Afficher la notice abrégée

Hydrology and microtopography control carbon dynamics in wetlands: Implications in partitioning ecosystem respiration in a coastal plain forested wetland

hal.structure.identifierDepartment of Forestry and Environmental Resources
hal.structure.identifierDepartment of Natural Resources and Environmental Sciences
dc.contributor.authorMIAO, Guofang
hal.structure.identifierDepartment of Forestry and Environmental Resources
hal.structure.identifierDepartment of Ecosystem Science and Management
dc.contributor.authorNOORMETS, Asko
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierNorth Carolina State University [Raleigh] [NC State]
dc.contributor.authorFUENTES, Montserrat
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorTRETTIN, Carl C.
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorSUN, Ge
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorMCNULTY, Steve G.
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorKING, John S.
dc.date.accessioned2024-04-08T12:04:00Z
dc.date.available2024-04-08T12:04:00Z
dc.date.issued2017
dc.identifier.issn0168-1923
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196289
dc.description.abstractEnWetlands store a disproportionately large fraction of organic carbon relative to their areal coverage, and thus play an important role in global climate mitigation. As destabilization of these stores through land use or environmental change represents a significant climate feedback, it is important to understand the functional regulation of respiratory processes that catabolize them. In this study, we established an eddy covariance flux tower project in a coastal plain forested wetland in North Carolina, USA, and measured total ecosystem respiration (R-e) over three years (2009-2011). We evaluated the magnitude and variability of three respiration components-belowground (R-s), coarse woody debris (R-CWD), and aboveground plant (R-asp) respiration at the ecosystem scale, by accounting microtopographic variation for upscaling and constraining the mass balance with R-e. Strong hydrologic control was detected for 12, and R-CWD,, whereas R-asp and R-e were relatively insensitive to water table fluctuations. In a relatively dry year (2010), this forested wetland respired a total of about 2000 g CO2-C m(-2)y(-1) annually, 51% as R-s, 37% as R-agp, and 12% as R-CWD. During non-flooded periods R-s contributed up to 57% of R-e and during flooded periods R-asp contributed up to 69%. The contribution of R-e to R-e increased by 2.4% for every cm of decrease in water level at intermediate water table level, and was nearly constant when flooded or when the water level more than 15 cm below ground. The contrasting sensitivity of different respiration components highlights the need for explicit consideration of this dynamic in ecosystem and Earth System Models.
dc.language.isoen
dc.publisherElsevier Masson
dc.subjecthydrology
dc.subjectchamber flux
dc.subject.enforested wetland
dc.subject.enmicrotopography
dc.subject.enrespiration
dc.subject.eneddy covariance flux
dc.title.enHydrology and microtopography control carbon dynamics in wetlands: Implications in partitioning ecosystem respiration in a coastal plain forested wetland
dc.typeArticle de revue
dc.identifier.doi10.1016/j.agrformet.2017.08.022
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalAgricultural and Forest Meteorology
bordeaux.page343-355
bordeaux.volume247
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02628332
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02628332v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Agricultural%20and%20Forest%20Meteorology&rft.date=2017&rft.volume=247&rft.spage=343-355&rft.epage=343-355&rft.eissn=0168-1923&rft.issn=0168-1923&rft.au=MIAO,%20Guofang&NOORMETS,%20Asko&DOMEC,%20Jean-Christophe&FUENTES,%20Montserrat&TRETTIN,%20Carl%20C.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée