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Revista Chapingo serie ciencias forestales y del ambiente
versão On-line ISSN 2007-4018versão impressa ISSN 2007-3828
Resumo
PARRA-ALVAREZ, Joaquín; GRANADOS-SANCHEZ, Diódoro; GRANADOS-VICTORINO, Ro L. e 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.
Palavras-chave : Pinus; pinyon pine forests; plant physiognomy; environmental factors; multivariate analysis.