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Models to support eucalyptus plantations management under a changing environment
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Orientador(es)
Resumo(s)
The objective of this work was the development of a tool to support eucalyptus stands
management with the capacity of predicting forest development under different management
options, thus providing forest managers with useful information in the form of variable outputs
with interest for forest management. The tool uses the 3-PG model as the basis for growth
predictions so that it can be used under a changing climate.
The first thing to be done was the improvement of the crown ratio equation, taking advantage
of the great amount of available data. With more precise equations, new values of biomass
where estimated and a new set of aboveground biomass equations was developed. Biomass
values are not only an important model output, but also a vital piece in the hybridization of the
GLOBULUS growth and yield model and the 3-PG whole stand process based model. The
linkage of the models resulted in a hybrid model with more detailed outputs that were further
complemented with a diameter distribution model.
The 3-PG fertility ratio is an important parameter of the model, but is estimated in a subjective
way. The improvement with an equation that predicts it from soil characteristics is important
not also because it is a flaw that is recurrently appointed to the model, but also because it will
allow it to be sensible to fertilizations
Descrição
Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia
Palavras-chave
forest management support climate change Eucalyptus globulus process based models 3-PG
Contexto Educativo
Citação
Oliveira, T.S.M.P.A. - Models to support eucalyptus plantations management under a changing environment. Lisboa: ISA, 2015, 169 p.