Above-ground biomass accumulation and growth in a marginal nothofagus macrocarpa forest in Central Chile
Abstract
Nothofagus macrocarpa forests are situated in the northern limit
of Nothofagus genus distribution in South America. Data related
to their growth conditions are insufficient. Above-ground biomass
accumulation and growth were evaluated in a secondary
N. macrocarpa forest located in the northern limit of the species
natural distribution. Nine plots were established, and 240
sprouts of different diameter classes were harvested. The age
and volume of each sprout were determined, and tree growth in
terms of diameter and height was also analyzed. Total aboveground
biomass was measured in a subsample of 62 sprouts, according
to the components: stem, branches and foliage. The forest
had an uneven-aged coppice structure, the mean age being
39 years. Average diameter growth rate was 0.23cm/year, height
growth rate was 32.3cm/year and the mean volume growth rate
was 0.43m3·ha-1/year, which are lower than the values indicated
for other species of the same genus. The accumulated above
ground biomass reached 35.2ton·ha-1. The low values measured
are explained by the marginal condition of the forest as well as
its degradation status due to anthropogenic activity. This condition
requires of setting measures that assure the survival and
the recovery of this forest.
Materias
Biomass FunctionsDocumento no disponible en formato digital. Consultar en biblioteca INFOR: Contacto

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