Circumferential variation of heartwood and stem quality in maritime pine stems

S. Knapic (Corresponding Author), V. Oliveira, Marika Makkonen, Isabel Pinto-Seppä, H. Pereira

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Maritime pine (Pinus pinaster Ait.) is an important timber and pulpwood species covering about 4 million ha in Portugal, Spain and France. This work studied the cross-sectional distribution of heartwood and sapwood along the stem using 3D modelling on 20 trees. The target was to assess the potential of this species for the industrial production of heartwood sawn products. The maritime pine stems were characterized by wide sapwood of 10 cm, in average, and the presence of heartwood at all height levels with constant diameter up to 35 % tree height, decreasing afterwards. In the radial section, the heartwood follows a circumferential-like shape which changes along the stem. Pith eccentricity index values were low and homogeneous regarding to stem and higher for heartwood. Heartwood cross-sectional shape was constant up to 45 % of total height of the tree and more elongated upwards. The constant heartwood diameter, low taper and pith eccentricity index, and an approximate circular shape up to 10 m height indicated these species' potential to produce solid wood products made out of heartwood
    Original languageEnglish
    Pages (from-to)1007-1014
    JournalEuropean Journal of Forest Research
    Volume133
    Issue number6
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Keywords

    • heartwood
    • forestry
    • maritime pine
    • sawn products
    • taper
    • within-tree variation
    • pith eccentricity index

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