Resumen

CABALLERO CRUZ, Prudencia et al. Analysis of the structure and tree diversity of temperate forests of the eastern side of the Iztaccihuatl volcano, Mexico. Rev. mex. de cienc. forestales [online]. 2022, vol.13, n.71, pp.76-102.  Epub 22-Ago-2022. ISSN 2007-1132.  https://doi.org/10.29298/rmcf.v13i71.1253.

The diversity and tree structure of temperate forests in central Mexico that have been under anthropogenic pressures were analyzed. A forest inventory was carried out in three tree communities: pine forest (BP), alder-pine forest (BHP) and pine-oak forest (BPQ), and 50 sites of 500 m2 were randomly established in each one. The mensuration variables obtained were total height and normal diameter ≥7.5 cm. The diameter distribution was analyzed for each community, and the Importance Value Index, the Pretzsch Index, and the diversity indexes were estimated. A total of eleven tree species were recorded, with Pinus hartwegii dominating in BP, Alnus jorullensis in BHP and Pinus ayacahuite in BPQ. BPQ showed the highest density (272 N ha-1) and basal area (32.28 m2 ha-1). The Pretzsch index indicated that BHP and BPQ have a high mean uniformity, and BP has a low mean uniformity in height diversity. The three tree communities showed a positive asymmetric diameter distribution, with more trees in the first diameter classes. The results indicate that anthropogenic interventions in the three tree communities of the forest are evident, and that the area should be properly managed to conserve the structural attributes of this important hydrological and forest reserve. The information generated could serve as a reference to develop conservation or management plans for the species.

Palabras llave : Tree communities; species composition; density; diversity indices; Pretzsch index; IVI.

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