Estimation on net carbon emission from organic carbon transport caused by Three Gorges Dam
XING Ran1, QIN Bo-qiang2, BAO Yu-fei3, DAI Jiang-yu4, ZENG Chen-jun5, ZHU Lin1, SHI Wen-qing1
1. College of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China; 2. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; 3. China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China; 4. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China; 5. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510635, China
Abstract：In order to quantify net carbon emissions from the Three Gorges Reservoir, China, this study clarified carbon biogeochemical cycles, and estimated carbon emissions during organic carbon (OC) transport along Yangtze River in the scenarios with and without Three Gorges Dam. Results demonstrated that Three Gorges Dam doesn’t increase but decreases carbon emissions by (23.24 ±1.05)%. Three Gorges Dam redistributes OC and transfers the hot spots of OC decomposition and carbon emissions from Yangtze River estuary to Three Gorges Reservoir. In the reservoir, the effective OC burial decreases net carbon emissions, although anoxic conditions enhance methane production.
邢冉, 秦伯强, 包宇飞, 戴江玉, 曾晨军, 朱琳, 施文卿. 三峡水库淤沙净碳排放量核算[J]. 中国环境科学, 2023, 43(4): 1930-1936.
XING Ran, QIN Bo-qiang, BAO Yu-fei, DAI Jiang-yu, ZENG Chen-jun, ZHU Lin, SHI Wen-qing. Estimation on net carbon emission from organic carbon transport caused by Three Gorges Dam. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(4): 1930-1936.
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