In spite of the widespread use of the term “fast-growing species” referred to forest tree species used for biomass production, there are currently no definite references for defining the aforementioned species. It should be also considered that the term is used not only in articles and technical papers, but also in texts that are applicative and/or represent reference standards such as, for example, the measures of Rural Development Plans. A long-established definition by FAO (1967), but with reference to the developing countries, reports: “Fast growing species are considered as those capable of a mean annual increment of at least 10 cubic meters per hectare”. In the meantime, since this definition was published, many other definitions have emerged including “fast growing high yelding” (FGHY), “Short Rotation Forestry” (SRF), “Short Rotation Coppice” (SRC). Naturally, fast growing species indicated for large areas of the planet, for example developing countries, that include wide desert areas and tropical and subtropical areas where the choice and response of usable species is clearly different, resulting in generic and misleading indications. Even for Italy, which has a considerable environmental heterogeneity, the indication of fast growing species is generic, if at least the area of use is not specified. First of all, the Authors made an assessment of the definitions and meanings used up to now in the world to indicate the fast growing species. A nationwide detailed assessment of the works referring to fastgrowing species was then carried out to identify, if indicated, the productivity thresholds. Finally, a detailed assessment was carried out for the Sicilian territory, making an analysis of the literature and unpublished data on the productivity of the different tree species, identifying those that can be considered among the “fast growing species”. Among the investigated species, eucalypts have confirmed to be the most promising trees for the regional context, but there are a number of critical issues that emerged from mistakes often made in the past. There is also the lack of experimentation conducted with modern criteria, and with this the need to deeply revise, in order to establish new afforestation plantings, the planting techniques, the choice of species/clones, etc., adopted in the past afforestations, which had been establish to increase the forest cover of the island.
A dispetto dell’uso diffuso massiccio della locuzione “specie a rapido accrescimento”, riferita a specie utilizzate per la produzione di biomassa, mancano ad oggi riferimenti certi che servano a definire le suddette specie. Si consideri, inoltre, che la locuzione è utilizzata, oltre che in articoli e testi tecnici, anche in testi che hanno carattere applicativo e/o costituiscono norme di riferimento come, ad esempio, le misure dei Piani di Sviluppo Rurale. Una definizione ormai datata della FAO (1967), riferita ai paesi in via di sviluppo, riporta: “Fast-growing species are considered as those capable of a mean annual increment of at least 10 cubic meters per hectare”. Nel frattempo, da quando è stata pubblicata questa definizione, molte altre definizioni sono sorte tra cui “fast growing high yelding” (FGHY), “Short Rotation Forestry” (SRF), “Short Rotation Coppice” (SRC). Naturalmente, le specie a rapido accrescimento indicate per grandi aree del pianeta, ad esempio i paesi in via di sviluppo, che comprendono vaste aree deserte e aree tropicali e subtropicali dove la scelta e la risposta delle specie utilizzabili è necessariamente diversa, si traducono in indicazioni generiche e fuorvianti. Anche per l’Italia, che presenta una notevole eterogeneità ambientale, l’indicazione di specie a rapido accrescimento risulta generica, se non è precisata almeno l’area di utilizzo. Gli Autori hanno innanzitutto compiuto una valutazione delle definizioni e dei significati sino ad oggi utilizzati a livello mondiale per indicare le specie arboree a rapido accrescimento. È stata poi compiuta una valutazione di dettaglio a livello nazionale dei lavori che fanno riferimento a specie a rapido accrescimento per individuarne, se indicate, le soglie di produttività. È stata infine eseguita una valutazione di dettaglio per il territorio siciliano, compiendo un’analisi dei dati di letteratura e inediti sulla produttività delle diverse specie arboree, individuando quelle che possono rientrare tra le specie forestali a rapido accrescimento. Tra le specie analizzate, gli eucalipti rimangono quelle più promettenti per il contesto regionale, ma emergono numerose criticità dipendenti da errori compiuti spesso nel passato. Emerge altresì una mancanza di sperimentazione condotta con criteri moderni, e con questa la necessità di rivisitare profondamente, per la realizzazione di nuovi impianti, le tecniche di impianto, la scelta delle specie/cloni, etc. adottate negli impianti del passato, che erano stati realizzati per aumentare le superfici forestali dell’Isola.
Badalamenti E., La Mantia T., La Mela Veca D.S., Maetzke F., Sala G., Sferlazza S. (2018). Quali sono le specie arboree a rapido accrescimento per la Sicilia?. In IV Congresso Nazionale di Selvicoltura. Il bosco bene indispensabile per un presente vivibile e un futuro possibile. Abstract book (pp. 251-253). Torino : Accademia Italiana di Scienze Forestali.
Quali sono le specie arboree a rapido accrescimento per la Sicilia?
Badalamenti E.
;La Mantia T.;La Mela Veca D. S.;Maetzke F.;Sala G.;Sferlazza S.
2018-01-01
Abstract
In spite of the widespread use of the term “fast-growing species” referred to forest tree species used for biomass production, there are currently no definite references for defining the aforementioned species. It should be also considered that the term is used not only in articles and technical papers, but also in texts that are applicative and/or represent reference standards such as, for example, the measures of Rural Development Plans. A long-established definition by FAO (1967), but with reference to the developing countries, reports: “Fast growing species are considered as those capable of a mean annual increment of at least 10 cubic meters per hectare”. In the meantime, since this definition was published, many other definitions have emerged including “fast growing high yelding” (FGHY), “Short Rotation Forestry” (SRF), “Short Rotation Coppice” (SRC). Naturally, fast growing species indicated for large areas of the planet, for example developing countries, that include wide desert areas and tropical and subtropical areas where the choice and response of usable species is clearly different, resulting in generic and misleading indications. Even for Italy, which has a considerable environmental heterogeneity, the indication of fast growing species is generic, if at least the area of use is not specified. First of all, the Authors made an assessment of the definitions and meanings used up to now in the world to indicate the fast growing species. A nationwide detailed assessment of the works referring to fastgrowing species was then carried out to identify, if indicated, the productivity thresholds. Finally, a detailed assessment was carried out for the Sicilian territory, making an analysis of the literature and unpublished data on the productivity of the different tree species, identifying those that can be considered among the “fast growing species”. Among the investigated species, eucalypts have confirmed to be the most promising trees for the regional context, but there are a number of critical issues that emerged from mistakes often made in the past. There is also the lack of experimentation conducted with modern criteria, and with this the need to deeply revise, in order to establish new afforestation plantings, the planting techniques, the choice of species/clones, etc., adopted in the past afforestations, which had been establish to increase the forest cover of the island.File | Dimensione | Formato | |
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