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hal.structure.identifierTexas A&M University System
dc.contributor.authorNOORMETS, Asko
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorBRACHO, Rosvel
hal.structure.identifierUS Geological Survey Lincoln]
dc.contributor.authorWARD, Eric
hal.structure.identifierVirginia Tech [Blacksburg]
dc.contributor.authorSEILER, John
hal.structure.identifierVirginia Tech [Blacksburg]
dc.contributor.authorSTRAHM, Brian
hal.structure.identifierShenzhen University [Shenzhen]
dc.contributor.authorLIN, Wen
hal.structure.identifierVirginia Tech [Blacksburg]
dc.contributor.authorMCELLIGOTT, Kristin
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierOregon State University [OSU]
dc.contributor.authorGONZALEZ‐BENECKE, Carlos
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorJOKELA, Eric J.
hal.structure.identifierUniversity of Georgia [USA]
dc.contributor.authorMARKEWITZ, Daniel
hal.structure.identifierOklahoma State University [Stillwater] [OSU]
dc.contributor.authorMEEK, Cassandra
hal.structure.identifierFujian Normal University [Fujian]
dc.contributor.authorMIAO, Guofang
hal.structure.identifierUSDA Forest Service Rocky Mountain Forest and Range Experiment Station
dc.contributor.authorMCNULTY, Steve G.
hal.structure.identifierNorth Carolina State University [Raleigh] [NC State]
dc.contributor.authorKING, John S.
hal.structure.identifierAuburn University [AU]
dc.contributor.authorSAMUELSON, Lisa
hal.structure.identifierUSDA Forest Service Rocky Mountain Forest and Range Experiment Station
dc.contributor.authorSUN, Ge
hal.structure.identifierUniversity of Georgia [USA]
dc.contributor.authorTESKEY, Robert
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorVOGEL, Jason
hal.structure.identifierOklahoma State University [Stillwater] [OSU]
dc.contributor.authorWILL, Rodney
hal.structure.identifierNanjing Forestry University [NFU]
dc.contributor.authorYANG, Jinyan
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorMARTIN, Timothy A.
dc.date.accessioned2024-04-08T11:40:18Z
dc.date.available2024-04-08T11:40:18Z
dc.date.issued2021-04-16
dc.identifier.issn0094-8276
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195046
dc.description.abstractNet primary productivity (NPP) and net ecosystem production (NEP) are often used interchangeably, as their difference, heterotrophic respiration (soil heterotrophic CO2 efflux, RSH = NPP−NEP), is assumed a near-fixed fraction of NPP. Here, we show, using a range-wide replicated experimental study in loblolly pine (Pinus taeda) plantations that RSH responds differently than NPP to fertilization and drought treatments, leading to the divergent responses of NPP and NEP. Across the natural range of the species, the moderate responses of NPP (+11%) and RSH (−7%) to fertilization combined such that NEP increased nearly threefold in ambient control and 43% under drought treatment. A 13% decline in RSH under drought led to a 26% increase in NEP while NPP was unaltered. Such drought benefit for carbon sequestration was nearly twofold in control, but disappeared under fertilization. Carbon sequestration efficiency, NEP:NPP, varied twofold among sites, and increased up to threefold under both drought and fertilization.Key PointsSuppressed heterotrophic respiration by drought and fertilization amplified carbon sequestration responses compared to those in productivityCarbon sequestration efficiency increased up to threefold under both drought and fertilizationTrade-off between biomass production and carbon sequestration has implications for forest management for climate mitigation purposesPlain Language SummaryTwo metrics of ecosystem productivity—vegetation biomass accumulation (net primary production, NPP) and net ecosystem carbon gain (NEP)—are often used interchangeably, as their difference, heterotrophic respiration, is assumed a relatively constant fraction of the former. Here, we show that soil heterotrophic respiration responds to water availability (a major climate change variable) and nutrient availability (a major management factor) differently than does NPP, leading to the divergence of NPP and NEP responses to water and nutrient availability.
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.title.enHeterotrophic Respiration and the Divergence of Productivity and Carbon Sequestration
dc.typeArticle de revue
dc.identifier.doi10.1029/2020gl092366
dc.subject.halSciences de l'environnement
bordeaux.journalGeophysical Research Letters
bordeaux.volume48
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue7
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04315610
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04315610v1
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