Abstract

RUIZ-AQUINO, Julio Aurelio et al. Effect of timber forest management on the structure and diversity of the Pinus L. forest in Oaxaca state, Mexico. Rev. mex. de cienc. forestales [online]. 2025, vol.16, n.87, pp.100-126.  Epub May 26, 2025. ISSN 2007-1132.  https://doi.org/10.29298/rmcf.v16i87.1492.

Regeneration cutting methods in forest management generate changes in the vegetation structure. The objective was to evaluate two forest management methods and analyze the application of three forestry treatments: group selection, regeneration cutting of parent trees and individual selection (TS) on the structure of stands in Santa María Jaltianguis, Oaxaca state, Mexico. The evaluation was carried out in 2023 in 30 circular sites of 400 m2 in which the tree, shrub and herbaceous stratum were measured, all individuals were identified and the forest inventory variables of greatest interest were considered: diameter at breast height. The TS were differentiated using a generalized linear model and test of means (Tukey, 0.05). The greatest richness was recorded in the rainy season with a total of 49 species belonging to the Asteraceae, Pinaceae, Rosaceae and Fagaceae families; the effect of forestry treatments in the vegetation strata was more evident in herbaceous plants; in the tree stratum, Pinus patula was the species with the highest frequency and greatest importance (IVI), the highest diversity was obtained in the tree stratum, regeneration cutting treatment Shannon=2.25, and the lowest in individual selection cutting in the shrub stratum Shannon=1.27, presenting significant differences. These results are important to consider in the application of TS for decision making in forest management and conservation.

Keywords : Tree stratum; herbaceous; diversity index; Importance Value Index; species richness; forestry treatments.

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