal hydrology. The Yangtze River main stream appeared to be the major contributor of dissolved and particulate water constituents within the Xiangxi River backwater. Eutrophication problems in spring and summer seasons are likely a consequence of extensive water mass exchange and pollutant transport processes in autumn and winter. In particular, the backwater's permanently stratified water column shows varying layered impacts of the Yangtze River main stream and Xiangxi River headwaters. This is a clear indication of a complex stratified flow pattern within this TGR tributary backwater. In our study, a major driver for the Yangtze River main stream impact was the rising TGR water level. The TGR's globally unique characteristics have thus become a central part of the recent eutrophication and pollution problem within the TGR. Thereof, we deduced a proposal for an adapted dam management strategy.
SubtypeArticle
DOI10.1039/c5em00201j
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS SubjectChemistry, Analytical ; Environmental Sciences
WOS IDWOS:000361146500011
WOS KeywordYANGTZE-RIVER ; XIANGXI BAY ; THERMAL STRUCTURE ; DANING RIVER ; ZONE ; BLOOMS
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27209
Collection藻类生物学及应用研究中心_期刊论文
Affiliation1.Karlsruhe Inst Technol, Inst Appl Geosci, D-76131 Karlsruhe, Germany
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
4.Karlsruhe Inst Technol, Inst Geog & Geoecol, D-76131 Karlsruhe, Germany
Recommended Citation
GB/T 7714
Holbach, A.,Bi, Y.,Yuan, Y.,et al. Environmental water body characteristics in a major tributary backwater of the unique and strongly seasonal Three Gorges Reservoir, China[J]. ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,2015,17(9):1641-1653.
APA Holbach, A.,Bi, Y.,Yuan, Y.,Wang, L.,Zheng, B.,&Norra, S..(2015).Environmental water body characteristics in a major tributary backwater of the unique and strongly seasonal Three Gorges Reservoir, China.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,17(9),1641-1653.
MLA Holbach, A.,et al."Environmental water body characteristics in a major tributary backwater of the unique and strongly seasonal Three Gorges Reservoir, China".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 17.9(2015):1641-1653.
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