Akademska digitalna zbirka SLovenije - logo
ALL libraries (COBIB.SI union bibliographic/catalogue database)
  • A cost-benefit analysis of pre-sorting using a feller-buncher in underdeveloped short rotation poplar plantations [Elektronski vir]
    Spinelli, Raffaele, gozdar ...
    Underdeveloped tree crops (more than 30 bone-dry tons ha−1) offer a main harvest of biomass-trees, which lack the size and the form for producing a log. However, about 1/3 of the available stems may ... yield at least one log, which could significantly increase the overall value of the harvest. Under those circumstances, it may make sense to sort log-trees from biomass-trees at an early stage, rather than having a harvester or a processor go through all of the treesonly to toss almost 70 out of 100 trees into the biomass pile. The Authors set up a controlled experiment to quantify the eventual benefit obtained by early pre-sorting, performed by the feller-buncher. Pre-sorting resulted in a 15% productivity loss for the feller-buncher, which was repaid by a 100% productivity increase for the processor. Considering the different hourly cost of the two machines, three Euros were saved for each additional Euro invested in pre-sorting. Pre-sorting made whole-tree harvesting (WTH) a significantly cheaper option than cut-to-length (CTL) , whereas the two systems would be almost equally expensive when no pre-sorting was applied. Pre-sorting would also facilitate multiple-tree delimbing, implemented through the introduction of a chainflail; that is likely to further reduce harvesting cost, returning financial viability to the harvesting of underdeveloped plantations.
    Source: International journal of forest engineering [Elektronski vir]. - ISSN 1913-2220 (Vol. 34, iss. 1, 2023, str. 90-99)
    Type of material - e-article
    Publish date - 2023
    Language - english
    COBISS.SI-ID - 154780675

    Link(s):

    https://doi.org/10.1080/14942119.2022.2107863
    https://www.tandfonline.com/doi/full/10.1080/14942119.2022.2107863
    DOI

Shelf entry