Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective
Abstract Protection by metal (hydr) oxides is one of the key mechanisms for the long‐term stabilization of soil organic carbon (SOC). However, the source and turnover of (metal‐) bound organic carbon (OC) in soils are poorly constrained. Here we present the first large‐scale study on the 13C and 14C...
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2024GL112491 |
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| author | Tian Ma Yiyun Wang Guohua Dai Juan Jia Zongguang Liu Yufu Jia Simin Wang Erxiong Zhu Xinying Zhang Negar Haghipour Lukas Wacker Bingrui Jia Jin‐Sheng He Hailong Zhang Meixun Zhao Timothy I. Eglinton Xiaojuan Feng |
| author_facet | Tian Ma Yiyun Wang Guohua Dai Juan Jia Zongguang Liu Yufu Jia Simin Wang Erxiong Zhu Xinying Zhang Negar Haghipour Lukas Wacker Bingrui Jia Jin‐Sheng He Hailong Zhang Meixun Zhao Timothy I. Eglinton Xiaojuan Feng |
| author_sort | Tian Ma |
| collection | DOAJ |
| description | Abstract Protection by metal (hydr) oxides is one of the key mechanisms for the long‐term stabilization of soil organic carbon (SOC). However, the source and turnover of (metal‐) bound organic carbon (OC) in soils are poorly constrained. Here we present the first large‐scale study on the 13C and 14C characteristics of bound OC in 15 wetland and upland soil profiles. We find that bound OC has similar δ13C as SOC, suggesting no preference for plant‐ or microbe‐derived carbon. However, bound OC Δ14C is more negative than SOC in wetland but not upland mineral soils, and decreases with increasing reactive minerals. Hence, in contrast to the conventional assumption, bound OC is better preserved relative to SOC in wetlands with high contents of reactive metals. Our finding highlights the dynamic exchange of bound OC with SOC in upland soils and calls for a better recognition of reactive metals in stabilizing OC in wetlands. |
| format | Article |
| id | doaj-art-625476e22c9347539457ec097f83b159 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-625476e22c9347539457ec097f83b1592025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL112491Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C PerspectiveTian Ma0Yiyun Wang1Guohua Dai2Juan Jia3Zongguang Liu4Yufu Jia5Simin Wang6Erxiong Zhu7Xinying Zhang8Negar Haghipour9Lukas Wacker10Bingrui Jia11Jin‐Sheng He12Hailong Zhang13Meixun Zhao14Timothy I. Eglinton15Xiaojuan Feng16State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaGeological Institute ETH Zürich Zürich SwitzerlandLaboratory of Ion Beam Physics Department of Physics ETH Zürich Zürich SwitzerlandState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Herbage Improvement and Grassland Agro‐ecosystems College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou ChinaLaoshan Laboratory Qingdao ChinaLaoshan Laboratory Qingdao ChinaGeological Institute ETH Zürich Zürich SwitzerlandState Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing ChinaAbstract Protection by metal (hydr) oxides is one of the key mechanisms for the long‐term stabilization of soil organic carbon (SOC). However, the source and turnover of (metal‐) bound organic carbon (OC) in soils are poorly constrained. Here we present the first large‐scale study on the 13C and 14C characteristics of bound OC in 15 wetland and upland soil profiles. We find that bound OC has similar δ13C as SOC, suggesting no preference for plant‐ or microbe‐derived carbon. However, bound OC Δ14C is more negative than SOC in wetland but not upland mineral soils, and decreases with increasing reactive minerals. Hence, in contrast to the conventional assumption, bound OC is better preserved relative to SOC in wetlands with high contents of reactive metals. Our finding highlights the dynamic exchange of bound OC with SOC in upland soils and calls for a better recognition of reactive metals in stabilizing OC in wetlands.https://doi.org/10.1029/2024GL112491 |
| spellingShingle | Tian Ma Yiyun Wang Guohua Dai Juan Jia Zongguang Liu Yufu Jia Simin Wang Erxiong Zhu Xinying Zhang Negar Haghipour Lukas Wacker Bingrui Jia Jin‐Sheng He Hailong Zhang Meixun Zhao Timothy I. Eglinton Xiaojuan Feng Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective Geophysical Research Letters |
| title | Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective |
| title_full | Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective |
| title_fullStr | Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective |
| title_full_unstemmed | Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective |
| title_short | Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective |
| title_sort | prolonged storage of bound organic carbon in wetland but not upland soils a 13c and 14c perspective |
| url | https://doi.org/10.1029/2024GL112491 |
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