FORESTRY STRUCTURE OF POPULATIONS OF Pseudotsuga menziesii (Mirb.) Franco IN THE STATES OF TLAXCALA AND PUEBLA
DOI:
https://doi.org/10.29298/rmcf.v3i13.490Keywords:
Central Mexico, mensuration distributions, disturb factors, similarity index, mortality rate, Pseudotsuga menziesii (Mirb.) FrancoAbstract
Pseudotsuga menziesii populations in central Mexico are small, fragmented and affected by natural and anthropogenic factors. Little is known about the stand structure of these populations, which limits development of management programs despite the protected status of the species. The objective of this study was to characterize and to compare the stand structure of Pseudotsuga forest in seven locations in the states of Tlaxcala and Puebla. A systematic sampling with circular nestled plots of 0.1, 0.05 y 0.005 ha were used to register stand attributes including diameter at breast height (DBH) of alive, death and stumps of all tree species. Results in basal area and Value of Importance Index showed that all locations are dominated by an association of Pseudotsuga-Quercus sp., and to a less extent by other conifer species. Diameter distribution of Pseudotsuga are non-regular and unbalanced, lacking small (<10 cm) and large (>85 cm) diameter classes. Stands in Tlaxcala showed higher densities of standing death trees and stumps than those of Puebla. A modified Morista’s Index of Similitude suggested the influence of geographic proximity of populations as well as the disturb factors, in shaping observed diameter distributions.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
The authors who publish in Revista Mexicana de Ciencias Forestales accept the following conditions:
In accordance with copyright laws, Revista Mexicana de Ciencias Forestales recognizes and respects the authors’ moral right and ownership of property rights which will be transferred to the journal for dissemination in open access.
All the texts published by Revista Mexicana de Ciencias Forestales –with no exception– are distributed under a Creative Commons License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0), which allows third parties to use the publication as long as the work’s authorship and its first publication in this journal are mentioned
The author(s) can enter into independent and additional contractual agreements for the nonexclusive distribution of the version of the article published in Revista Mexicana de Ciencias Forestales (for example, include it into an institutional repository or publish it in a book) as long as it is clearly and explicitly indicated that the work was published for the first time in Revista Mexicana de Ciencias Forestales.
For all the above, the authors shall send the form of Letter-transfer of Property Rights for the first publication duly filled in and signed by the author(s). This form must be sent as a PDF file to: ciencia.forestal2@inifap.gob.mx
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 International license.
