Articles | Volume 15, issue 6
https://doi.org/10.5194/bg-15-1775-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-15-1775-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Carbon dioxide emissions from the flat bottom and shallow Nam Theun 2 Reservoir: drawdown area as a neglected pathway to the atmosphere
Chandrashekhar Deshmukh
Géosciences Environnement Toulouse (GET),
Université de Toulouse (UPS), 14 Avenue E. Belin, 31400 Toulouse,
France
Laboratoire d'Aérologie, Université de Toulouse,
CNRS UMR 5560, 14 Av. Edouard Belin, 31400, Toulouse,
France
Centre for Regulatory and Policy Research, TERI
University, New Delhi, India
now at: Asia Pacific Resources International Limited
(APRIL), Indonesia
Géosciences Environnement Toulouse (GET),
Université de Toulouse (UPS), 14 Avenue E. Belin, 31400 Toulouse,
France
IRD, UR 234, GET, 14 Avenue E. Belin, 31400, Toulouse,
France
Departamento de Geoquimica, Universidade Federal
Fluminense, Niterói, Brasil
Axay Vongkhamsao
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
Sylvie Pighini
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
now at: Innsbruck University, Institute of Ecology, 15
Sternwartestrasse, 6020 Innsbruck, Austria
now at: Foundation Edmund Mach,
FOXLAB-FEM, Via E. Mach 1, 38010 San Michele all'Adige,
Italy
Phetdala Oudone
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
now at: Department of Environmental Science, Faculty of
Environmental Sciences, National University of Laos, Vientiane, Lao
PDR
Saysoulinthone Sopraseuth
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
Arnaud Godon
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
now at: Arnaud Godon Company, 44 Route de Genas, Nomade
Lyon, 69003 Lyon, France
Wanidaporn Rode
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
Pierre Guédant
Nam Theun 2 Power Company Limited (NTPC), Environment &
Social Division, Water Quality and Biodiversity Dept., Gnommalath Office,
P.O. Box 5862, Vientiane, Lao PDR
Priscia Oliva
Géosciences Environnement Toulouse (GET),
Université de Toulouse (UPS), 14 Avenue E. Belin, 31400 Toulouse,
France
Stéphane Audry
Géosciences Environnement Toulouse (GET),
Université de Toulouse (UPS), 14 Avenue E. Belin, 31400 Toulouse,
France
Cyril Zouiten
Géosciences Environnement Toulouse (GET),
Université de Toulouse (UPS), 14 Avenue E. Belin, 31400 Toulouse,
France
Corinne Galy-Lacaux
Laboratoire d'Aérologie, Université de Toulouse,
CNRS UMR 5560, 14 Av. Edouard Belin, 31400, Toulouse,
France
Henri Robain
IRD, iEES-Paris, Centre IRD France-Nord, 32 avenue Henri
Varagnat, 93143 Bondy CEDEX, France
Olivier Ribolzi
Géosciences Environnement Toulouse (GET),
Université de Toulouse (UPS), 14 Avenue E. Belin, 31400 Toulouse,
France
Arun Kansal
Centre for Regulatory and Policy Research, TERI
University, New Delhi, India
Vincent Chanudet
Electriciteì de France, Hydro Engineering Centre,
Sustainable Development Dpt., Savoie Technolac, 73373 Le Bourget du Lac,
France
Stéphane Descloux
Electriciteì de France, Hydro Engineering Centre,
Sustainable Development Dpt., Savoie Technolac, 73373 Le Bourget du Lac,
France
Dominique Serça
Laboratoire d'Aérologie, Université de Toulouse,
CNRS UMR 5560, 14 Av. Edouard Belin, 31400, Toulouse,
France
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Cited
18 citations as recorded by crossref.
- Underestimated methane production triggered by phytoplankton succession in river-reservoir systems: Evidence from a microcosm study H. Xu et al. 10.1016/j.watres.2020.116233
- Reviews and syntheses: Anthropogenic perturbations to carbon fluxes in Asian river systems – concepts, emerging trends, and research challenges J. Park et al. 10.5194/bg-15-3049-2018
- CO2 emissions from hydroelectric reservoirs in the Tigris River basin, a semi-arid region of southeastern Turkey M. Varol 10.1016/j.jhydrol.2019.01.002
- Retracted: Visualization of Low-Permeability Natural Core Carbon Dioxide Immiscible Flooding Flow Characteristics J. Chi et al. 10.1109/ACCESS.2020.3007782
- Juxtaposing the spatiotemporal drivers of sediment CO2, CH4, and N2O effluxes along ecoregional, wet-dry, and diurnal gradients P. Ertürk Arı et al. 10.1016/j.apr.2021.03.002
- Emissions from dry inland waters are a blind spot in the global carbon cycle R. Marcé et al. 10.1016/j.earscirev.2018.11.012
- Knowledge domain of greenhouse gas emissions from hydropower reservoirs: Hotspots, frontiers and future perspectives Y. Ai et al. 10.3389/fenvs.2022.1055891
- Year-round CO2 emissions from the drawdown area of a tropical reservoir: Strong seasonal and spatial variation Í. Barbosa et al. 10.1016/j.geoderma.2024.116891
- Wetland methane emissions dominated by plant‐mediated fluxes: Contrasting emissions pathways and seasons within a shallow freshwater subtropical wetland L. Jeffrey et al. 10.1002/lno.11158
- Divergent contributions of microbes and plants to soil organic carbon in the drawdown area of a large reservoir: Impacts of periodic flooding and drying S. Zhang et al. 10.1016/j.jenvman.2024.122949
- Carbon dioxide emission from drawdown areas of a Brazilian reservoir is linked to surrounding land cover R. Almeida et al. 10.1007/s00027-019-0665-9
- The drawdown phase of dam decommissioning is a hot moment of gaseous carbon emissions from a temperate reservoir M. Amani et al. 10.1080/20442041.2022.2096977
- Carbon dioxide flux in the drained drawdown areas of Three Gorges Reservoir L. Yang et al. 10.3389/fenvs.2022.1015888
- Global inland water greenhouse gas (GHG) geographical patterns and escape mechanisms under different water level Y. Gao et al. 10.1016/j.watres.2024.122808
- Modeling the spatial and temporal variability in surface water CO2 and CH4 concentrations in a newly created complex of boreal hydroelectric reservoirs F. Rust et al. 10.1016/j.scitotenv.2021.152459
- Global carbon budget of reservoirs is overturned by the quantification of drawdown areas P. Keller et al. 10.1038/s41561-021-00734-z
- Impact of dam decommissioning on greenhouse gas emissions from a reservoir: An example from the Inner Mongolia grassland region, China W. Liang et al. 10.1016/j.jhydrol.2024.130750
- Cross-continental importance of CH4 emissions from dry inland-waters J. Paranaíba et al. 10.1016/j.scitotenv.2021.151925
18 citations as recorded by crossref.
