Weight tables for individual rebollo oak (Quercus pyrenaica Willd.) coppice shoots in the Central Massif (Central Spain)

  • A. San Miguel Ayanz Universidad Politécnica de Madrid, Madrid
  • A. Fernandez Cancio INIA
  • J. San Miguel Ayanz University of California
Keywords: Biomass, coppice, rebollo oak, Quercus pyrenaica

Abstract

Weight tables for individual rebollo oak (Quercus pyrenaica Willd.) coppice shoots (from roots or stumps) are presented using basal diameter, D (25 cm above floor level) and total height, H, as independent variables in potential (allometric) an linear models. The formers were fitted through non linear regression and the latters through linear regression. D shows a high correlation with total oven dry weight and may be used as the only independent variable in local weight tables built from potential equations. For large areas, it is necessary to also include H in the equation which, this way, offers good estimates for trees belonging to different stands. In this case, similar results have been achieved with potential (allometric) and linear equations and therefore the latter, which is simpler, has been chosen. Finally additional data are presented on bark and oven dry weight percentages for different diametrical classes.

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Published
1992-12-01
How to Cite
San Miguel AyanzA., Fernandez CancioA., & San Miguel AyanzJ. (1992). Weight tables for individual rebollo oak (Quercus pyrenaica Willd.) coppice shoots in the Central Massif (Central Spain). Forest Systems, 1(2), 173-179. https://doi.org/10.5424/492
Section
Research Articles