Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective
Abstract Soil organic matter (SOM) is the largest actively cycling reservoir of terrestrial carbon (C), and the majority of SOM in Earth's mineral soils (~65%) is mineral‐associated organic matter (MAOM). Thus, the formation and fate of MAOM can exert substantial influence on the global C cycle...
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Online Access: | http://dx.doi.org/10.1111/1365-2435.14040 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.14040 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.14040 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.14040 |
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crwiley:10.1111/1365-2435.14040 2024-10-13T14:11:13+00:00 Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective Sokol, Noah W. Whalen, Emily D. Jilling, Andrea Kallenbach, Cynthia Pett‐Ridge, Jennifer Georgiou, Katerina U.S. Department of Energy Lawrence Livermore National Laboratory University of New Hampshire 2022 http://dx.doi.org/10.1111/1365-2435.14040 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.14040 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.14040 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.14040 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ Functional Ecology volume 36, issue 6, page 1411-1429 ISSN 0269-8463 1365-2435 journal-article 2022 crwiley https://doi.org/10.1111/1365-2435.14040 2024-09-19T04:20:01Z Abstract Soil organic matter (SOM) is the largest actively cycling reservoir of terrestrial carbon (C), and the majority of SOM in Earth's mineral soils (~65%) is mineral‐associated organic matter (MAOM). Thus, the formation and fate of MAOM can exert substantial influence on the global C cycle. To predict future changes to Earth's climate, it is critical to mechanistically understand the processes by which MAOM is formed and decomposed, and to accurately represent this process‐based understanding in biogeochemical and Earth system models. In this review, we use a trait‐based framework to synthesize the interacting roles of plants, soil micro‐organisms, and the mineral matrix in regulating MAOM formation and decomposition. Our proposed framework differentiates between plant and microbial traits that influence total OM inputs to the soil (‘feedstock traits’) versus traits that influence the proportion of OM inputs that are ultimately incorporated into MAOM (‘MAOM formation traits’). We discuss how these feedstock and MAOM formation traits may be altered by warming, altered precipitation and elevated carbon dioxide. At a planetary scale, these feedstock and MAOM formation traits help shape the distribution of MAOM across Earth's biomes, and modulate biome‐specific responses of MAOM to climate change. We leverage a global synthesis of MAOM measurements to provide estimates of the total amount of MAOM‐C globally (~840–1540 Pg C; 34%–51% of total terrestrial organic C), and its distribution across Earth's biomes. We show that MAOM‐C concentration is highest in temperate forests and grasslands, and lowest in shrublands and savannas. Grasslands and croplands have the highest proportion of soil organic carbon (SOC) in the MAOM fraction (i.e. the MAOM‐C:SOC ratio), while boreal forests and tundra have the lowest MAOM‐C:SOC ratio. Drawing on our trait framework, we then review experimental data and posit the effects of climate change on MAOM pools in different biomes. We conclude by discussing how MAOM is integrated into ... Article in Journal/Newspaper Tundra Wiley Online Library Functional Ecology 36 6 1411 1429 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Soil organic matter (SOM) is the largest actively cycling reservoir of terrestrial carbon (C), and the majority of SOM in Earth's mineral soils (~65%) is mineral‐associated organic matter (MAOM). Thus, the formation and fate of MAOM can exert substantial influence on the global C cycle. To predict future changes to Earth's climate, it is critical to mechanistically understand the processes by which MAOM is formed and decomposed, and to accurately represent this process‐based understanding in biogeochemical and Earth system models. In this review, we use a trait‐based framework to synthesize the interacting roles of plants, soil micro‐organisms, and the mineral matrix in regulating MAOM formation and decomposition. Our proposed framework differentiates between plant and microbial traits that influence total OM inputs to the soil (‘feedstock traits’) versus traits that influence the proportion of OM inputs that are ultimately incorporated into MAOM (‘MAOM formation traits’). We discuss how these feedstock and MAOM formation traits may be altered by warming, altered precipitation and elevated carbon dioxide. At a planetary scale, these feedstock and MAOM formation traits help shape the distribution of MAOM across Earth's biomes, and modulate biome‐specific responses of MAOM to climate change. We leverage a global synthesis of MAOM measurements to provide estimates of the total amount of MAOM‐C globally (~840–1540 Pg C; 34%–51% of total terrestrial organic C), and its distribution across Earth's biomes. We show that MAOM‐C concentration is highest in temperate forests and grasslands, and lowest in shrublands and savannas. Grasslands and croplands have the highest proportion of soil organic carbon (SOC) in the MAOM fraction (i.e. the MAOM‐C:SOC ratio), while boreal forests and tundra have the lowest MAOM‐C:SOC ratio. Drawing on our trait framework, we then review experimental data and posit the effects of climate change on MAOM pools in different biomes. We conclude by discussing how MAOM is integrated into ... |
author2 |
U.S. Department of Energy Lawrence Livermore National Laboratory University of New Hampshire |
format |
Article in Journal/Newspaper |
author |
Sokol, Noah W. Whalen, Emily D. Jilling, Andrea Kallenbach, Cynthia Pett‐Ridge, Jennifer Georgiou, Katerina |
spellingShingle |
Sokol, Noah W. Whalen, Emily D. Jilling, Andrea Kallenbach, Cynthia Pett‐Ridge, Jennifer Georgiou, Katerina Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective |
author_facet |
Sokol, Noah W. Whalen, Emily D. Jilling, Andrea Kallenbach, Cynthia Pett‐Ridge, Jennifer Georgiou, Katerina |
author_sort |
Sokol, Noah W. |
title |
Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective |
title_short |
Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective |
title_full |
Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective |
title_fullStr |
Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective |
title_full_unstemmed |
Global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: A trait‐based perspective |
title_sort |
global distribution, formation and fate of mineral‐associated soil organic matter under a changing climate: a trait‐based perspective |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/1365-2435.14040 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.14040 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.14040 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.14040 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Functional Ecology volume 36, issue 6, page 1411-1429 ISSN 0269-8463 1365-2435 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/1365-2435.14040 |
container_title |
Functional Ecology |
container_volume |
36 |
container_issue |
6 |
container_start_page |
1411 |
op_container_end_page |
1429 |
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1812818862085767168 |