Evidence for accelerated weathering and sulfate export in high alpine environments
Evidence for accelerated weathering and sulfate export in high alpine environments
复制标题
高山环境中加速风化和硫酸盐输出的证据
DOI:
10.1088/1748-9326/ab5d9c
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发表时间:
2019
影响因子:
6.7
通讯作者:
Neff, Jason C.
中科院分区:
文献类型:
--
作者:
Crawford, John T.;Hinckley, Eve-Lyn S.;Litaor, M. Iggy;Brahney, Janice;Neff, Jason C.
High elevation alpine ecosystems—the'water towers of the world'—provide water for human populations around the globe. Active geomorphic features such as glaciers and permafrost leave alpine ecosystems susceptible to changes in climate which could also lead to changing biogeochemistry and water quality. Here, we synthesize recent changes in high-elevation stream chemistry from multiple sites that demonstrate a consistent and widespread pattern of increasing sulfate and base cation concentrations or fluxes. This trend has occurred over the past 30 years and is consistent across multiple sites in the Rocky Mountains of the United States, western Canada, the European Alps, the Icelandic Shield, and the Himalayas in Asia. To better understand these recent changes and to examine the potential causes of increased sulfur and base cation concentrations in surface waters, we present a synthesis of global records as well as a high resolution 33 year record of atmospheric deposition and river export data from a long-term ecological research site in Colorado, USA. We evaluate which factors may be driving global shifts in stream chemistry including atmospheric deposition trends and broad climatic patterns. Our analysis suggests that recent changes in climate may be stimulating changes to hydrology and/or geomorphic processes, which in turn lead to accelerated weathering of bedrock. This cascade of effects has broad implications for the chemistry and quality of important surface water resources.
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影响因子:
64.8
作者:
Sabine Sommaruga-Wögrath;K. Koinig;R. Schmidt;R. Sommaruga;R. Tessadri;R. Psenner
通讯作者:
Sabine Sommaruga-Wögrath;K. Koinig;R. Schmidt;R. Sommaruga;R. Tessadri;R. Psenner
影响因子:
5
作者:
Mast, MA;Turk, JT;Kester, CL
通讯作者:
Kester, CL
影响因子:
4.9
作者:
R. Darmody;C. E. Thorn;J. Dixon
通讯作者:
J. Dixon
影响因子:
4
作者:
M. Mast;J. Turk;D. Clow;D. Campbell
通讯作者:
D. Campbell
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
P. Dillon;B. Skjelkvåle;K. Somers;K. Tørseth
通讯作者:
K. Tørseth