MODELAGEM DO CRESCIMENTO E PRODUÇÃO EM CLASSES DE PRECIPITAÇÃO PLUVIOMÉTRICA PARA Eucalyptus sp.

Veiga de Miranda, Rodrigo Otávio; Nogueira Dias, Andrea; Figueiredo Filho, Afonso; Domingues Soares, Izabele; Pereira da Cruz, Jovane

One of the key steps in modeling of growth and yield is the identification of different sites, which are generally determined by the relation of dominant height and age. However, there are situations in which it becomes interesting to use other variables, such as pluviometric precipitation, due to the high correlation with the productivity of the stand. This research aims to investigate influence of stratification by classes of precipitation in volumetric growth and yield of Eucalyptus sp. We collected data in hybrid stands of Eucalyptus grandis W. Hill ex Maiden x Eucalyptus urophylla S. T. Blake, from the state of Bahia, Brazil; such stands were distributed in seven classes of precipitation, each considered a site accordingly to Dette and Neumeyer (2001) test. We determined the site index for each class of precipitation, using the initial average basal area in each site. The Clutter model was used for modeling, and production estimates compared by Graybill F test. The average precipitation influenced the dominant height growth. The modeling performed by precipitation classes generated similar results to those obtained by modeling without stratification, but more accurately; we can consider it appropriate to estimate production to clonal eucalyptus stands.

Floresta, 2015, Vol 45, Issue 1, p117

0015-3826

Academic Journal

10.5380/rf.v45i1.33664