Emerging solute-induced mineralization in Arctic rivers under climate warming
文献类型：期刊论文
| 作者 | Liu, Shiqi2; Wang, Ping1,2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-12-10 |
| 卷号 | 851页码:11 |
| 关键词 | River mineralization Riverine solute exports Arctic rivers Permafrost degradation Climate warming |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.158091 |
| 通讯作者 | Wang, Ping(wangping@igsnrr.ac.cn) |
| 英文摘要 | Permafrost degradation under a warming climate is accelerating the hydrological processes in Arctic river basins. However, corresponding changes in river mineralization, riverine solute exports and their potential influencing factors are not fully understood. In this study, we selected six major Arctic rivers (Ob, Yenisei, Lena, Kolyma, Yukon and Mackenzie Rivers) with different permafrost extents, meteorological conditions and hydrological regimes to reveal the changes in river mineralization and riverine solute exports using ArcticGRO sampling data from 2003 to 2019. Our results indicate that solute-induced river mineralization has already been observed in the Lena, Yukon and Mackenzie Rivers during 2003-2019. The annual flux of total dissolved solids (TDS; a key parameter of drinking water quality), calculated by the Load Estimator (LOADEST) program, from these six rivers was approximately 295.24 +/- 12.50 Tg, with the Ob, Kolyma and Yukon Rivers exhibiting significant increasing trends (p < 0.05) at rates of 4.38 Tg/10 yr, 1.62 Tg/10 yr and 3.03 Tg/10 yr, respectively. Climate-induced changes in hydrological regimes regulate riverine solute exports, with relatively higher TDS concentrations in the groundwater-dominated winter low-flow season and lower TDS concentrations under the dilution of groundwater by snowmelt spring floods and summer precipitation events. The riverine solute fluxes with higher TDS concentrations (e.g., those of the Yukon and Mackenzie Rivers) increased more rapidly (similar to 0.14 Tg/km(3)) with changes in river discharge; however, the TDS concentrations were more sensitive to climate warming in continuous permafrost-dominated colder basins (i.e., the Kolyma and Lena River basins) than in other relatively warmer basins. Our results suggest that riverine solute exports are likely affected by permafrost thaw-induced changes in hydrogeological processes, which are tightly associated with increases in active layer thickness and enhanced groundwater discharge to rivers. Under a warming climate, riverine solute exports in Arctic rivers are expected to increase with intensifying groundwater-surface water exchanges. |
| WOS关键词 | DISCONTINUOUS PERMAFROST ; WATER ; SEDIMENT ; NUTRIENTS ; HYDROGEOCHEMISTRY ; STREAMFLOW ; TERRITORY ; CHEMISTRY ; PATHWAYS ; IMPACTS |
| 资助项目 | National Natural Science Foundation of China[E1C10060AE] ; National Natural Science Foundation of China[42061134017] ; China Postdoctoral Science Foundation[O7Z76095Z1] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000877919900010 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/186668]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Ping |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shiqi,Wang, Ping. Emerging solute-induced mineralization in Arctic rivers under climate warming[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,851:11. |
| APA | Liu, Shiqi,&Wang, Ping.(2022).Emerging solute-induced mineralization in Arctic rivers under climate warming.SCIENCE OF THE TOTAL ENVIRONMENT,851,11. |
| MLA | Liu, Shiqi,et al."Emerging solute-induced mineralization in Arctic rivers under climate warming".SCIENCE OF THE TOTAL ENVIRONMENT 851(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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