Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Greenhouse gas emissions from hydropower reservoirs: emission processes and management approaches
Hydropower reservoirs, as vital inland waters bodies of anthropogenic origin, exhibit distinct characteristics from natural waters, thereby garnering research interest in the quantification and mapping of greenhouse gas (GHG) emissions. In this review, we systematically examine studies focusing on GHG emissions from hydropower reservoirs. We identify two key primary physical mechanisms resulting from river damming, namely water impoundment and water regulation, which can significantly influence GHG emissions in hydropower reservoirs. Reservoirs vary in size, with smaller reservoirs exhibiting higher CH _4 emissions per unit area. For instance, small reservoirs have an average flux rate of 327.54 mg C–CH _4 /m ^2 /day, while medium-sized reservoirs emit 267.12 mg C–CH _4 /m ^2 /day, and large ones emit 37.34 mg C–CH _4 /m ^2 /day. This difference is potentially attributable to shorter water residence times in small reservoirs and increased susceptibility to littoral disturbance. In addition to reservoir scale, variations in GHG emissions between reservoirs are also influenced by the type of hydropower. Run-of-river and closed-loop pumped storage hydropower (PSH) systems are anticipated to exhibit lower GHG emissions (PSH: 4.2–46.5 mg C–CH _4 /m ^2 /day) in comparison to conventional impoundment hydropower, owing to their operational characteristics, facilitating mixing and oxygenation within the reservoir water column and reducing sedimentation. Nonetheless, further field measurements are warranted. Through the integration of literature insights, we propose solutions aimed at managing emissions, considering both physical mechanisms and hydropower planning. Ultimately, these findings will advance our understanding of GHG emissions from hydropower reservoirs and facilitate sustainable carbon reduction management practices.
Greenhouse gas emissions from hydropower reservoirs: emission processes and management approaches
Hydropower reservoirs, as vital inland waters bodies of anthropogenic origin, exhibit distinct characteristics from natural waters, thereby garnering research interest in the quantification and mapping of greenhouse gas (GHG) emissions. In this review, we systematically examine studies focusing on GHG emissions from hydropower reservoirs. We identify two key primary physical mechanisms resulting from river damming, namely water impoundment and water regulation, which can significantly influence GHG emissions in hydropower reservoirs. Reservoirs vary in size, with smaller reservoirs exhibiting higher CH _4 emissions per unit area. For instance, small reservoirs have an average flux rate of 327.54 mg C–CH _4 /m ^2 /day, while medium-sized reservoirs emit 267.12 mg C–CH _4 /m ^2 /day, and large ones emit 37.34 mg C–CH _4 /m ^2 /day. This difference is potentially attributable to shorter water residence times in small reservoirs and increased susceptibility to littoral disturbance. In addition to reservoir scale, variations in GHG emissions between reservoirs are also influenced by the type of hydropower. Run-of-river and closed-loop pumped storage hydropower (PSH) systems are anticipated to exhibit lower GHG emissions (PSH: 4.2–46.5 mg C–CH _4 /m ^2 /day) in comparison to conventional impoundment hydropower, owing to their operational characteristics, facilitating mixing and oxygenation within the reservoir water column and reducing sedimentation. Nonetheless, further field measurements are warranted. Through the integration of literature insights, we propose solutions aimed at managing emissions, considering both physical mechanisms and hydropower planning. Ultimately, these findings will advance our understanding of GHG emissions from hydropower reservoirs and facilitate sustainable carbon reduction management practices.
Greenhouse gas emissions from hydropower reservoirs: emission processes and management approaches
Zilin Wang (Autor:in) / Faith Ka Shun Chan (Autor:in) / Meili Feng (Autor:in) / Matthew F Johnson (Autor:in)
2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Metadata by DOAJ is licensed under CC BY-SA 1.0
Hydropower - A Green Energy? Tropical Reservoirs and Greenhouse Gas Emissions
| Online Contents | 2009
ENVIRONMENT - Greenhouse gas emissions from hydropower reservoirs: A synthesis of knowledge
| Online Contents | 2011
Greenhouse Gas Emissions from Reservoirs
| Springer Verlag | 2011
Fluxes of greenhouse gases from hydropower dams reservoirs in Brazil
| British Library Conference Proceedings | 2006