4.7 Article

Dispersed ice of permafrost peatlands represents an important source of labile carboxylic acids, nutrients and metals

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Analytical

Organic carbon, and major and trace elements reside in labile low-molecular form in the ground ice of permafrost peatlands: a case study of colloids in peat ice of Western Siberia

Artem G. Lim et al.

Summary: The fate of organic carbon, nutrients, and metals in thawing permafrost ice is crucial for understanding environmental changes in the Arctic. This study investigated the distribution and bioavailability of these substances in peat cores from the Western Siberian Lowland. The researchers found that the increase in dissolved organic carbon and certain elements in peat ice was mainly due to the low molecular weight fraction, while colloids dominated the upper layer. This research highlights the importance of permafrost thaw in influencing the release of solutes into rivers.

ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS (2022)

Article Soil Science

Sizable pool of labile organic carbon in peat and mineral soils of permafrost peatlands, western Siberia

Artem G. Lim et al.

Summary: In permafrost regions, the behavior of dissolved organic matter (DOM) in frozen mineral horizons under peat soils remains poorly understood. Through experiments in Western Siberia Lowland, it was found that the adsorption capacity of mineral layers on peat leachate DOM can significantly attenuate the release of DOC during thaw, providing important insights for modeling the feedback of permafrost thaw on carbon export and CO2 emissions.

GEODERMA (2022)

Article Environmental Sciences

Dispersed ground ice of permafrost peatlands: Potential unaccounted carbon, nutrient and metal sources

Artem G. Lim et al.

Summary: The study found that dissolved organic carbon (DOC), alkali and alkaline-earth metals, sulfate, phosphorus, and other substances were significantly more concentrated in peat ice compared to peat porewaters from the active layer. During full freezing of the soil column in winter, there was a local maximum of enrichment in certain substances located 30-50 cm below the active layer. This research highlights the importance of assessing the consequences of permafrost thaw on surface aquatic systems.

CHEMOSPHERE (2021)

Article Multidisciplinary Sciences

Carbon emission from Western Siberian inland waters

Jan Karlsson et al.

Summary: High-latitude regions, particularly Western Siberia, play a crucial role in the carbon cycle and climate system. Emission of carbon from inland waters, such as rivers and lakes, exceeds carbon export to the Arctic Ocean and is a major contributor to the regional carbon balance. This highlights the importance of coupled land-water studies in understanding the contemporary carbon cycle and its response to warming.

NATURE COMMUNICATIONS (2021)

Article Soil Science

Colloidal organic carbon and trace elements in peat porewaters across a permafrost gradient in Western Siberia

Tatiana Raudina et al.

Summary: The study found that the proportion of organic carbon and element colloids in peatlands in Western Siberia did not change significantly across different micro-landscapes and permafrost zones. Colloids were predominantly composed of Fe-Al-organic compounds, with their proportion influenced mainly by depth, permafrost type, and microrelief.

GEODERMA (2021)

Article Environmental Sciences

Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands

Dahedrey Payandi-Rolland et al.

Summary: While dissolved organic carbon concentrations remained relatively stable during freeze-thaw cycles, certain trace elements exhibited significant variations, with enrichment in leachates and depression water, but a decrease in thermokarst lake and river water. The observations suggest an increase in aliphatic low molecular weight organic matter, as well as the precipitation of Fe, Al hydroxides, and organo-mineral particles, indicating potential effects on aquatic transport of DOC and metals in permafrost regions.

CHEMOSPHERE (2021)

Article Water Resources

Seasonal ground ice impacts on spring ecohydrological conditions in a western boreal plains peatland

Brandon Van Huizen et al.

HYDROLOGICAL PROCESSES (2020)

Article Geosciences, Multidisciplinary

Carbon release through abrupt permafrost thaw

Merritt R. Turetsky et al.

NATURE GEOSCIENCE (2020)

Article Environmental Sciences

Estimation of hydraulic conductivity of saturated frozen soil from the soil freezing characteristic curve

Feng Ming et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

Article Multidisciplinary Sciences

Fast response of cold ice-rich permafrost in northeast Siberia to a warming climate

Jan Nitzbon et al.

