Alternativas de modelagem para projeção do crescimento de eucalipto em nível de povoamento

• Autor(a) principal: Alcântara, Aline Edwiges Mazon de
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3102
• topic: Modelo de Clutter; Eucalipto; Capacidade produtiva; Crescimento em área basal; Clutter model; Eucalyptus; Productive capacity; Growth in basal area; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::MANEJO FLORESTAL

This study was conducted using data from permanent eucalypt plots in continuous forest inventories, conduction in clone population eucalyptus. The objective was to develop and propose approaches to modeling forestry population levels and evaluate some existing models. The models and approaches developed were applied and the results were compared with those obtained from the Clutter model in its most usual form (alternative 1). In the second alternative the future basal area was expressed in function of age and dominant height at the current age instead of the site index. The third considered that the site index of the basal area equation was replaced by the dominant height in the future age, constituting a system of three equations. In the fourth the increase in future basal area was estimated in function of the current ages and future and site index.The fifth alternative was employed considering all data, including plots that were measured only once. In this case the following independent variables were included: age and site index for the estimation of basal area and age, site index and basal area to estimate volume. In alternatives 1, 2, 3 and 24 functional relationships from the original model of Clutter (1963). Based on the results it was concluded that the site index, in the projection equation of the basal area proposed by Clutter (1963), can be replaced by the dominant height at the same age without loss of efficiency and accuracy.Plots measured only once may be used together with plots possessing more than one measurement to adjustment variable density models without loss of efficiency. It is always necessary to test different alternatives and approaches for grouth and yield modeling since there is no one alternative that can be applied to all situations.