Understanding transport and transformation of dissolved inorganic carbon (DIC) in the reservoir system using δ13CDIC and water chemistry.
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| Title: | Understanding transport and transformation of dissolved inorganic carbon (DIC) in the reservoir system using δ13CDIC and water chemistry. |
|---|---|
| Authors: | Wang, Wanfa1 (AUTHOR), Li, Si-Liang1,2 (AUTHOR) siliang.li@tju.edu.cn, Zhong, Jun1 (AUTHOR), Li, Cai1 (AUTHOR), Yi, Yuanbi1 (AUTHOR), Chen, Sainan1 (AUTHOR), Ren, Yimeng1 (AUTHOR) |
| Source: | Journal of Hydrology. Jul2019, Vol. 574, p193-201. 9p. |
| Subjects: | Water chemistry, Composition of water, Reservoirs, Water use, Water quality, Water |
| Geographic Terms: | China |
| Abstract: | • Using δ13C DIC and water chemistry to refine the sources and multiple processes in the waters. • A new model to understand migration and transformation of DIC in a karst river-reservoir system. • HRT is a key factor for carbon transportation and transformation in the reservoir. In order to advance our understanding of the driving factors controlling carbon dynamics and evolution of water quality in river-reservoir systems for the generation of hydropower, we conducted a study in a karst deep-water reservoir (Wujiangdu Reservoir), southwest China. Water samples were collected from the inflow/outflow of the Wujiangdu Reservoir, four vertical columns along the reservoir, and from three tributaries to the reservoir in January, April, July, and October 2017. The dissolved inorganic carbon (DIC) concentrations and carbon isotope composition (δ13C DIC) varied greatly (1.99–3.45 mmol/L and −10.7‰ to −6.0‰, respectively) and were controlled by multiple processes including CO 2 outgassing, primary production, and organic matter degradation. In the four vertical profiles, the difference between the values of samples with those at 15 m of Δ[DIC] and Δ[δ13C DIC ], Δ[DIC] and ΔCa2+ in the same water column had positive correlations, and the variation in dissolved O 2 , partial pressure of CO 2 , and flux of CO 2 suggested that primary production dominated above the epilimnion and degradation of OM dominated below the epilimnion during the warm season. Continuous CO 2 outgassing was found from riverine water to surface water of the reservoir before the dam based on carbon isotopic compositions and water chemistry. These processes would cause isotopic fractionation between the residual DIC and CO 2 (aqueous), the degree of which varied among different seasons (July > April > October > January). Carbon transport and biogeochemical processes were highly controlled by the hydraulic retention time (HRT) in the river-reservoir system. It was estimated that approximately 71.5% of the annual DIC flux was produced in the water column below 15 m depth during the study year, suggesting that the processes of DIC generation and consumption occurred at the same time. The results highlight that carbon behavior in the impounded rivers is influenced by multiple processes. The carbon transformation processes should be taken into account for improving the estimation accuracy of the carbon budget calculations and the management of water quality for river-reservoir systems. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Hydrology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 139240060 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Understanding transport and transformation of dissolved inorganic carbon (DIC) in the reservoir system using δ13CDIC and water chemistry. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Wanfa%22">Wang, Wanfa</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Si-Liang%22">Li, Si-Liang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> siliang.li@tju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhong%2C+Jun%22">Zhong, Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Cai%22">Li, Cai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yi%2C+Yuanbi%22">Yi, Yuanbi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Sainan%22">Chen, Sainan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ren%2C+Yimeng%22">Ren, Yimeng</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Hydrology%22">Journal of Hydrology</searchLink>. Jul2019, Vol. 574, p193-201. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Water+chemistry%22">Water chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Composition+of+water%22">Composition of water</searchLink><br /><searchLink fieldCode="DE" term="%22Reservoirs%22">Reservoirs</searchLink><br /><searchLink fieldCode="DE" term="%22Water+use%22">Water use</searchLink><br /><searchLink fieldCode="DE" term="%22Water+quality%22">Water quality</searchLink><br /><searchLink fieldCode="DE" term="%22Water%22">Water</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • Using δ13C DIC and water chemistry to refine the sources and multiple processes in the waters. • A new model to understand migration and transformation of DIC in a karst river-reservoir system. • HRT is a key factor for carbon transportation and transformation in the reservoir. In order to advance our understanding of the driving factors controlling carbon dynamics and evolution of water quality in river-reservoir systems for the generation of hydropower, we conducted a study in a karst deep-water reservoir (Wujiangdu Reservoir), southwest China. Water samples were collected from the inflow/outflow of the Wujiangdu Reservoir, four vertical columns along the reservoir, and from three tributaries to the reservoir in January, April, July, and October 2017. The dissolved inorganic carbon (DIC) concentrations and carbon isotope composition (δ13C DIC) varied greatly (1.99–3.45 mmol/L and −10.7‰ to −6.0‰, respectively) and were controlled by multiple processes including CO 2 outgassing, primary production, and organic matter degradation. In the four vertical profiles, the difference between the values of samples with those at 15 m of Δ[DIC] and Δ[δ13C DIC ], Δ[DIC] and ΔCa2+ in the same water column had positive correlations, and the variation in dissolved O 2 , partial pressure of CO 2 , and flux of CO 2 suggested that primary production dominated above the epilimnion and degradation of OM dominated below the epilimnion during the warm season. Continuous CO 2 outgassing was found from riverine water to surface water of the reservoir before the dam based on carbon isotopic compositions and water chemistry. These processes would cause isotopic fractionation between the residual DIC and CO 2 (aqueous), the degree of which varied among different seasons (July > April > October > January). Carbon transport and biogeochemical processes were highly controlled by the hydraulic retention time (HRT) in the river-reservoir system. It was estimated that approximately 71.5% of the annual DIC flux was produced in the water column below 15 m depth during the study year, suggesting that the processes of DIC generation and consumption occurred at the same time. The results highlight that carbon behavior in the impounded rivers is influenced by multiple processes. The carbon transformation processes should be taken into account for improving the estimation accuracy of the carbon budget calculations and the management of water quality for river-reservoir systems. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Hydrology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=139240060 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jhydrol.2019.04.036 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 193 Subjects: – SubjectFull: Water chemistry Type: general – SubjectFull: Composition of water Type: general – SubjectFull: Reservoirs Type: general – SubjectFull: Water use Type: general – SubjectFull: Water quality Type: general – SubjectFull: Water Type: general – SubjectFull: China Type: general Titles: – TitleFull: Understanding transport and transformation of dissolved inorganic carbon (DIC) in the reservoir system using δ13CDIC and water chemistry. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Wanfa – PersonEntity: Name: NameFull: Li, Si-Liang – PersonEntity: Name: NameFull: Zhong, Jun – PersonEntity: Name: NameFull: Li, Cai – PersonEntity: Name: NameFull: Yi, Yuanbi – PersonEntity: Name: NameFull: Chen, Sainan – PersonEntity: Name: NameFull: Ren, Yimeng IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 00221694 Numbering: – Type: volume Value: 574 Titles: – TitleFull: Journal of Hydrology Type: main |
| ResultId | 1 |
