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Conversion of natural forests to managed forest plantations decreases tree resistance to prolonged droughts

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorKING, John S.
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorWARD, Eric
hal.structure.identifierSouthern Research Station
dc.contributor.authorOISHI, A. Christopher
hal.structure.identifierNicholas School of the Environment and Earth Sciences
dc.contributor.authorPALMROTH, Sari
hal.structure.identifierNorth Carolina State University [Raleigh] [NC State]
dc.contributor.authorRADECKI, Andrew
hal.structure.identifierPacific Northwest Research Station
dc.contributor.authorBELL, Dave M.
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorMIAO, Guofang
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorGAVAZZI, Michael
hal.structure.identifierDepartment of Forest, Rangeland and Fire Sciences
dc.contributor.authorJOHNSON, Daniel M.
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorMCNULTY, Steve G.
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorSUN, Ge
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorNOORMETS, Asko
dc.contributor.editorAsko Noormets
dc.contributor.editorYann Nouvellon
dc.date.accessioned2024-04-08T12:01:54Z
dc.date.available2024-04-08T12:01:54Z
dc.date.issued2015
dc.identifier.issn0378-1127
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196178
dc.description.abstractEnThroughout the southern US, past forest management practices have replaced large areas of native forests with loblolly pine plantations and have resulted in changes in forest response to extreme weather conditions. However, uncertainty remains about the response of planted versus natural species to drought across the geographical range of these forests. Taking advantage of a cluster of unmanaged stands (85-130 year-old hardwoods) and managed plantations (17-20 year-old loblolly pine) in coastal and Piedmont areas of North Carolina, tree water use, cavitation resistance, whole-tree hydraulic (K-tree) and stomatal (G(s)) conductances were measured in four sites covering representative forests growing in the region. We also used a hydraulic model to predict the resilience of those sites to extreme soil drying. Our objectives were to determine: (1) if K-tree and stomatal regulation in response to atmospheric and soil droughts differ between species and sites; (2) how ecosystem type, through tree water use, resistance to cavitation and rooting profiles, affects the water uptake limit that can be reached under drought; and (3) the influence of stand species composition on critical transpiration that sets a functional water uptake limit under drought conditions. The results show that across sites, water stress affected the coordination between K-tree and G(s). As soil water content dropped below 20% relative extractable water, K-tree declined faster and thus explained the decrease in G(s) and in its sensitivity to vapor pressure deficit. Compared to branches, the capability of roots to resist high xylem tension has a great impact on tree-level water use and ultimately had important implications for pine plantations resistance to future summer droughts. Model simulations revealed that the decline in K-tree due to xylem cavitation aggravated the effects of soil drying on tree transpiration. The critical transpiration rate (E-crit), which corresponds to the maximum rate at which transpiration begins to level off to prevent irreversible hydraulic failure, was higher in managed forest plantations than in their unmanaged counterparts. However, even with this higher E-crit, the pine plantations operated very close to their critical leaf water potentials (i.e. to their permissible water potentials without total hydraulic failure), suggesting that intensively managed plantations are more drought-sensitive and can withstand less severe drought than natural forests.
dc.language.isoen
dc.publisherElsevier
dc.subjectpine
dc.subjecttranspiration
dc.subject.encavitation
dc.subject.endrought
dc.subject.ennatural stands
dc.subject.enroots
dc.title.enConversion of natural forests to managed forest plantations decreases tree resistance to prolonged droughts
dc.typeArticle de revue
dc.identifier.doi10.1016/j.foreco.2015.04.012
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.subject.halSciences de l'environnement/Milieux et Changements globaux
bordeaux.journalForest Ecology and Management
bordeaux.page58-71
bordeaux.volume355
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02637878
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02637878v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Forest%20Ecology%20and%20Management&rft.date=2015&rft.volume=355&rft.spage=58-71&rft.epage=58-71&rft.eissn=0378-1127&rft.issn=0378-1127&rft.au=DOMEC,%20Jean-Christophe&KING,%20John%20S.&WARD,%20Eric&OISHI,%20A.%20Christopher&PALMROTH,%20Sari&rft.genre=article


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