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Título
Changes in structural heterogeneity and stand productivity by mixing Scots pine and Maritime pine
Autor
Año del Documento
2017
Editorial
Elsevier
Documento Fuente
Riofrío, J., del Río, M., Pretzsch, H., & Bravo, F. (2017). Changes in structural heterogeneity and stand productivity by mixing Scots pine and Maritime pine. Forest Ecology and Management, 405, 219-228.
Resumo
Mixed-species stands have been studied extensively due to their potentially superior productivity, multi-functionality
benefits and high ecological value compared to pure stands. The higher structural heterogeneity in mixed
stands that can emerge from species interactions could be linked to the relationship between species diversity
and ecosystem functions. We tested whether changes in stand structure also occur in mixtures of species with
similar traits and whether they explain over-yielding patterns. Based on research with 12 triplets of Scots pine
(Pinus sylvestris L.) and Maritime pine (Pinus pinaster Ait.) in the northern Iberian Peninsula (Spain), we provide
evidence that species mixing increased structural heterogeneity and may induce over-yielding in mixed-species
stands compared to monospecific stands. In this mixture of two light-demanding species, we observed that (i)
stand composition influenced the inter-specific crown allometric variation, (ii) structural heterogeneity in mixed
stands was caused by both specie-specific traits and species interactions, and (iii) intraspecific and interspecific
differences in both crown size plasticity and size-distribution differentiation were associated with the increased
relative productivity of mixed stands. We detected that crown complementarity and vertical stratification in the
canopy space is a crucial mechanism for enhancing ecosystem productivity in light-demanding species and could
be related to light interception and light-use. This work improves our understanding of emerging properties in
mixed stands and introduces considerations for properly scaling and tracing mixing effects at individual tree, size
distribution and stand levels.
Materias (normalizadas)
Bosques y silvicultura - España
Pinos-Crecimiento-España
Departamento
Instituto Universitario de Gestión Forestal Sostenible
ISSN
0378-1127
Idioma
eng
Derechos
restrictedAccess
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