NATURE COMMUNICATIONS (2020)

Review Geosciences, Multidisciplinary

Pore-scale controls on hydrological and geochemical processes in peat: Implications on interacting processes

C. P. R. McCarter et al.

EARTH-SCIENCE REVIEWS (2020)

Article Environmental Sciences

Dissolved organic matter biodegradation along a hydrological continuum in permafrost peatlands

D. Payandi-Rolland et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

Article Multidisciplinary Sciences

Canadian permafrost stores large pools of ammonium and optically distinct dissolved organic matter

J. Fouche et al.

NATURE COMMUNICATIONS (2020)

Article Environmental Sciences

Dissolved organic carbon and nitrogen release from boreal Holocene permafrost and seasonally frozen soils of Alaska

Kimberly P. Wickland et al.

ENVIRONMENTAL RESEARCH LETTERS (2018)

Article Engineering, Environmental

Complete and Partial Photo-oxidation of Dissolved Organic Matter Draining Permafrost Soils

Collin P. Ward et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016)

Article Geochemistry & Geophysics

Organic and organo-mineral colloids in discontinuous permafrost zone

Oleg S. Pokrovsky et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2016)

Article Environmental Sciences

Size and characteristics of the DOC pool in near-surface subarctic mire permafrost as a potential source for nearby freshwaters

M. S. Thompson et al.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2015)

Article Geochemistry & Geophysics

Chemical composition of dissolved organic matter draining permafrost soils

Collin P. Ward et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2015)

Article Geochemistry & Geophysics

Uranium isotopes and dissolved organic carbon in loess permafrost: Modeling the age of ancient ice

S. A. Ewing et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2015)

Article Geosciences, Multidisciplinary

Long-term anoxia and release of ancient, labile carbon upon thaw of Pleistocene permafrost

Stephanie A. Ewing et al.

GEOPHYSICAL RESEARCH LETTERS (2015)

Article Multidisciplinary Sciences

Ancient low-molecular-weight organic acids in permafrost fuel rapid carbon dioxide production upon thaw

Travis W. Drake et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2015)

Article Environmental Sciences

Impact of degrading permafrost on subsurface solute transport pathways and travel times

Andrew Frampton et al.

WATER RESOURCES RESEARCH (2015)

Article Environmental Sciences

Hydrology and pore water chemistry in a permafrost wetland, Ilulissat, Greenland

Soren Jessen et al.

WATER RESOURCES RESEARCH (2014)

Article Environmental Sciences

Expert assessment of vulnerability of permafrost carbon to climate change

E. A. G. Schuur et al.

CLIMATIC CHANGE (2013)

Article Engineering, Environmental

Past and Present Permafrost Temperatures in the Abisko Area: Redrilling of Boreholes

Margareta Johansson et al.

Article Geography, Physical

Permafrost Thermal State in the Polar Northern Hemisphere during the International Polar Year 2007-2009: a Synthesis

Vladimir E. Romanovsky et al.

PERMAFROST AND PERIGLACIAL PROCESSES (2010)

Article Environmental Sciences

Soil organic carbon pools in the northern circumpolar permafrost region

C. Tarnocai et al.

GLOBAL BIOGEOCHEMICAL CYCLES (2009)

Article Geography, Physical

Thawing permafrost and thicker active layers in sub-arctic Sweden

H. Jonas Akerman et al.

PERMAFROST AND PERIGLACIAL PROCESSES (2008)

Article Environmental Sciences

Geochemistry of west Siberian streams and their potential response to permafrost degradation

Karen E. Frey et al.

WATER RESOURCES RESEARCH (2007)

Article Geosciences, Multidisciplinary

Amplified carbon release from vast West Siberian peatlands by 2100

KE Frey et al.

GEOPHYSICAL RESEARCH LETTERS (2005)

Article Geography, Physical

The transient layer: Implications for geocryology and climate-change science

Y Shur et al.

PERMAFROST AND PERIGLACIAL PROCESSES (2005)

Article Geosciences, Multidisciplinary

Geochemistry of the active layer and near-surface permafrost, Mackenzie delta region, Northwest Territories, Canada

SV Kokelj et al.

CANADIAN JOURNAL OF EARTH SCIENCES (2005)