Academic Journal
Plant litter chemistry controls coarse‐textured soil carbon dynamics
| العنوان: | Plant litter chemistry controls coarse‐textured soil carbon dynamics |
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| المؤلفون: | Huys, Raoul, Poirier, Vincent, Bourget, Malo, Y, Roumet, Catherine, Hättenschwiler, Stephan, Fromin, Nathalie, Munson, Alison, D, Freschet, Grégoire, T |
| المساهمون: | Station d'Ecologie Théorique et Expérimentale (SETE), Centre National de la Recherche Scientifique (CNRS)-Fédération de Recherche Agrobiosciences, Interactions et Biodiversité (FR AIB), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche cerveau et cognition (CERCO UMR5549), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Toulouse Mind & Brain Institut (TMBI), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD Occitanie )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM), Centre d'Etude de la Forêt (Faculté de foresterie, de géographie et de géomatique), Université Laval Québec (ULaval), ANR-10-LABX-0041,TULIP,Towards a Unified theory of biotic Interactions: the roLe of environmental(2010), ANR-10-LABX-0004,CeMEB,Mediterranean Center for Environment and Biodiversity(2010) |
| المصدر: | ISSN: 0022-0477. |
| بيانات النشر: | HAL CCSD Wiley |
| سنة النشر: | 2022 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | Carbon cycle, plant litter, litter traits, decomposition, soil organic matter, mineralassociated organic matter, particulate organic matter, priming effect, carbon saturation, [SDE]Environmental Sciences |
| الوصف: | International audience ; As soils store more carbon (C) than the Earth’s atmosphere and terrestrial biomass together, the balance between soil C uptake in the form of soil organic matter and release as CO2 upon its decomposition is a critical determinant in the global C cycle regulating our planet’s climate. Although plant litter is the predominant source of C fuelling both soil C build-up and losses, the issue of how litter chemistry influences this balance remains unresolved.As a contribution to solving that issue, we traced the fate of C during near-complete decomposition of 13C-labelled leaf and root litters from 12 plant species in a coarse-textured soil. We separated the soil organic carbon (SOC) into mineral-associated organic matter (MAOM) and particulate organic matter (POM) pools, and investigated how 14 litter chemical traits affected novel SOC formation and native SOC mineralization (i.e., the priming effect) in these soil fractions.We observed an overall net increase in SOC due to the addition of litter, which was stronger for root than for leaf litters. The presumed stable MAOM-C pool underwent both substantial stabilisation and mineralization, whereas the presumably less stable POM-C pool showed substantial stabilisation and reduced mineralization. Overall, the initial increase in soil C mineralization was fully counterbalanced by a later decrease in native soil C mineralization. POM-C formation as well as MAOM-C formation and mineralization were positively related to the initial litter lignin concentration and negatively to that of the nitrogen leachates, whereas the opposite was observed for POM-C mineralization.Synthesis. Our results highlight the importance of litter chemical traits for SOC formation, and stabilisation, destabilisation, and mineralization. In our coarse-textured soil, the amount of MAOM-C did not change despite large C fluxes through this pool. The litter chemical traits that drove these processes differed from those frequently reported for fine-textured soils far from ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1111/1365-2745.13997 |
| الاتاحة: | https://hal.science/hal-03787888 https://hal.science/hal-03787888v1/document https://hal.science/hal-03787888v1/file/Huys%20et%20al.%202022%20-%20Plant%20litter%20chemistry%20controls%20coarse%E2%80%90textured%20soil%20carbon%20dynamics.pdf https://doi.org/10.1111/1365-2745.13997 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.14743380 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1111/1365-2745.13997 |
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