RT info:eu-repo/semantics/article
T1 Changes in structural heterogeneity and stand productivity by mixing Scots pine and Maritime pine
A1 Riofrío Salazar, José Guillermo
A1 Río Gaztelurrutia, Miren del
A1 Pretzsch, Hans
A1 Bravo Oviedo, Felipe
K1 Bosques y silvicultura - España
K1 Pinos-Crecimiento-España
AB Mixed-species stands have been studied extensively due to their potentially superior productivity, multi-functionalitybenefits and high ecological value compared to pure stands. The higher structural heterogeneity in mixedstands that can emerge from species interactions could be linked to the relationship between species diversityand ecosystem functions. We tested whether changes in stand structure also occur in mixtures of species withsimilar 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 provideevidence that species mixing increased structural heterogeneity and may induce over-yielding in mixed-speciesstands 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 mixedstands was caused by both specie-specific traits and species interactions, and (iii) intraspecific and interspecificdifferences in both crown size plasticity and size-distribution differentiation were associated with the increasedrelative productivity of mixed stands. We detected that crown complementarity and vertical stratification in thecanopy space is a crucial mechanism for enhancing ecosystem productivity in light-demanding species and couldbe related to light interception and light-use. This work improves our understanding of emerging properties inmixed stands and introduces considerations for properly scaling and tracing mixing effects at individual tree, sizedistribution and stand levels.
PB Elsevier
SN 0378-1127
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/26105
UL http://uvadoc.uva.es/handle/10324/26105
LA eng
NO 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.
NO Instituto Universitario de Gestión Forestal Sostenible
DS UVaDOC
RD 24-nov-2024