Estimativas de altura para Khaya ivorensis A. CHEV plantado no norte de Minas Gerais

Abstract

The Khaya ivorensis A. CHEV species, the African Mahogany, has become known for the beauty of its wood and its physical and mechanical properties. It is a species that has little knowledge about its management, and since the areas planted with this species have been growing in the last years, it is necessary to supply the lack of information and technical and scientific studies for the species. The objective of this work was to adjust hypsometric relationships for Khaya ivorensis by evaluating four models and three adjustment strategies. For the adjustment of the equations a forest inventory database was used with 38 circular plots of 1018 m2 systematically distributed in 11 plots and 4 strata containing the measurements of diameter at 1,30 meters of height and total height of the two central rows of the plots. The forest inventory data were collected in plantations of Khaya ivorensis, aged 4, 7, 8 and 9 years, located in the north of Minas Gerais. The adjustments of the relationships were made to three adjustment strategies: plot, stand and strata, varying the number of trees in each adjustment strategy. For the first strategy were considered 15 trees per plot, in the second, seven trees per plot grouping the data by stand and the third, five trees per plot grouping the data by strata. The best results of the analyzed statistics were obtained for the adjustments by strata measuring five trees per plot and grouping the data by strata, in addition the study presented statistics superior to other works for the same species.