Temporal interactions among throughfall, type of canopy and thinning drive radial growth in an Iberian mixed pine-beech forest
Fecha
2018Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
Impacto
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10.1016/j.agrformet.2018.01.004
Resumen
Many factors can influence tree growth over time such as different forest management practices, climate or tree-to-tree interactions, especially in mixed forests. We show in this work how the temporal growth patterns for
Scots pine and European beech depend on thinning intensity (0%, 20% and 40% extraction of basal area),
canopy type (pine-beech vs. pine patches), throughfall and their interact ...
[++]
Many factors can influence tree growth over time such as different forest management practices, climate or tree-to-tree interactions, especially in mixed forests. We show in this work how the temporal growth patterns for
Scots pine and European beech depend on thinning intensity (0%, 20% and 40% extraction of basal area),
canopy type (pine-beech vs. pine patches), throughfall and their interactions. To fulfill this objective we
monitored radial growth of both species using band dendrometers during a 6-year long period including two
very dry years. Temporal growth patterns differed between both species. Whereas Scots pine showed two main
peaks of growth in May-June and October, European beech mainly grew from May to early September even
when throughfall was very limited. Effects of thinning on growth generally increased for both species during dry
periods both at the seasonal and annual scales. The treatment with 20% of thinning intensity was the most
effective at the annual scale for enhancing growth of both species. However, increases in growth due to thinning
were much higher in beech than in pine and lasted longer. Thinning effects on pine were higher in mixed canopy
than in pure canopy and appeared to be modulated by throughfall. Global differences in pine growth between
canopy types as a function of throughfall increased during the main growing season as beech canopy developed.
Growth of Scots pine, but not that of European beech, generally increased with throughfall which suggests that
pine might be more dependent for its growth on water from the soil surface layer while beech would depend
more on water from deeper soil layers. Our findings have implications to select the most convenient thinning
treatments and canopy type under a potential climate change scenario characterized by warmer conditions, more
severe droughts and less throughfall. [--]
Materias
Dendrometer,
Forest management,
Growth,
Mixed forest,
Water availability,
Throughfall
Editor
Elsevier
Publicado en
Agricultural and Forest Meteorology 252 (2018) 62-74
Departamento
Universidad Pública de Navarra. Departamento de Ciencias del Medio Natural /
Nafarroako Unibertsitate Publikoa. Natura Ingurunearen Zientziak Saila
Versión del editor
Entidades Financiadoras
We are thankful to the Public University of Navarre for supporting
this study through a grant to fund Cardil's Postdoctoral studies. This
study has been carried out within the framework of the projects
AGL2006-08288 and AGL2009-11287 financed by Ministerio de
Economía y Competividad (Spain). Camarero JJ acknowledges the
support of the Fundiver Spanish project (Spanish Ministry of
Economy and Competitiveness, project CGL2015-69186-C2-1-R).