- Underestimated methane production triggered by phytoplankton succession in river-reservoir systems: Evidence from a microcosm study H. Xu et al. 10.1016/j.watres.2020.116233
- Reviews and syntheses: Anthropogenic perturbations to carbon fluxes in Asian river systems – concepts, emerging trends, and research challenges J. Park et al. 10.5194/bg-15-3049-2018
- CO2 emissions from hydroelectric reservoirs in the Tigris River basin, a semi-arid region of southeastern Turkey M. Varol 10.1016/j.jhydrol.2019.01.002
- Retracted: Visualization of Low-Permeability Natural Core Carbon Dioxide Immiscible Flooding Flow Characteristics J. Chi et al. 10.1109/ACCESS.2020.3007782
- Juxtaposing the spatiotemporal drivers of sediment CO2, CH4, and N2O effluxes along ecoregional, wet-dry, and diurnal gradients P. Ertürk Arı et al. 10.1016/j.apr.2021.03.002
- Emissions from dry inland waters are a blind spot in the global carbon cycle R. Marcé et al. 10.1016/j.earscirev.2018.11.012
- Knowledge domain of greenhouse gas emissions from hydropower reservoirs: Hotspots, frontiers and future perspectives Y. Ai et al. 10.3389/fenvs.2022.1055891
- Year-round CO2 emissions from the drawdown area of a tropical reservoir: Strong seasonal and spatial variation Í. Barbosa et al. 10.1016/j.geoderma.2024.116891
- Wetland methane emissions dominated by plant‐mediated fluxes: Contrasting emissions pathways and seasons within a shallow freshwater subtropical wetland L. Jeffrey et al. 10.1002/lno.11158
- Divergent contributions of microbes and plants to soil organic carbon in the drawdown area of a large reservoir: Impacts of periodic flooding and drying S. Zhang et al. 10.1016/j.jenvman.2024.122949
- Carbon dioxide emission from drawdown areas of a Brazilian reservoir is linked to surrounding land cover R. Almeida et al. 10.1007/s00027-019-0665-9
- The drawdown phase of dam decommissioning is a hot moment of gaseous carbon emissions from a temperate reservoir M. Amani et al. 10.1080/20442041.2022.2096977
- Carbon dioxide flux in the drained drawdown areas of Three Gorges Reservoir L. Yang et al. 10.3389/fenvs.2022.1015888
- Global inland water greenhouse gas (GHG) geographical patterns and escape mechanisms under different water level Y. Gao et al. 10.1016/j.watres.2024.122808
- Modeling the spatial and temporal variability in surface water CO2 and CH4 concentrations in a newly created complex of boreal hydroelectric reservoirs F. Rust et al. 10.1016/j.scitotenv.2021.152459
- Global carbon budget of reservoirs is overturned by the quantification of drawdown areas P. Keller et al. 10.1038/s41561-021-00734-z
- Impact of dam decommissioning on greenhouse gas emissions from a reservoir: An example from the Inner Mongolia grassland region, China W. Liang et al. 10.1016/j.jhydrol.2024.130750
- Cross-continental importance of CH4 emissions from dry inland-waters J. Paranaíba et al. 10.1016/j.scitotenv.2021.151925
Discussed (final revised paper)
Latest update: 14 Dec 2024
Short summary
Based on an intense monitoring of CO2 concentrations and organic and inorganic carbon in the reservoir, in the rivers upstream and downstream, and of CO2 emissions from the drawdown area, we confirmed the importance of the flooded stock of organic matter as a source of C fueling emissions and we show that the drawdown area contributes, depending on the year, from 50 to 75 % of total annual gross emissions in the flat and shallow Nam Theun 2 Reservoir.
Based on an intense monitoring of CO2 concentrations and organic and inorganic carbon in the...
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