Water quality variation and its conditioning factors in the Three Gorges Reservoir, China

The variation of water quality has been an issue of concern since the impoundment of the Three Gorges Reservoir (TGR). In this study, water samples from the TGR were collected in July and November 2015 and in May and July 2016 to reveal the variations of water quality and its key conditioning factor...

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Autores principales:	Xiaoxiao Wang, Haijian Bing, Yanhong Wu, Jun Zhou, He Zhu, Yong Wu, Hongyang Sun
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	heavy metals major ions rainfall three gorges reservoir water quality Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/fcb05e0a553448719f740918bb26c266
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id	oai:doaj.org-article:fcb05e0a553448719f740918bb26c266
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spelling	oai:doaj.org-article:fcb05e0a553448719f740918bb26c2662021-11-05T19:01:47ZWater quality variation and its conditioning factors in the Three Gorges Reservoir, China2040-22442408-935410.2166/wcc.2020.121https://doaj.org/article/fcb05e0a553448719f740918bb26c2662021-08-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/5/1694https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354The variation of water quality has been an issue of concern since the impoundment of the Three Gorges Reservoir (TGR). In this study, water samples from the TGR were collected in July and November 2015 and in May and July 2016 to reveal the variations of water quality and its key conditioning factors. The results showed that the concentrations of major ions, nutrients and heavy metals in the TGR's water body exhibited heterogeneous variations. Especially, the hotspot for major ions and heavy metals emerged at Chongqing downtown, and a decreasing trend from Chongqing toward the TGR dam was spatially observed. The heterogeneous variation of hydrochemistry in the TGR revealed the integrated influences of natural processes and human activities. Especially, the intense rainfall in the spring and early summer of 2016 promoted the transport of pollutants to the TGR, and further magnified the influence of large cities on the spatial variations of the hydrochemistry in the TGR. This study will give more insights into the change of water quality in large reservoirs in the context of the intense rainfall and the human activities. HIGHLIGHTS The spatial and seasonal variations of water quality indexes in the TGR were revealed.; The heterogeneous variations of the major ions and heavy metals revealed the integrated influences of natural processes and human activities.; The intensified rainfall promoted the pollutants transport and magnified large cities’ effects on the variations of the hydrochemistry in the TGR.;Xiaoxiao WangHaijian BingYanhong WuJun ZhouHe ZhuYong WuHongyang SunIWA Publishingarticleheavy metalsmajor ionsrainfallthree gorges reservoirwater qualityEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 5, Pp 1694-1707 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heavy metals major ions rainfall three gorges reservoir water quality Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	heavy metals major ions rainfall three gorges reservoir water quality Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Xiaoxiao Wang Haijian Bing Yanhong Wu Jun Zhou He Zhu Yong Wu Hongyang Sun Water quality variation and its conditioning factors in the Three Gorges Reservoir, China
description	The variation of water quality has been an issue of concern since the impoundment of the Three Gorges Reservoir (TGR). In this study, water samples from the TGR were collected in July and November 2015 and in May and July 2016 to reveal the variations of water quality and its key conditioning factors. The results showed that the concentrations of major ions, nutrients and heavy metals in the TGR's water body exhibited heterogeneous variations. Especially, the hotspot for major ions and heavy metals emerged at Chongqing downtown, and a decreasing trend from Chongqing toward the TGR dam was spatially observed. The heterogeneous variation of hydrochemistry in the TGR revealed the integrated influences of natural processes and human activities. Especially, the intense rainfall in the spring and early summer of 2016 promoted the transport of pollutants to the TGR, and further magnified the influence of large cities on the spatial variations of the hydrochemistry in the TGR. This study will give more insights into the change of water quality in large reservoirs in the context of the intense rainfall and the human activities. HIGHLIGHTS The spatial and seasonal variations of water quality indexes in the TGR were revealed.; The heterogeneous variations of the major ions and heavy metals revealed the integrated influences of natural processes and human activities.; The intensified rainfall promoted the pollutants transport and magnified large cities’ effects on the variations of the hydrochemistry in the TGR.;
format	article
author	Xiaoxiao Wang Haijian Bing Yanhong Wu Jun Zhou He Zhu Yong Wu Hongyang Sun
author_facet	Xiaoxiao Wang Haijian Bing Yanhong Wu Jun Zhou He Zhu Yong Wu Hongyang Sun
author_sort	Xiaoxiao Wang
title	Water quality variation and its conditioning factors in the Three Gorges Reservoir, China
title_short	Water quality variation and its conditioning factors in the Three Gorges Reservoir, China
title_full	Water quality variation and its conditioning factors in the Three Gorges Reservoir, China
title_fullStr	Water quality variation and its conditioning factors in the Three Gorges Reservoir, China
title_full_unstemmed	Water quality variation and its conditioning factors in the Three Gorges Reservoir, China
title_sort	water quality variation and its conditioning factors in the three gorges reservoir, china
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/fcb05e0a553448719f740918bb26c266
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Water quality variation and its conditioning factors in the Three Gorges Reservoir, China

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