Dissolved organic carbon in permafrost regions : A review
A large quantity of organic carbon (C) is stored in northern and elevational permafrost regions. A portion of this large terrestrial organic C pool will be transferred by water into soil solution (~0.4 Pg C yr−1) (1 Pg=1015 g), rivers (~0.06 Pg C yr−1), wetlands, lakes, and oceans. The lateral trans...
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ftunivwagenin:oai:library.wur.nl:wurpubs/547265 2024-02-04T10:03:46+01:00 Dissolved organic carbon in permafrost regions : A review Ma, Qiang Jin, Huijun Yu, Congrong Bense, Victor F. 2019 application/pdf https://research.wur.nl/en/publications/dissolved-organic-carbon-in-permafrost-regions-a-review https://doi.org/10.1007/s11430-018-9309-6 en eng https://edepot.wur.nl/469992 https://research.wur.nl/en/publications/dissolved-organic-carbon-in-permafrost-regions-a-review doi:10.1007/s11430-018-9309-6 info:eu-repo/semantics/openAccess (c) publisher Wageningen University & Research Science China Earth Sciences 62 (2019) 2 ISSN: 1674-7313 Aquatic ecosystem Carbon biodegradability DOC export Dissolved organic carbon (DOC) Permafrost degradation info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2019 ftunivwagenin https://doi.org/10.1007/s11430-018-9309-6 2024-01-10T23:16:26Z A large quantity of organic carbon (C) is stored in northern and elevational permafrost regions. A portion of this large terrestrial organic C pool will be transferred by water into soil solution (~0.4 Pg C yr−1) (1 Pg=1015 g), rivers (~0.06 Pg C yr−1), wetlands, lakes, and oceans. The lateral transport of dissolved organic carbon (DOC) is the primary pathway, impacting river biogeochemistry and ecosystems. However, climate warming will substantially alter the lateral C shifts in permafrost regions. Vegetation, permafrost, precipitation, soil humidity and temperature, and microbial activities, among many other environmental factors, will shift substantially under a warming climate. It remains uncertain as to what extent the lateral C cycle is responding, and will respond, to climate change. This paper reviews recent studies on terrestrial origins of DOC, biodegradability, transfer pathways, and modelling, and on how to forecast of DOC fluxes in permafrost regions under a warming climate, as well as the potential anthropogenic impacts on DOC in permafrost regions. It is concluded that: (1) surface organic layer, permafrost soils, and vegetation leachates are the main DOC sources, with about 4.72 Pg C DOC stored in the topsoil at depths of 0–1 m in permafrost regions; (2) in-stream DOC concentrations vary spatially and temporally to a relatively small extent (1–60 mg C L−1) and annual export varies from 0.1–10 g C m–2 yr–1; (3) biodegradability of DOC from the thawing permafrost can be as high as 71%, with a median at 52%; (4) DOC flux is controlled by multiple factors, mainly including vegetation, soil properties, permafrost occurrence, river discharge and other related environmental factors, and (5) many statistical and process-based models have been developed, but model predictions are inconsistent with observational results largely dependent on the individual watershed characteristics and future discharge trends. Thus, it is still difficult to predict how future lateral C flux will respond to climate change, ... Article in Journal/Newspaper permafrost Wageningen UR (University & Research Centre): Digital Library Science China Earth Sciences 62 2 349 364 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Aquatic ecosystem Carbon biodegradability DOC export Dissolved organic carbon (DOC) Permafrost degradation |
spellingShingle |
Aquatic ecosystem Carbon biodegradability DOC export Dissolved organic carbon (DOC) Permafrost degradation Ma, Qiang Jin, Huijun Yu, Congrong Bense, Victor F. Dissolved organic carbon in permafrost regions : A review |
topic_facet |
Aquatic ecosystem Carbon biodegradability DOC export Dissolved organic carbon (DOC) Permafrost degradation |
description |
A large quantity of organic carbon (C) is stored in northern and elevational permafrost regions. A portion of this large terrestrial organic C pool will be transferred by water into soil solution (~0.4 Pg C yr−1) (1 Pg=1015 g), rivers (~0.06 Pg C yr−1), wetlands, lakes, and oceans. The lateral transport of dissolved organic carbon (DOC) is the primary pathway, impacting river biogeochemistry and ecosystems. However, climate warming will substantially alter the lateral C shifts in permafrost regions. Vegetation, permafrost, precipitation, soil humidity and temperature, and microbial activities, among many other environmental factors, will shift substantially under a warming climate. It remains uncertain as to what extent the lateral C cycle is responding, and will respond, to climate change. This paper reviews recent studies on terrestrial origins of DOC, biodegradability, transfer pathways, and modelling, and on how to forecast of DOC fluxes in permafrost regions under a warming climate, as well as the potential anthropogenic impacts on DOC in permafrost regions. It is concluded that: (1) surface organic layer, permafrost soils, and vegetation leachates are the main DOC sources, with about 4.72 Pg C DOC stored in the topsoil at depths of 0–1 m in permafrost regions; (2) in-stream DOC concentrations vary spatially and temporally to a relatively small extent (1–60 mg C L−1) and annual export varies from 0.1–10 g C m–2 yr–1; (3) biodegradability of DOC from the thawing permafrost can be as high as 71%, with a median at 52%; (4) DOC flux is controlled by multiple factors, mainly including vegetation, soil properties, permafrost occurrence, river discharge and other related environmental factors, and (5) many statistical and process-based models have been developed, but model predictions are inconsistent with observational results largely dependent on the individual watershed characteristics and future discharge trends. Thus, it is still difficult to predict how future lateral C flux will respond to climate change, ... |
format |
Article in Journal/Newspaper |
author |
Ma, Qiang Jin, Huijun Yu, Congrong Bense, Victor F. |
author_facet |
Ma, Qiang Jin, Huijun Yu, Congrong Bense, Victor F. |
author_sort |
Ma, Qiang |
title |
Dissolved organic carbon in permafrost regions : A review |
title_short |
Dissolved organic carbon in permafrost regions : A review |
title_full |
Dissolved organic carbon in permafrost regions : A review |
title_fullStr |
Dissolved organic carbon in permafrost regions : A review |
title_full_unstemmed |
Dissolved organic carbon in permafrost regions : A review |
title_sort |
dissolved organic carbon in permafrost regions : a review |
publishDate |
2019 |
url |
https://research.wur.nl/en/publications/dissolved-organic-carbon-in-permafrost-regions-a-review https://doi.org/10.1007/s11430-018-9309-6 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Science China Earth Sciences 62 (2019) 2 ISSN: 1674-7313 |
op_relation |
https://edepot.wur.nl/469992 https://research.wur.nl/en/publications/dissolved-organic-carbon-in-permafrost-regions-a-review doi:10.1007/s11430-018-9309-6 |
op_rights |
info:eu-repo/semantics/openAccess (c) publisher Wageningen University & Research |
op_doi |
https://doi.org/10.1007/s11430-018-9309-6 |
container_title |
Science China Earth Sciences |
container_volume |
62 |
container_issue |
2 |
container_start_page |
349 |
op_container_end_page |
364 |
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1789971445689876480 |