SciELO - Scientific Electronic Library Online

vol.24 issue2Effect of pretreatment on germination of seeds of Eucryphia glutinosa (Poepp. et Endl.) Baillon author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Bosque (Valdivia)

On-line version ISSN 0717-9200


DRAKE, FERNANDO; ACUNA, EDUARDO  and  SALAS, SOLEDAD. Retrospective evaluation to determine a thinning opportunity in a 24-year-old Douglas-fir stand. Bosque (Valdivia) [online]. 2003, vol.24, n.2, pp.85-91. ISSN 0717-9200.

A methodology to determine the thinning opportunity in an unmanaged 24-year-old Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) stand was studied. Starting from information on cumulative growth and the mean annual increment (MAI) of the diameter at breast height (DBH), the age at which the maximum MAI was reached was determined. The basal area by hectare at which the maximum MAI was reached was then retroprojected. Considering the methodology used, a thinning program was proposed in which 775 trees per hectare were left. Four years after intervention, the stand effect of thinning on the remaining trees was evaluated. The number of trees remained constant and there was no presence of mortality. The basal area grew by 4.8 m3/year on average, with a cumulative annual increment of 28.35 m3/ha per year, which was 40.00 m3/ha per year in the last four years.

Keywords : forest management; thinning; Douglas fir,; Reynolds.

        · abstract in Spanish     · text in Spanish


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License