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Accueil du site → Doctorat → Mexique → Regeneración natural y restauración ecológica postincendio de un bosque mixto en el parque ecológico Chipinque, México

Universidad Autonoma de Nuevo Leon (2010)

Regeneración natural y restauración ecológica postincendio de un bosque mixto en el parque ecológico Chipinque, México

Alanís Rodríguez, Eduardo

Titre : Regeneración natural y restauración ecológica postincendio de un bosque mixto en el parque ecológico Chipinque, México

Auteur : Alanís Rodríguez, Eduardo

Université de soutenance : Universidad Autonoma de Nuevo Leon

Grade : DOCTORADO EN CIENCIAS CON ESPECIALIDAD EN MANEJO DE RECURSOS NATURALES 2010

Résumé
The template forests of the Ecological Park Chipinque (PECh) are of great importance due to the environmental services that provide to the Metropolitan Area of Monterrey. In 1998 a forest fire happened and affected a third of the PECh. In the post fire area an ecological restoration program was realized and an area that regenerated naturally was left as the witness. In 2008 (ten years later), were established sampling plots to evaluate the regeneration of tree vegetation in both areas. The investigation is aimed to respond the influence of the slope exposure and fire severity in the forest structure, as well as to evaluate in a critical way and scientific the restoration actions. The type with a greater presence in the restored and naturally regenerated areas was Quercus. The restored areas presented as more important second species to Pinus pseudostrobus, while this species practically disappeared of the naturally regenerated areas. Areas with different exposure, but with the same restoration treatment (with and within) showed a similarity of 57%, while the ones that shared exposition (NW and NE) had a similarity of the 70%. This suggests that the areas are more associated by the slope exposure of the Sierra Madre oriental that by the ecological restoration treatments. The density of the tree stratum did not show differences (P=0.085) in treatments, while the dominance was smaller (P<0.001) in the area restored area with northeastern exposition. The vertical distribution of the species was similar in the four evaluated areas, showing that they are formed predominantly by two strata (medium and low). Referring to the degree of fire severity (high and average intensity) was observed that the areas present an 81% of likeness that does not exist a significant difference in terms of diversity-abundance (t=1,77 ; g.l.=811), but it modified the density (t=0,040) and crown area (t=0,024), being smaller in the high severity areas.

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