Royer-TardifDelagrangeNoletEtAl2017

Référence

Royer-Tardif, S., Delagrange, S., Nolet, P., Rivest, D. (2017) Using macronutrient distributions within trees to define a branch diameter threshold for biomass harvest in sugar maple-Dominated stands. Forests, 8(2). (Scopus )

Résumé

As the use of forest harvesting residues for energy production gains popularity, debate continues regarding the long-term sustainability of whole tree harvesting (WTH). This practice removes nutrient-rich twigs that only account for a small fraction of harvest residues, emphasising the need to develop nutrient-efficient alternatives to WTH. This study assessed N, P, K, Ca, and Mg distributions within sugar maple (Acer saccharum Marshall) and yellow birch (Betula alleghaniensis Britton) branches of various sizes in order to determine the branch diameter threshold that would represent the best compromise between the quantity of harvested biomass and nutrient losses that were generated. Quantities of nutrients that were exported with harvesting were then modelled at the stand level using different biomass harvest scenarios to explore what factors ultimately drove total quantities of nutrients exported with harvest. We found that the branch diameter threshold for biomass harvesting should be set at 2 cm for most nutrients in both tree species. An exception was Mg in yellow birch, for which the harvesting of branches larger than 10 cm would always generate larger nutrient export than gains in terms of biomass. At the stand scale, we provide evidence that the intensity of biomass harvest (i.e., the number of branch compartments harvested) is the principal factor responsible for the quantity of nutrient that is exported with harvesting. © 2017 by the authors; licensee MDPI, Basel, Switzerland.

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@ARTICLE { Royer-TardifDelagrangeNoletEtAl2017,
    AUTHOR = { Royer-Tardif, S. and Delagrange, S. and Nolet, P. and Rivest, D. },
    TITLE = { Using macronutrient distributions within trees to define a branch diameter threshold for biomass harvest in sugar maple-Dominated stands },
    JOURNAL = { Forests },
    YEAR = { 2017 },
    VOLUME = { 8 },
    NUMBER = { 2 },
    NOTE = { cited By 0 },
    ABSTRACT = { As the use of forest harvesting residues for energy production gains popularity, debate continues regarding the long-term sustainability of whole tree harvesting (WTH). This practice removes nutrient-rich twigs that only account for a small fraction of harvest residues, emphasising the need to develop nutrient-efficient alternatives to WTH. This study assessed N, P, K, Ca, and Mg distributions within sugar maple (Acer saccharum Marshall) and yellow birch (Betula alleghaniensis Britton) branches of various sizes in order to determine the branch diameter threshold that would represent the best compromise between the quantity of harvested biomass and nutrient losses that were generated. Quantities of nutrients that were exported with harvesting were then modelled at the stand level using different biomass harvest scenarios to explore what factors ultimately drove total quantities of nutrients exported with harvest. We found that the branch diameter threshold for biomass harvesting should be set at 2 cm for most nutrients in both tree species. An exception was Mg in yellow birch, for which the harvesting of branches larger than 10 cm would always generate larger nutrient export than gains in terms of biomass. At the stand scale, we provide evidence that the intensity of biomass harvest (i.e., the number of branch compartments harvested) is the principal factor responsible for the quantity of nutrient that is exported with harvesting. © 2017 by the authors; licensee MDPI, Basel, Switzerland. },
    ART_NUMBER = { 41 },
    AUTHOR_KEYWORDS = { Biomass harvest; Branch size; Nutrient content; Nutrient export; Stand modelling; Sugar maple; Yellow birch },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.3390/f8020041 },
    KEYWORDS = { Biomass; Forestry; Harvesting, Biomass harvest; Branch size; Nutrient contents; Nutrient export; Sugar maple; Yellow birch, Nutrients, Acer saccharum; Betula alleghaniensis },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013785798&doi=10.3390%2ff8020041&partnerID=40&md5=c8f74a693dedc55a1a86e5aa3bfd1a85 },
}

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