CO 2 emissions from karst cascade hydropower reservoirs
Mechanisms and reservoir effect
Bibliographic Data
| ID | 15550663 |
|---|---|
| Authors | Wanfa Wang (0000-0001-8835-9808, Tianjin University), Si-Liang Li, Si‐Liang Li (0000-0002-0295-9675, Tianjin University, corresponding author), Jun Zhong (0000-0001-9553-0423, Tianjin University), Lichun Wang (0000-0002-0064-6608, Tianjin University), Hong Yang (0000-0003-1416-0526, University of Reading), Huayun Xiao (0000-0002-2369-9809, Tianjin University), Cong‐Qiang Liu (0000-0001-7451-0992, Tianjin University), Cong-Qiang Liu |
| Year | 2021 |
| Volume | 16 |
| Issue | 4 |
| Pages | 044013-044013 |
| Publication date | 2021-02-24 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/abe962 |
| OpenAlex | W3131956983 |
| Language | EN |
| References cited | 61 |
Carbon dioxide (CO 2 ) emissions from aquatic surface to the atmosphere has been recognized as a significant factor contributing to the global carbon budget and environmental change. The influence of river damming on the CO 2 emissions from reservoirs remains poorly constrained. This is hypothetically due to the change of hydraulic retention time (HRT) and thermal stratification intensity of reservoirs (related to the normal water level, NWL). To test this hypothesis, we quantified CO 2 fluxes and related parameters in eight karst reservoirs on the Wujiang River, Southwest China. Our results showed that there was a significant difference in the values of p CO 2 (mean = 3205.7 μ atm, SD = 2183.4 μ atm) and δ 13 C CO2 (mean = −18.9‰, SD = 1.6‰) in the cascade reservoirs, suggesting that multiple processes regulate CO 2 production. Moreover, the calculated CO 2 fluxes showed obvious spatiotemporal variations, ranging from −9.0 to 2269.3 mmol m −2 d −1 , with an average of 260.1 mmol m −2 d −1 . Interestingly, the CO 2 flux and δ 13 C CO2 from reservoirs of this study and other reservoirs around the world had an exponential function with the reservoir effect index ( R i , HRT/NWL), suggesting the viability of our hypothesis on reservoir CO 2 emission. This empirical function will help to estimate CO 2 emissions from global reservoirs and provide theoretical support for reservoir regulation to mitigate carbon emission
Atmospheric sciences · Carbon cycle · Carbon dioxide · Ecosystem · Flux (metallurgy · Hydrology (agriculture · Hydropower · Karst · Stratification (seeds · Chemistry · Environmental Science · Groundwater and Isotope Geochemistry · Karst Systems and Hydrogeology · Marine and coastal ecosystems · Ecology · Geology
Mapping the world’s free-flowing rivers
Lakes and reservoirs as regulators of carbon cycling and climate
Plumbing the Global Carbon Cycle
An index-based framework for assessing patterns and trends in river fragmentation and flow regulation by global dams at multiple scales
Greenhouse gas emissions of hydropower in the Mekong River Basin
| Citation velocity | historical |
|---|---|
| Highly cited | No |