INVESTIGADORES
MARTINEZ PASTUR Guillermo Jose
artículos
Título:
Timber production of Nothofagus pumilio forests by a shelterwood system in Tierra del Fuego (Argentina). Forest Ecology and Management
Autor/es:
G MARTÍNEZ PASTUR; JM CELLINI; P PERI; R VUKASOVIC; MC FERNANDEZ
Revista:
FOREST ECOLOGY AND MANAGEMENT
Editorial:
Elsevier
Referencias:
Año: 2000 p. 153 - 162
ISSN:
0378-1127
Resumen:
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Nothofagus
pumilio is the most important timber native species from south Patagonia of
Argentina and Chile. The total volume and timber production vary according to
site quality, stocking, growth phase and previous land management. The aim of
this work was to evaluate the existence and the productive potential of wood
for the sawmill industry in a shelterwood seed cut of N. pumilio forests along the range of site classes. Sample plots
were established in three hectares of an old-growth virgin forest without
regeneration patches (SDI 95-131%) along the five classes of site (I to V).
Total stand volumes varied from 400 to 1100 m3/ha and volume density index (ratio of total volume over basal area) varied from 6 to 14 m3/m². The volume yield
present differ significantly among site qualities with log volumes between 40
and 400 m3/ha. The number of timber logs decreases from the better
sites towards the worst (800 logs/ha to 200 logs/ha), as well as their volume
average (0.5 m3/log to 0.2 m3/log). Several published
studies in timber production were compared and discussed with the obtained
results. Considering new alternatives in
the N. pumilio timber management
allow managers to obtain higher harvesting
indexes, increasing the benefits for the forest company and diminishing the
annual wood areas necessary to supply the requirements of the sawmills in
Tierra del Fuego.