Forest@ - Rivista di Selvicoltura ed Ecologia Forestale

Articoli Scientifici: Confronto tra metodologie di stima della necromassa legnosa in un ceduo invecchiato di leccio

Bianchi L, Brovelli M, Maltoni A, Calamini G — 2013-04-15

Bianchi L, Brovelli M, Maltoni A, Calamini G

CONFRONTO TRA METODOLOGIE DI STIMA DELLA NECROMASSA LEGNOSA IN UN CEDUO INVECCHIATO DI LECCIO

Abstract: Comparison among methods for the assessment of deadwood volume in a former holm oak coppice. The paper aims to compare three methods for the assessment of deadwood volume, i.e., LIS (Line Intersect System), FAS (Fixed Area Sampling), and WM (Weighings Method). The control data are represented by the outputs of Xylometric measurement. The study was carried out in a former holm oak (Quercus ilex L.) coppice located in the nature park of Montioni in southern Tuscany. LIS and FAS overestimated significantly the quantity of deadwood (+12% and +50%, respectively). The error become higher as the minimum threshold sampling increases. The WM, besides the operational complexity of its application, led to more promising and precise results.

Keywords: Deadwood, Sampling Methods, Line Intersect System, Fixed Area Sampling, Mediterranean Coppice

Forest@ 10 (2): 34-42 (2013) - doi: 10.3832/efor0795-010
http://www.sisef.it/forest@/contents/?id=efor0795-010

Articoli Scientifici: Analisi della copertura forestale in ambiente alpino: metodi di stima a confronto

Pastorella F, Paletto A — 2013-04-15

Pastorella F, Paletto A

ANALISI DELLA COPERTURA FORESTALE IN AMBIENTE ALPINO: METODI DI STIMA A CONFRONTO

Abstract: Forest canopy analysis in the Alpine environment: comparison among assessment methods. Forest canopy is an important ecological feature of forest stands and can be expressed as Leaf Area Index (LAI) or canopy cover percentage. LAI is the ratio between leaf area and ground area (m2 m-2) and it can be measured using an angle of 180°. Instead, the canopy cover is the percentage of forest area occupied by the vertical projection of tree crowns; consequently, LAI expresses the canopy closure rather than the canopy cover. This paper focuses on the estimation of LAI and canopy cover percentage in 54 sampling points randomly distributed over the main forest types of Trentino (beech forests, Scots pine forests, Norway spruce forests and European larch forests). The main purpose was the analysis of relationship between LAI and canopy cover percentage, the latter measured with two different techniques: visual estimation and estimation using the spherical densiometer. In the last part of the paper, LAI data collected in the four main forest types of Trentino are compared with values reported in the literature for the same forest types.

Keywords: Leaf Area Index (LAI), Canopy Cover, Hemispherical Images, Visual Estimation, Spherical Densiometer, Trentino

Forest@ 10 (2): 43-54 (2013) - doi: 10.3832/efor0974-010
http://www.sisef.it/forest@/contents/?id=efor0974-010

Commenti & Prospettive: Ricordando il Di Berenger: “Atti in regola e boschi alla malora”

Cetera P — 2013-04-15

Cetera P

RICORDANDO IL DI BERENGER: “ATTI IN REGOLA E BOSCHI ALLA MALORA”

Abstract: Remebering Bérenger’s aphorims: “Documents in good standing and forest to ruin”. Remembering the Adolfo di Bérenger’s aphorism: “documents in good standing and forest to ruin” from the book Studii di Archeologia Forestale. The Author is considered the founder of the Italian forest science. This document tells the history of the head of rangers and the changes of skills and tasks through time. The most likely causes are the variation of the norms and laws implemented and the transfer of some duties from the State to Region.

Keywords: Historical Silviculture, Forest Management, Rangers

Forest@ 10 (2): 55-58 (2013) - doi: 10.3832/efor0948-010
http://www.sisef.it/forest@/contents/?id=efor0948-010

Articoli Scientifici: La conservazione dei boschi a dominanza di farnia del Parco Lombardo Valle del Ticino: risultati a tre anni dall’avvio della sperimentazione e prime indicazioni gestionali

Bianchi L, Caronni F, Giovannini G, Paci M — 2013-02-04

Bianchi L, Caronni F, Giovannini G, Paci M

LA CONSERVAZIONE DEI BOSCHI A DOMINANZA DI FARNIA DEL PARCO LOMBARDO VALLE DEL TICINO: RISULTATI A TRE ANNI DALL’AVVIO DELLA SPERIMENTAZIONE E PRIME INDICAZIONI GESTIONALI

Abstract: The conservation of pedunculate oak (Quercus robur) stands in the territory of Parco Lombardo Valle del Ticino (province of Milano and Pavia): main results and management proposals after three years of testing.. In the territory of “Parco Lombardo della Valle del Ticino” an experiment, aimed to assess the silviculture pattern suitable for the conservation of stands dominated by peduncolate oak, was set up in 2008. Four experimental areas were located, both in “meso-hygrophilous” and “mesophilous” sites, respectively corresponding to: (a): less intense seed felling; (b): more intense seed felling (both of them aimed to promote the natural regeneration); (c): opening of gap (800 m2) followed by artificial regeneration (both protected and non-protected by shelters); (d): control. Three years after the set up of the experiment, the main results may be summarized as follows: (i): both the seed fellings (the more and the less intense felling) produced a process of natural regeneration, at present insufficient to ensure the continuity of the forest canopy cover; (ii): the branchwood released after utilization produced a positive effect on settlement and growth of peduncolate oak seedlings, attributable to the protection both from the roe deer browsing and wild boar acorn consumption; (iii): ventilated shelters (Tubex Ventex®) produced a positive effect on planting stock, both in terms of survival and growth; (iv): monitoring over time, especially as regards the analysis of the effects of different types of treatment on the processes of regeneration, can provide indications management extensible in similar populations in the territory of the Parco Lombardo Valle del Ticino.

