RT info:eu-repo/semantics/doctoralThesis
T1 Small-scale early effects of thinning on the topsoil in Scots Pine-Pyrenean Oak mixed stands approached through new computational tools
A1 Martínez Miguel, Marina
A2 Universidad de Valladolid. Escuela Técnica Superior de Ingenierías Agrarias
K1 Thinning
K1 Mixed forest
K1 Pinus sylvestris
K1 Quercus pyrenaica
K1 Topsoil
K1 Aclareo
K1 Bosque mixto
K1 Capa  superficial del suelo
K1 Modelos lineales mixtos
K1 Manejo forestal
K1 3106.08 Silvicultura
AB Mixed pine-oak forests have emerged as a significant component of the forest landscape in Spain. Despite their wide distribution and ecological and socioeconomic value, there is no specific silvicultural approach for these ecosystems. This study investigates the effects of cutting and species mixing on surface soil properties in these mixed Scots pine (Pinus sylvestris L.) and oak (Quercus pyrenaica Willd.) forests in northwestern Spain on a short-term, small-scale basis.For this purpose, an experimental design was established with three types of treatments: control without thinning, moderate felling (25% of the basal area) and intense felling (50% of the basal area). Data collection was carried out in 36 plots of 10x10 m, groupedinto three rectangular areas of 50x40 m, corresponding to each treatment. Samples of the first 5 cm of soil were analysed one year after the treatments to evaluate their physical and chemical properties, collecting data on bulk density, porosity, available water, pH, electrical conductivity, readily oxidisable carbon, available phosphorus, cation exchange capacity, total organic carbon, total nitrogen and exchangeable cations.For the data analysis, one-way analysis of variance was used as usual, together with new computational tools using mixed models to identify and quantify the effects of thinning and investigate their interaction with the level of tree species mix. These new techniques made it possible to examine the complex relationships between forest characteristics and soil variables.This study contributes to the development of sustainable forest management strategies against climate change impacts in mixed pine-oak forests, which have high ecological and socio-economic value in Spain, providing valuable information on the short-term response of soils to forest management practices in this type of system.The results of this study are particularly important given that species such as Quercus pyrenaica are highly sensitive to climate change and that the Pinus - Quercus mixture may be a suitable afforestation strategy to partially compensate for productivity losses and improve their adaptability.
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/81460
UL https://uvadoc.uva.es/handle/10324/81460
LA spa
NO Departamento de Ciencias Agroforestales
DS UVaDOC
RD 14-ene-2026