Exceptional increases in fluvial sediment fluxes in a warmer and wetter High Mountain Asia

被引:181
作者
Li, Dongfeng [1 ]
Lu, Xixi [1 ]
Overeem, Irina [2 ]
Walling, Desmond E. [3 ]
Syvitski, Jaia [2 ]
Kettner, Albert J. [2 ]
Bookhagen, Bodo [4 ]
Zhou, Yinjun [5 ]
Zhang, Ting [1 ]
机构
[1] Natl Univ Singapore, Dept Geog, Kent Ridge 117570, Singapore
[2] Univ Colorado, Inst Arctic & Alpine Res, CSDMS, Boulder, CO 80309 USA
[3] Univ Exeter, Coll Life & Environm Sci, Dept Geog, Exeter EX4 4RJ, Devon, England
[4] Univ Potsdam, Inst Geosci, D-14476 Potsdam, Germany
[5] Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China
基金
美国国家科学基金会;
关键词
SUSPENDED SEDIMENT; ARCTIC RIVERS; YANGTZE-RIVER; DISCHARGE; LOAD; TEMPERATURE; EROSION; IMPACT; YIELD; BASIN;
D O I
10.1126/science.abi9649
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Rivers originating in High Mountain Asia are crucial lifelines for one-third of the world's population. These fragile headwaters are now experiencing amplified climate change, glacier melt, and permafrost thaw. Observational data from 28 headwater basins demonstrate substantial increases in both annual runoff and annual sediment fluxes across the past six decades. The increases are accelerating from the mid-1990s in response to a warmer and wetter climate. The total sediment flux from High Mountain Asia is projected to more than double by 2050 under an extreme climate change scenario. These findings have far-reaching implications for the region's hydropower, food, and environmental security.
引用
收藏
页码:599 / +
页数:42
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