|Título: ||Climatic variability and other site factor influences on natural regeneration of Pinus pinaster Ait. in Mediterranean forests|
|Autor: ||Rodríguez García, Encarna|
Bravo Oviedo, Felipe
|Año del Documento: ||2011|
|Documento Fuente: ||Annals of Forest Science; Volume 68, Issue 4, pp 811-823|
|Resumen: ||Background: How environmental factors affect forest regeneration is relevant for
systems that depend partially or fully on natural regeneration.
Objective: P. pinaster post-disturbance regeneration and its relationship to
environmental factors was studied in five P. pinaster forest populations of central
Spain. We expected that 1) different harvesting methods or wildfire would promote
natural regeneration in all populations, but with local and regional variations; 2)
alternatively, different site-dependent stand factors would affect natural regeneration,
although generalized climate effects would be seen. Analysis of variance and
multivariate analysis were used to test differences, to classify ecological variations and
to search for the most important factors affecting regeneration.
Results: The results suggest that the recovery of P. pinaster forest in burnt stands, and
stand replacement in harvested stands can be achieved soon after disturbance if climatic
conditions and other local-site factors (e.g. soil and overstorey structure in harvested
stands, cone bank in burnt stands) make the stand suitable for natural regeneration.
Heterogeneous regeneration can be expected in all cases. The time of precipitation
strongly influenced seedling density and successive regeneration development stages.
Edaphic properties combined with water availability from precipitation can seriously
limit the natural establishment of P. pinaster in xeric systems or during years of intense
drought. Although many factors contribute to high variability natural regeneration was
very effective (successful) in P. pinaster forests, which contributes to the generalization
that natural regeneration is a viable forestry option in many forest types.|
|Materias (normalizadas): ||Pinos|
|Departamento: ||Instituto Universitario de Gestión Forestal Sostenible|
|Aparece en las colecciones:||IUGFS - Artículos de revista|