Keywords: Quercus Robur, Regeneration, Secondary Successions, Silviculture, Sustainable Management

Forest@ 10 (1): 1-13 (2013) - doi: 10.3832/efor0825-010
http://www.sisef.it/forest@/contents/?id=efor0825-010

Articoli Scientifici: Aspetti dendroauxometrici, assortimentali e caratteristiche della necromassa in cedui di castagno

Marziliano P, Iovino F, Menguzzato G, Scalise C, Nicolaci A — 2013-02-04

Marziliano P, Iovino F, Menguzzato G, Scalise C, Nicolaci A

ASPETTI DENDROAUXOMETRICI, ASSORTIMENTALI E CARATTERISTICHE DELLA NECROMASSA IN CEDUI DI CASTAGNO

Abstract: Chestnut (Castanea sativa MILL.) is one of the most important forest tree species in Europe, and it is considered a symbol of the natural vegetation in southern Europe. In Calabria (southern Italy) chestnut forest covers an area of approximately 87000 hectares, most of which (about 80%) managed as coppice. In this study a growth and yield table has been elaborated. Thurthermore, assortment type and quantity of deadwood have been evaluated according to age of coppice and forest fire prevention, respectively. The study site is located in the “Presila of Catanzaro” and the research was carried out in 15 plots; the age of the examined stands ranged from 2 to 50 years old. More than 30000 shoots per hectare were recorded in the first two years after coppicing. As opposed, about 2300 and 1000 shoots per hectare were observed 15 and 50 years after coppicing, respectively. The culmination of the mean annual increment of the forest standing volume (16 m3 ha-1 year-1) was highlighted 25 years after coppicing, while the current annual increment culmination (21 m3 ha-1 year-1) was observed at 15 years. Fifteen years after coppicing, most of the wood production was constituted by small dimension assortments. Twenty five years after coppicing small and large poles were the prevailing assortments while telegraph poles and timber beams increased after 50 years. The amount of deadwood in forest ranged between 11.9 and 68.7 m3 ha-1. The largest component was represented by standing dead shoots. The results show that coppice management can be adopted even if the main purpose of the chestnut stand is the production of large size assortments. In chestnut coppice, highly vulnerable to fire, the reduction of stand density with silvicultural practices (thinning and displacement) is the main way to promote the efficiency of forest and a higher strength and resiliency against forest fire.

Keywords: Chestnut, Growth and Yield Table, Deadwood, Assortment Type, Calabria

Forest@ 10 (1): 14-25 (2013) - doi: 10.3832/efor0839-0010
http://www.sisef.it/forest@/contents/?id=efor0839-0010

Rapporti Tecnici: Cambiamento climatico e Galliformi di montagna: alcune recenti valutazioni in ambito alpino

Brugnoli A — 2013-02-04

Brugnoli A

CAMBIAMENTO CLIMATICO E GALLIFORMI DI MONTAGNA: ALCUNE RECENTI VALUTAZIONI IN AMBITO ALPINO

Abstract: Current climate change, referring as well to the observed rain and temperature patterns as to the increased frequency and intensity of extreme weather conditions, has a deep influence on biotic communities and, in particular, on mountain Grouse. These species show great adaptation to coldness, are highly sedentary and have quite “strict” ecological requirements, when it deals with habitat selection. Moreover, their alpine ranges are dangerously marginal to the main distribution areas, which increases the risk of dramatic changes in occurrence, demography and ecology. However, not all the species will predictably be exposed in the same way to the menace of climate change over the next 50-100 years. This article gives a brief review of the main data acquired in the alpine environment in this matter. It also underlines the utmost need to proceed with research and monitoring activities, in order to effectively adapt and manage conservation strategies on mid-long terms.

Keywords: Climate Change, Grouse, Alps, Conservation, Impact

Forest@ 10 (1): 26-32 (2013) - doi: 10.3832/efor0938-010
http://www.sisef.it/forest@/contents/?id=efor0938-010

Recensioni: Un nuovo testo di Arboricoltura per gli studenti ed i professionisti del settore

Minotta G — 2013-02-04

Minotta G

UN NUOVO TESTO DI ARBORICOLTURA PER GLI STUDENTI ED I PROFESSIONISTI DEL SETTORE

Abstract: An up-to-date and comprehensive textbook of general arboriculture recently published in Italy by Sansavini S, Costa G, Gucci R, Inglese P, Ramina A, Xiloyannis C (eds) is presented. It includes contributions from 44 Authors covering all the main subjects related to the modern arboriculture. The book represents a new reference text for students, professionals and technicians interested in tree sciences.

Keywords: Arboriculture, Tree Sciences, Book review, Italy

Forest@ 10 (1): 33 (2013) - doi: 10.3832/efor0907-010
http://www.sisef.it/forest@/contents/?id=efor0907-010