SciELO - Scientific Electronic Library Online

 
vol.14 número1MODELAGEM DA ESTRUTURA DE FLORESTAS CLONAIS DE Populus deltoides Marsh. ATRAVÉS DE DISTRIBUIÇÕES DIAMÉTRICAS PROBABILÍSTICASEFEITO DE DIFERENTES MÉTODOS DE CORTE DE CIPÓS NA PRODUÇÃO DE MADEIRA EM TORA NA FLORESTA NACIONAL DO TAPAJÓS índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Ciência Florestal

versão impressa ISSN 0103-9954versão On-line ISSN 1980-5098

Resumo

DELLA-FLORA, Jocelaine Bolzan; DURLO, Miguel Antão  e  SPATHELF, Peter. INDIVIDUAL TREE GROWTH MODEL FOR Nectandra megapotamica (Spreng.) Mez. Ciênc. Florest. [online]. 2004, vol.14, n.1, pp.165-177. ISSN 1980-5098.  https://doi.org/10.5902/198050981791.

Sustainable forest management requires knowledge of forest stock and future growth of forests. In the forest sector growth models are used to predict the growth of trees, stands or forests. In heterogeneous unevenaged forests of Rio Grande do Sul, models on an individual tree basis are appropriate. The present work was established to contribute to the formulation of growth models for one species of the seasonal deciduous forests of Rio Grande do Sul: Nectandra megapotamica. Sampling was realized in the district of Vale Vêneto, near Santa Maria in the years of 1994 and 1997. Vegetation was classified into different successional stages and within these permanent sample plots (uap) were installed. In every sample plot the trees with diameter at breast height above 5 cm were identified, numerated and measured. Additionally, the sociological position and site parameters were estimated. In every uap individual basal area increment, basal area per ha and basal area larger (BAL), as competition indexes, were calculated. Then growth equations were established by using the ‘stepwise’ procedure. The general formulation of the model is: Increment (g/year) = f (dimension, competition, site). The best model for Nectandra megapotamica is: ICA = 0,002084 + 0,000001039 x DBH² - 0,0003498 x Degradation - 0,000375 x Sociological position - 0,00000904 x Soil stonyty - 0,0000103 x BAL.

Palavras-chave : Individual tree growth model; Nectandra megapotamica.

        · resumo em Português     · texto em Português     · Português ( pdf )