Temperature seasonality regulates organic carbon burial in lake
Abstract Organic carbon burial (OCB) in lakes, a critical component of the global carbon cycle, surpasses that in oceans, yet its response to global warming and associated feedbacks remains poorly understood. Using a well-dated biomarker sequence from the southern Tibetan Plateau and a comprehensive...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56399-4 |
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| author | Shengfang Zhou Hao Long Weizhe Chen Chunjing Qiu Can Zhang Hang Xing Jingran Zhang Liangqing Cheng Cheng Zhao Jun Cheng Philippe Ciais |
| author_facet | Shengfang Zhou Hao Long Weizhe Chen Chunjing Qiu Can Zhang Hang Xing Jingran Zhang Liangqing Cheng Cheng Zhao Jun Cheng Philippe Ciais |
| author_sort | Shengfang Zhou |
| collection | DOAJ |
| description | Abstract Organic carbon burial (OCB) in lakes, a critical component of the global carbon cycle, surpasses that in oceans, yet its response to global warming and associated feedbacks remains poorly understood. Using a well-dated biomarker sequence from the southern Tibetan Plateau and a comprehensive analysis of Holocene total organic carbon variations in lakes across the region, here we demonstrate that lake OCB significantly declined throughout the Holocene, closely linked to changes in temperature seasonality. Process-based land surface model simulations clarified the key impact of temperature seasonality on OCB in lakes: increased seasonality in the early Holocene saw warmer summers enhancing ecosystem productivity and organic matter deposition, while cooler winters improved organic matter preservation. The Tibetan Plateau’s heightened sensitivity to climate and ecosystem dynamics amplifies these effects. With declining temperature seasonality, we predict a significant slowdown or reduction in OCB across these lake sediments, leading to carbon emissions and amplified global warming. |
| format | Article |
| id | doaj-art-55c7e08759d84a46b3ae199b87e44ac6 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-55c7e08759d84a46b3ae199b87e44ac62025-01-26T12:40:19ZengNature PortfolioNature Communications2041-17232025-01-011611910.1038/s41467-025-56399-4Temperature seasonality regulates organic carbon burial in lakeShengfang Zhou0Hao Long1Weizhe Chen2Chunjing Qiu3Can Zhang4Hang Xing5Jingran Zhang6Liangqing Cheng7Cheng Zhao8Jun Cheng9Philippe Ciais10Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of SciencesKey Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of SciencesState Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of GeosciencesResearch Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal UniversityKey Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of SciencesKey Laboratory of Humid Subtropical Eco-geographical Process (Ministry of Education), School of Geographical Sciences, Fujian Normal UniversitySchool of Geography, Nanjing Normal University, Jiangsu Centre for Collaborative Innovation in Geographical Information Resource Development and ApplicationKey Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of SciencesSchool of Geography and Ocean Science, Nanjing UniversitySchool of Marine Sciences, Nanjing University of Information Science and TechnologyLaboratoire des Sciences du Climat et de l’ Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-SaclayAbstract Organic carbon burial (OCB) in lakes, a critical component of the global carbon cycle, surpasses that in oceans, yet its response to global warming and associated feedbacks remains poorly understood. Using a well-dated biomarker sequence from the southern Tibetan Plateau and a comprehensive analysis of Holocene total organic carbon variations in lakes across the region, here we demonstrate that lake OCB significantly declined throughout the Holocene, closely linked to changes in temperature seasonality. Process-based land surface model simulations clarified the key impact of temperature seasonality on OCB in lakes: increased seasonality in the early Holocene saw warmer summers enhancing ecosystem productivity and organic matter deposition, while cooler winters improved organic matter preservation. The Tibetan Plateau’s heightened sensitivity to climate and ecosystem dynamics amplifies these effects. With declining temperature seasonality, we predict a significant slowdown or reduction in OCB across these lake sediments, leading to carbon emissions and amplified global warming.https://doi.org/10.1038/s41467-025-56399-4 |
| spellingShingle | Shengfang Zhou Hao Long Weizhe Chen Chunjing Qiu Can Zhang Hang Xing Jingran Zhang Liangqing Cheng Cheng Zhao Jun Cheng Philippe Ciais Temperature seasonality regulates organic carbon burial in lake Nature Communications |
| title | Temperature seasonality regulates organic carbon burial in lake |
| title_full | Temperature seasonality regulates organic carbon burial in lake |
| title_fullStr | Temperature seasonality regulates organic carbon burial in lake |
| title_full_unstemmed | Temperature seasonality regulates organic carbon burial in lake |
| title_short | Temperature seasonality regulates organic carbon burial in lake |
| title_sort | temperature seasonality regulates organic carbon burial in lake |
| url | https://doi.org/10.1038/s41467-025-56399-4 |
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