How Will Riverine Carbon Emissions and Productivity Respond to Extreme Climate Events and Dam Regulations?
文献类型：期刊论文
| 作者 | Sun, Kun3,4; Zhang, Yuan2; Wang, Mingrui1,3; Jia, Junjie3; Gao, Yang1,3 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2026-01-20 |
| 卷号 | 60期号:2页码:PMID 213155 |
| 关键词 | River ecology Carbon cycle Primaryproductivity Carbon metabolism Climate change Three GorgesReservoir Region |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.5c14227 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Climate change and anthropogenic activities have significantly altered the carbon (C) balance of rivers. However, the current understanding of how riverine C biogeochemistry responds to global climate change remains limited. Here we evaluate the spatiotemporal dynamics of carbon dioxide (CO2) flux and phytoplankton primary productivity (PP) in the main stem and tributaries of the Three Gorges Reservoir Region between 2010 and 2023. We found that the response of the CO2 flux and PP was evident in the extremely rainy months when, on average, the CO2 flux increased by 42.5% and PP decreased by 10.7%. Spatially, we also observed significant CO2 flux and PP differences between the backwater and upstream areas of the tributaries. CO2 flux at the upstream sites was 60-266% higher than at the backwater sites, while PP at the backwater sites was 4-13 times the amount of PP at the upstream sites. Differences in flow velocity and chlorophyll concentrations between the backwater and upstream sites, which primarily originate from the water level regulation operations of the dam, are believed to dominate spatial CO2 flux and PP gradients, respectively. This study reveals the response patterns and feedback mechanisms between riverine C biogeochemistry and global climate change factors in a large dammed river and associated tributaries. |
| URL标识 | 查看原文 |
| WOS关键词 | 3 GORGES RESERVOIR ; TRIBUTARY ; DIOXIDE ; IMPACTS |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001655263700001 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219725]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Gao, Yang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Hubei Environm Monitoring Ctr, Wuhan 430072, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 4.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Sun, Kun,Zhang, Yuan,Wang, Mingrui,et al. How Will Riverine Carbon Emissions and Productivity Respond to Extreme Climate Events and Dam Regulations?[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2026,60(2):PMID 213155. |
| APA | Sun, Kun,Zhang, Yuan,Wang, Mingrui,Jia, Junjie,&Gao, Yang.(2026).How Will Riverine Carbon Emissions and Productivity Respond to Extreme Climate Events and Dam Regulations?.ENVIRONMENTAL SCIENCE & TECHNOLOGY,60(2),PMID 213155. |
| MLA | Sun, Kun,et al."How Will Riverine Carbon Emissions and Productivity Respond to Extreme Climate Events and Dam Regulations?".ENVIRONMENTAL SCIENCE & TECHNOLOGY 60.2(2026):PMID 213155. |
入库方式： OAI收割
来源：地理科学与资源研究所
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