Trees Outside Forests (TOF) inventory as a tool for landscape analysis and support for territorial planning.During the FAO Expert Consultation on Global Forest Resources Assessment 2000 (Kotka -Finland 1996), the importance of Trees Outside Forests (TOF) and the need for complete and detailed information about these stands were underlined for the first time. Since then and thanks to some pilot studies launched by FAO at the end of the ninenties, the international attention focused on three main topics: the definition of TOF and its classification (linear features, small woods, scattered and individual trees); the effective sampling methods to assess TOF, that are usually rare elements; the ecological role and the economic and social importance of TOF in industrialized and developing countries. Basing on these considerations, the sampling points of the second Italian National Forest Inventory (National Inventory of Forests and Carbon Sinks -INFC) intercepting small woods or linear features were recorded. Consequently, the INFC provides information about a substantial portion of the TOF of the country. Thanks to the availability of these data, a specific study was undertaken, aimed at improving information on TOF features and their role in the landscape. The present paper reports on the first results of this study for four regions of the Central Italy (Lazio, Marche, Toscana and Umbria), where the TOF are particularly significant. IntroduzioneAlberature stradali e di ripa, alberi sparsi, siepi e boschetti in campagna, parchi e giardini urbani costituiscono i principali elementi del territorio associati al concetto di "alberi fuori foresta" (AFF). Questi, pur presentando una diffusione estremamente variabile da contesto a contesto, risultano importanti nella formazione e caratterizzazione del paesaggio, basti pensare al paesaggio "a mosaico" dell'Appennino settentrionale (Sereni 1982) o "a bocage" della Bretagna (Perichon 2004).Il concetto di "alberi fuori foresta" viene dibattuto ufficialmente per la prima volta nel 1996 durante la FAO Expert Consultation on Global Forest Resources Assessment 2000, tenutasi a Kotka in Finlandia, il cui obiettivo principale era quello di fare il punto della situazione sulle tematiche inerenti la valutazione delle risorse forestali e le relative carenze informative. In detta sede non viene formulata una vera e propria definizione di AFF, ma il termine appare come un neologismo coniato per deduzione dalla definizione di foresta data dalla FAO (Bellefontaine et al. 2004). Il termine AFF fa riferimento a tutti quegli alberi o gruppi di alberi presenti su aree non appartenenti alle categorie "foreste" e "altre terre boscate", in quanto non raggiungono le soglie minime di estensione, larghezza, copertura e altezza a maturità fissate per queste categorie (FAO 2001
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