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Ecosystem productivity and evapotranspiration are tightly coupled in Loblolly Pine (Pinus taeda L.) plantations along the coastal plain of the southeastern U.S.

hal.structure.identifierNorth Carolina State University [Raleigh] [NC State]
dc.contributor.authorAGUILOS, Maricar
hal.structure.identifierUSDA Forest Service Rocky Mountain Forest and Range Experiment Station
dc.contributor.authorSUN, Ge
hal.structure.identifierTexas A&M University System
dc.contributor.authorNOORMETS, Asko
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierUSDA Forest Service Rocky Mountain Forest and Range Experiment Station
dc.contributor.authorMCNULTY, Steven
hal.structure.identifierUSDA Forest Service Rocky Mountain Forest and Range Experiment Station
dc.contributor.authorGAVAZZI, Michael
hal.structure.identifierFlorida International University [Miami] [FIU]
dc.contributor.authorPRAJAPATI, Prajaya
hal.structure.identifierNorth Carolina State University [Raleigh] [NC State]
dc.contributor.authorMINICK, Kevan
hal.structure.identifierNorthern Arizona University [Flagstaff]
dc.contributor.authorMITRA, Bhaskar
hal.structure.identifierNorth Carolina State University [Raleigh] [NC State]
dc.contributor.authorKING, John
dc.date.accessioned2024-04-08T11:50:31Z
dc.date.available2024-04-08T11:50:31Z
dc.date.issued2021-08-22
dc.identifier.issn1999-4907
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195388
dc.description.abstractEnForest water use efficiency (WUE), the ratio of gross primary productivity (GPP) to evapotranspiration (ET), is an important variable to understand the coupling between water and carbon cycles, and to assess resource use, ecosystem resilience, and commodity production. Here, we determined WUE for managed loblolly pine plantations over the course of a rotation on the coastal plain of North Carolina in the eastern U.S. We found that the forest annual GPP, ET, and WUE increased until age ten, which stabilized thereafter. WUE varied annually (2–44%), being higher at young plantation (YP, 3.12 ± 1.20 g C kg−1 H2O d−1) compared to a mature plantation (MP, 2.92 ± 0.45 g C kg−1 H2O d−1), with no distinct seasonal patterns. Stand age was strongly correlated with ET (R2 = 0.71) and GPP (R2 = 0.64). ET and GPP were tightly coupled (R2 = 0.86). Radiation and air temperature significantly affected GPP and ET (R2 = 0.71 − R2 = 0.82) at a monthly scale, but not WUE. Drought affected WUE (R2 = 0.35) more than ET (R2 = 0.25) or GPP (R2 = 0.07). A drought enhanced GPP in MP (19%) and YP (11%), but reduced ET 7% and 19% in MP and YP, respectively, resulting in a higher WUE (27–32%). Minor seasonal and interannual variation in forest WUE of MP (age > 10) suggested that forest functioning became stable as stands matured. We conclude that carbon and water cycles in loblolly pine plantations are tightly coupled, with different characteristics in different ages and hydrologic regimes. A stable WUE suggests that the pine ecosystem productivity can be readily predicted from ET and vice versa. The tradeoffs between water and carbon cycling should be recognized in forest management to achieve multiple ecosystem services (i.e., water supply and carbon sequestration).
dc.language.isoen
dc.publisherMDPI
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enevapotranspiration
dc.subject.engross primary productivity
dc.subject.eneddy covariance
dc.subject.encoastal plain
dc.subject.enloblolly pine plantation
dc.subject.enforested wetland
dc.subject.encarbon and water coupling
dc.title.enEcosystem productivity and evapotranspiration are tightly coupled in Loblolly Pine (Pinus taeda L.) plantations along the coastal plain of the southeastern U.S.
dc.typeArticle de revue
dc.identifier.doi10.3390/f12081123
dc.subject.halSciences de l'environnement
bordeaux.journalForests
bordeaux.page1-18
bordeaux.volume12
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue8
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03338790
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03338790v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Forests&rft.date=2021-08-22&rft.volume=12&rft.issue=8&rft.spage=1-18&rft.epage=1-18&rft.eissn=1999-4907&rft.issn=1999-4907&rft.au=AGUILOS,%20Maricar&SUN,%20Ge&NOORMETS,%20Asko&DOMEC,%20Jean-Christophe&MCNULTY,%20Steven&rft.genre=article


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