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Revista Chapingo serie ciencias forestales y del ambiente
versión On-line ISSN 2007-4018versión impresa ISSN 2007-3828
Resumen
PARRA-ALVAREZ, Joaquín; GRANADOS-SANCHEZ, Diódoro; GRANADOS-VICTORINO, Ro L. y VILLANUEVA-MORALES, Antonio. Structural characterization and classification of pinyon pine forests in San Luis Potosí, Mexico. Rev. Chapingo ser. cienc. for. ambient [online]. 2023, vol.29, n.1, pp.61-98. Epub 23-Jun-2024. ISSN 2007-4018. https://doi.org/10.5154/r.rchscfa.2022.03.021.
Introduction:
Plant communities dominated by pinyon pines host abundant species, as they often form ecotones between temperate forests and desert shrublands.
Objectives:
To describe the floristic-structural attributes of pinyon pine forests in San Luis Potosí and to analyze the impact of some environmental factors on the characteristics of these associations.
Materials and methods:
Arboreal plants and shrub flora of nine sites was recorded and analyzed quantitatively using the point-centred quarter method, and qualitatively, using physiognomic profiles and Dansereau diagrams. The groups defined with Jaccard's similarity index were ordered with the environmental factors using a canonical correspondence analysis.
Results and discussion:
The floristic richness was 597 species including Pinus cembroides Zucc., Pinus pinceana Gordon. & Glend., Pinus nelsonii Shaw., Pinus discolor D. K. Bailey & Hawksw. and Pinus johannis Rob.-Pass., which form associations with Juniperus flaccida Schltdl., Yucca spp. and Quercus spp. The floristic similarity depends on several factors including altitude, slope, pH, organic matter and calcium in soil.
Conclusion:
Pinyon pine forests in San Luis Potosí are dominated by five species of Pinus with heterogeneous floristic composition, so each community should be managed according to specific ecological characteristics.
Palabras llave : Pinus; pinyon pine forests; plant physiognomy; environmental factors; multivariate analysis.