Investigation of the material resistance and moisture performance of pubescent oak (Quercus pubescens)

Forests are under great pressure due to climate changes. It is forecast that the importance of Mediterranean type forests will significantly increase. Among various types of oak species, pubescent oak (Quercus pubescens) will likely gain ecological and economic importance in the region south of Alps. Although this wood species is well known, there are not much data available about chemical properties and durability. A comprehensive analysis of extractives and durability against wood decay fungi was therefore performed. The results of the chemical analysis revealed that heartwood contains up to 20% of the extractives, with considerable amounts of phenols, including a fairly high concentration of Gallic acid (GAc). Anatomical structure, with high frequency of tylosis, resulted in good water exclusion efficacy. The presence of biologically active extractives and superior water exclusion efficacy resulted in good durability, as shown by basidiomycetes tests. Based on the laboratory data, factors that determine the service life of wood were calculated. Data indicate superior performance in above-ground applications.

Automated summary

Forests are facing great pressure due to climate changes, with Mediterranean type forests projected to increase in importance. Pubescent oak is expected to gain ecological and economic significance in the region south of the Alps. The wood species contains high amounts of extractives, including a significant concentration of Gallic acid, contributing to its durability against wood decay fungi. The anatomical structure with a high frequency of tylosis results in effective water exclusion, leading to good performance in above-ground applications.