Caracterización dasométrica e índice de sitio en plantaciones de caoba en Tabasco, México

Resumen

A dasometric characterization was made and the site quality was determined in eight mahogany plantations, in permanent plots established in the Tropical region of Mexico. Plantations studied were about 7 to 16 years old, starting densities of plantations from 156 to 1111 tree.ha-1; survival from 40% to 100%, dominant height from 4,39 m to 23,45 m, basal area from 2,3 m²ha-1 to 15,7 m²ha-1, volume of wood with bark from 14 m2ha-1 to 185 m3ha-1, Reineke index from 176 to 505. With the dasometric characterization basis, it was determined that plantations with increased productivity are located in the area of Chontalpa. To determine the quality of mahogany plantations areas, several models were tested: Bertalanffy, Chagoya, Logistics, Monomolecular, Weibull, Korf and Wescom. The Korf model resulted in a best fit with a probability of (a . 0,05). An equation was determined to evaluate the index site of mahogany, site index values for mahogany in the State of Tabasco were classified as: low (11,5 m), medium (14,5 m) and high (17,5 m) with a base of 10 year sold trees. With the basis of the obtained results, the potential productivity of this species may be considerer for future plantations in the areas with the greatest possibilities.