MoreauAutyPothierEtAl2020

Référence

Moreau, G., Auty, D., Pothier, D., Shi, J., Lu, J., Achim, A., Xiang, W. (2020) Long-term tree and stand growth dynamics after thinning of various intensities in a temperate mixed forest. Forest Ecology and Management, 473. (Scopus )

Résumé

In mixed forests, the presence of several tree species with various ecological characteristics leads to complex stand dynamics driven by the species-specific resource-use efficiencies that ultimately drive forest productivity. In this study, we applied the concept of stand growth dominance (GD), together with the growth rates of trees as a function of their allometric expectations (AE) under size-symmetric competition, as an analytical framework to identify the strong and weak contributors to the growth of thinned, mixed larch-spruce-fir stands. We used periodic surveys on approximately 2000 trees over a 25-year period following the application of four different intensities of thinning from below (TI): light (20% BA removed), moderate (30%), heavy (40%) and a control (0%). Results showed that stand GD became more negative with increasing TI and increased with increasing years since thinning except for the 20% TI, for which GD was always positive and had a small increase over time. Twenty-five years after treatment application, shade-intolerant larch trees contributed more to stand growth than their AE, particularly for medium- to large-sized trees, suggesting that they had acquired a large proportion of the available resources. Conversely, the shade tolerant coniferous and broad-leaved trees contributed less than their AE in all treatments, making them weak contributors to the overall stand growth. The analytical framework proposed in this study was useful to identify tree groups that were either weak or strong contributors to stand growth after partial cutting. This information can be used to help prioritise trees for removal during partial cutting operations and to identify successional pathways that will lead to the composition of the future stand. © 2020 Elsevier B.V.

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@ARTICLE { MoreauAutyPothierEtAl2020,
    AUTHOR = { Moreau, G. and Auty, D. and Pothier, D. and Shi, J. and Lu, J. and Achim, A. and Xiang, W. },
    JOURNAL = { Forest Ecology and Management },
    TITLE = { Long-term tree and stand growth dynamics after thinning of various intensities in a temperate mixed forest },
    YEAR = { 2020 },
    NOTE = { cited By 0 },
    VOLUME = { 473 },
    ABSTRACT = { In mixed forests, the presence of several tree species with various ecological characteristics leads to complex stand dynamics driven by the species-specific resource-use efficiencies that ultimately drive forest productivity. In this study, we applied the concept of stand growth dominance (GD), together with the growth rates of trees as a function of their allometric expectations (AE) under size-symmetric competition, as an analytical framework to identify the strong and weak contributors to the growth of thinned, mixed larch-spruce-fir stands. We used periodic surveys on approximately 2000 trees over a 25-year period following the application of four different intensities of thinning from below (TI): light (20% BA removed), moderate (30%), heavy (40%) and a control (0%). Results showed that stand GD became more negative with increasing TI and increased with increasing years since thinning except for the 20% TI, for which GD was always positive and had a small increase over time. Twenty-five years after treatment application, shade-intolerant larch trees contributed more to stand growth than their AE, particularly for medium- to large-sized trees, suggesting that they had acquired a large proportion of the available resources. Conversely, the shade tolerant coniferous and broad-leaved trees contributed less than their AE in all treatments, making them weak contributors to the overall stand growth. The analytical framework proposed in this study was useful to identify tree groups that were either weak or strong contributors to stand growth after partial cutting. This information can be used to help prioritise trees for removal during partial cutting operations and to identify successional pathways that will lead to the composition of the future stand. © 2020 Elsevier B.V. },
    AFFILIATION = { Research Center of Forest Management Engineering of State Forestry and Grassland Administration, School of Forestry, Beijing Forestry University, Beijing, 100083, China; Centre d’étude de la forêt, Département des sciences du bois et de la forêt, Pavillon Abitibi-Price, 2405 rue de la Terrasse, Université Laval, Québec, QC G1V 0A6, Canada; Centre de recherche sur les matériaux renouvelables, Département des sciences du bois et de la forêt, Pavillon Abitibi-Price, 2405 rue de la Terrasse, Université Laval, Québec, QC G1V 0A6, Canada; School of Forestry, Northern Arizona University, Flagstaff, AZ, United States; Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, 15, Beijing, 100091, China },
    ART_NUMBER = { 118311 },
    AUTHOR_KEYWORDS = { Mixed forest; Stand growth dominance; Stand growth dynamics; Thinning; Tree-level allometric expectation },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.foreco.2020.118311 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086632099&doi=10.1016%2fj.foreco.2020.118311&partnerID=40&md5=34994685ccbf01772ba25bf8c385d930 },
}

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