Search results for "Quercus suber L."
showing 4 items of 4 documents
INFLUENZA DEL CLIMA SULLA CRESCITA DEL SUGHERO IN SOPRASSUOLI PRODUTTIVI SICILIANI.
2009
Abstract: Cork oak (Quercus suber L.) is usually dominant in silvopastoral systems in many areas of Sicily, where the trees are debarked periodically for cork production. In spite of the importance of cork and cork oak stands in Sicilian forests and the potential economic scenarios, few research works have been carried out on these systems. Given the importance of cork thickness in cork quality evaluation, the main objective of this work is to study cork growth in cork oak productive stands spread on the north (Nebrodi Mountains) and south-east (Iblei Mountains) of Sicily. Image analysis techniques were used on cork surfaces of transverse sections of planks to measure cork rings. Dendrochro…
Differences of raw cork quality in productive cork oak woods in Sicily in relation to stand density
2010
Differences of raw cork quality, in terms of thickness and porosity, were observed in productive cork oak (Quercus suber L.) stands in the Nebrodi and Iblei mountains of Sicily in relation to stand density. Five study areas were chosen across a range of different stand density satisfying specific sampling requirements among two managed cork oak stands. Analysis of variance using Fisher-Snedecor's F test (p<0,05) were used to identify statistically significant differences of cork quality and sylvicultural, dendrometric and cork stripping parameters between study areas within each stand and also between stands. Relationships between cork quality and sylvicultural and dendrometric parameters w…
The role of forest fire severity on vegetation recovery after 18 years. Implications for forest management of Quercus suber L. in Iberian Peninsula
2016
Wildfires are a widespread phenomenon in Mediterranean environments. Wildfires result in different fire severities, and then in contrasting plant cover and floristic composition. This paper analyses the recovery of the vegetation eighteen years after a wildfire in Catalonia. The Pinus pinaster ssp. forest was affected by three different severities in July 1994, and studied the spring of 1995 and again in 2008. After eighteen years (2012), our research found that burnt sites constitute a dense forest with a broad variety of species, including many young pines, shrubs and herbaceous plants, but that the risk of fire remains very high, due to the large quantity of fuel and the flammability of …
La qualità del sughero: metodologie di valutazione e norme tecniche per il sughero grezzo e per i prodotti derivati.
2007
La possibilità di ritrarre dal sughero prodotti derivati dipende fortemente dalla sua qualità. Il termine «qualità» del sughero non è sostenuto da chiari riferimenti normativi e non esiste, allo stato attuale, una metodologia oggettiva per la sua valutazione univocamente accettata. In questi ultimi anni si sta producendo uno sforzo teso all’oggettivazione di metodologie di valutazione della qualità del sughero attraverso la definizione di norme di classificazione e standardizzazione dei prodotti ritraibili e/o attraverso sperimentazioni concernenti l’applicazione sul sughero grezzo o sui prodotti derivati di particolari tecniche utilizzate in altri campi scientifici e/o su altri materiali. …