LiuPengDeGrandpreEtAl2018

Référence

Liu, Z., Peng, C., De Grandpre, L., Candau, J.-N., Zhou, X., Kneeshaw, D.D. (2018) Development of a new TRIPLEX-insect model for simulating the effect of spruce budworm on forest carbon dynamics. Forests, 9(9). (Scopus )

Résumé

The spruce budworm (SBW) defoliates and kills conifer trees, consequently affecting carbon (C) exchanges between the land and atmosphere. Here, we developed a new TRIPLEX-Insect sub-model to quantify the impacts of insect outbreaks on forest C fluxes. We modeled annual defoliation (AD), cumulative defoliation (CD), and tree mortality. The model was validated against observed and published data at the stand level in the North Shore region of Québec and Cape Breton Island in Nova Scotia, Canada. The results suggest that TRIPLEX-Insect performs very well in capturing tree mortality following SBW outbreaks and slightly underestimates current annual volume increment (CAI). In both mature and immature forests, the simulation model suggests a larger reduction in gross primary productivity (GPP) than in autotrophic respiration (Ra) at the same defoliation level when tree mortality was low. After an SBW outbreak, the growth release of surviving trees contributes to the recovery of annual net ecosystem productivity (NEP) based on forest age if mortality is not excessive. Overall, the TRIPLEX-Insect model is capable of simulating C dynamics of balsam fir following SBW disturbances and can be used as an efficient tool in forest insect management. © 2018 by the authors.

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@ARTICLE { LiuPengDeGrandpreEtAl2018,
    AUTHOR = { Liu, Z. and Peng, C. and De Grandpre, L. and Candau, J.-N. and Zhou, X. and Kneeshaw, D.D. },
    TITLE = { Development of a new TRIPLEX-insect model for simulating the effect of spruce budworm on forest carbon dynamics },
    JOURNAL = { Forests },
    YEAR = { 2018 },
    VOLUME = { 9 },
    NUMBER = { 9 },
    NOTE = { cited By 0 },
    ABSTRACT = { The spruce budworm (SBW) defoliates and kills conifer trees, consequently affecting carbon (C) exchanges between the land and atmosphere. Here, we developed a new TRIPLEX-Insect sub-model to quantify the impacts of insect outbreaks on forest C fluxes. We modeled annual defoliation (AD), cumulative defoliation (CD), and tree mortality. The model was validated against observed and published data at the stand level in the North Shore region of Québec and Cape Breton Island in Nova Scotia, Canada. The results suggest that TRIPLEX-Insect performs very well in capturing tree mortality following SBW outbreaks and slightly underestimates current annual volume increment (CAI). In both mature and immature forests, the simulation model suggests a larger reduction in gross primary productivity (GPP) than in autotrophic respiration (Ra) at the same defoliation level when tree mortality was low. After an SBW outbreak, the growth release of surviving trees contributes to the recovery of annual net ecosystem productivity (NEP) based on forest age if mortality is not excessive. Overall, the TRIPLEX-Insect model is capable of simulating C dynamics of balsam fir following SBW disturbances and can be used as an efficient tool in forest insect management. © 2018 by the authors. },
    AFFILIATION = { Department of Biological Sciences, University of Québec at Montreal, Montreal, QC H3C 3P8, Canada; Laurentian Forestry Centre, Canadian Forest Service, Natural Resources CanadaQC G1V 4C7, Canada; Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources CanadaON P6A 2E5, Canada },
    ART_NUMBER = { 513 },
    AUTHOR_KEYWORDS = { Balsam fir; Gross primary productivity; Natural disturbance; Photosynthesis process; Tree mortality },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.3390/f9090513 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052959149&doi=10.3390%2ff9090513&partnerID=40&md5=a2cf33203830903313a429314e7d24df },
}

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