Afficher la notice abrégée

Large loss and rapid recovery of vegetation cover and aboveground biomass over forest areas in Australia during 2019–2020

hal.structure.identifierUniversity of Oklahoma [OU]
dc.contributor.authorQIN, Yuanwei
hal.structure.identifierUniversity of Oklahoma [OU]
dc.contributor.authorXIAO, Xiangming
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
dc.contributor.authorCIAIS, Philippe
hal.structure.identifierCommonwealth Scientific and Industrial Research Organisation [Canberra] [CSIRO]
dc.contributor.authorCANADELL, Josep
hal.structure.identifierUniversity of Copenhagen = Københavns Universitet [UCPH]
dc.contributor.authorBRANDT, Martin
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorLI, Xiaojun
hal.structure.identifierSouthwest University [Chongqing]
dc.contributor.authorFAN, Lei
hal.structure.identifierUniversity of Illinois at Urbana-Champaign [Urbana] [UIUC]
dc.contributor.authorWU, Xiaocui
hal.structure.identifierNational University of Singapore [NUS]
dc.contributor.authorTANG, Hao
hal.structure.identifierUniversity of Maryland [College Park]
dc.contributor.authorDUBAYAH, Ralph
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorDOUGHTY, Russell
hal.structure.identifierUniversity of Oklahoma [OU]
dc.contributor.authorCROWELL, Sean
hal.structure.identifierTsinghua Shenzhen International Graduate School [Shenzhen]
dc.contributor.authorZHENG, Bo
hal.structure.identifierUniversity of Oklahoma [OU]
dc.contributor.authorMOORE, Berrien
dc.date.accessioned2024-04-08T11:47:20Z
dc.date.available2024-04-08T11:47:20Z
dc.date.issued2022-09
dc.identifier.issn0034-4257
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195278
dc.description.abstractEnAustralia experienced multi-year drought and record high temperatures, and massive forest fires occurred across the southeast in 2019 and early 2020. In the fire-affected forest areas, understory and often tree canopies were burned, and in-situ observations in late 2020 reported rapid vegetation recovery, including grasses, shrubs, and tree canopies from burned-but-not-dead eucalyptus trees. Considering the strong fire resilience and resistance of eucalyptus trees and above-average rainfall in 2020, we assessed how much and how quickly vegetation structure and biomass changed from loss to post-fire and drought recovery in 2020 for all forest areas in Australia. Here, we analyzed space-borne optical, thermal, and microwave images to assess changes in the structure and function of vegetation using four vegetation indices (VIs), leaf area index (LAI), solar-induced chlorophyll fluorescence (SIF), gross primary production (GPP), and aboveground biomass (AGB). We found that all eight variables show large losses in 2019, driven by fires and climate (drought and high temperature), but large gains in 2020, resulting from the high resilience of most trees to fire and rapid growth of understory vegetation under wet condition in 2020. In 2019, the forest area has an AGB loss of 0.20 Pg C, which is ~15% of the pre-fire AGB. Attribution analyses showed that both fire and climate (prior and co-occurring severe drought and record high temperatures) are responsible for the AGB loss in 2019, approximately 0.09 Pg C (fire) and 0.11 Pg C (climate), respectively. In 2020, the forest area has a total AGB gain of 0.26 Pg C, composed of 0.22 Pg C from fire-affected forest area and 0.04 Pg C from fire-unaffected forest area. Fire-adapted Eucalyptus forests and above-average annual precipitation in 2020 brought by a moderate La Niña drove the recovery of vegetation cover, productivity, and AGB. The results from this study shows the potential of multiple sensors for monitoring and assessing the impacts of fire and climate on the forest areas in Australia and their post-fire recovery.
dc.language.isoen
dc.publisherElsevier
dc.subject.enForest
dc.subject.enCarbon
dc.subject.enRemote sensing
dc.subject.enForest recovery
dc.subject.enClimate change
dc.subject.enFire
dc.title.enLarge loss and rapid recovery of vegetation cover and aboveground biomass over forest areas in Australia during 2019–2020
dc.typeArticle de revue
dc.identifier.doi10.1016/j.rse.2022.113087
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnement
bordeaux.journalRemote Sensing of Environment
bordeaux.page113087
bordeaux.volume278
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03681659
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03681659v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing%20of%20Environment&rft.date=2022-09&rft.volume=278&rft.spage=113087&rft.epage=113087&rft.eissn=0034-4257&rft.issn=0034-4257&rft.au=QIN,%20Yuanwei&XIAO,%20Xiangming&WIGNERON,%20Jean-Pierre&CIAIS,%20Philippe&CANADELL,%20Josep&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