Resumo

SANCHEZ GUTIERREZ, Facundo et al. Timber trees in the cocoa agroforestry system in Cárdenas, Tabasco, Mexico. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.spe14, pp.2711-2723. ISSN 2007-0934.

In order to study the timber resources of the cocoa agroforestry system (cocoa AFS) in Cárdenas, Tabasco, Mexico, 20 sites of 5 000 m2 (100 x 50 m) were sampled, and the trees present in the sites were identified taxonomically and georeferenced. Diameter at breast height (DBH1.3m), total height (Ht) and clean bole height (Hc) were measured on each tree, and DBH was correlated with Ht. Basal area (BA, m2 ha-1) and total and commercial volume were also calculated (VT, VC, m3 ha-1). The products to be obtained from the stand were defined in function of DBH. The 2 856 trees registered belonged to 67 species grouped in 28 families and 58 genera. Erythrina americana Mill., Cedrela odorata L. and Gliricidia sepium (Jacq.) Walp. were the most frequent species. Mean basal area was 18.6 m2 ha-1, ranging from 8.3 to 34.6 m2 ha-1. Mean VT was 192.4 m3 ha-1, ranging from 70.4 to 619.9 m3 ha-1. Average VC was 52.6 m3 ha-1, ranging from 21.86 to 146.6 m3 ha-1, respectively. From the total sampled trees 66.4% were considered useful for sawmilling, having DBH ≥15 cm. Correlation between DBH and height of the tree species in the cocoa AFS was low but significant (r2= 0.48, p = 0.05).

Palavras-chave : Cocoa agroforestry system; dasometry; timber resources; tree diversity.

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