Deadwood in forest stands: assessment of wood basic density in some tree species, Trentino, Italy

Morelli, S; Paletto, Alessandro; Tosi, V.

doi:10.3832/efor0492-0040395

Cited by 13 publications

(12 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to these authors, carbon content in Norway spruce wood is 50.1% of the dry mass and remains stable during the whole decomposition process of deadwood (Bütler et al 2007). Basic wood density of Norway spruce living trees fluctuates between 0.41 g·cm -3 (Bütler et al 2007;Morelli et al 2007) and 0.45 g·cm -3 (Weiss et al 2000). As wood decays, basic wood density decreases steadily (Harmon et al 2000) depending on many factors as it is described e.g.…”

Section: Methodsmentioning

confidence: 99%

Coarse woody debris carbon stocks in natural spruce forests of Babia hora

Merganičová¹,

Merganič²

2010

J. For. Sci.

View full text Add to dashboard Cite

Although coarse woody debris (CWD) represents one of the major carbon pools in natural forest ecosystems, little information is available about its CWD carbon stocks. This study demonstrates the importance of proper estimation of carbon stocks in CWD, which accounts for the decay process of CWD, on an example of a natural mountainous spruce forest located in Central Europe. The study accounts for aboveground coarse woody debris including standing dead trees, lying deadwood, and naturally formed stumps. Basic mensurational information (diameter, height, decay class) about dead wood was collected in the field during the inventory of the forests of the nature reserve Babia hora. The data were used for the calculation of CWD timber volume. In the next step, CWD timber volume was converted to carbon stock using the carbon proportion of 50.1% and density values of decay classes derived from the information published elsewhere. The analysis revealed that when CWD timber volume was converted to carbon stocks using the basic wood density of fresh wood, C stocks were overestimated by 40% or more depending on the developmental stage and elevation. The results also revealed that as the elevation increases, CWD carbon stocks decrease and the differences between the developmental stages diminish.

show abstract

Section: Methodsmentioning

confidence: 99%

Coarse woody debris carbon stocks in natural spruce forests of Babia hora

Merganičová¹,

Merganič²

2010

J. For. Sci.

View full text Add to dashboard Cite

show abstract

“…Una definizione recente di necromassa è quella del Global Forest Resources Assessment (FAO 2004): "necromassa è tutta la biomassa legnosa non vivente non contenuta nella lettiera, in piedi, a terra e nel suolo" (Morelli et al 2007). La necromassa comprende alberi interi morti in piedi e a terra, rami, frammenti di legno, ceppaie (Li Zhou et al 2007).…”

Section: Introduzioneunclassified

“…I metodi di censimento fissano di conseguenza soglie diametriche minime di rilievo relativamente alte. Le linee guida del Protocollo di Kyoto suggeriscono di inglobare nella lettiera tutto il materiale inferiore alla soglia di 10 cm (IPCC 2006, Morelli et al 2007. Questo è il limite inferiore più utilizzato per il campionamento del legno morto (Kruys & Jonsson 1999, Fridman & Walheim 2000, Nilsson et al 2002, Norden et al 2004, FAO 2004; soltanto in pochi casi lo stesso scende a 5 o 2.5 cm (Siitonen et al 2000, Peterken 1996.…”

Section: Introduzioneunclassified

“…La soglia di 10 cm divide, in molte analisi, necromassa grossa (CWD) e fine (FWD). I frammenti di necromassa legnosa di piccole dimensioni vengono di regola considerati parte integrante della lettiera se inferiori a 2.5 cm di diametro (Woldentorp et al 2002, Morelli et al 2007). Altri autori (Hegetschweiler et al 2009) li classificano invece nella categoria necromassa molto fine (VFWD).…”

Section: Introduzioneunclassified

See 1 more Smart Citation

Tree biomass and deadwood density into aged holm oak (Sardinia) and beech coppices (Tuscany)

Bertini¹,

Fabbio²,

Piovosi³

et al. 2012

Forest@

View full text Add to dashboard Cite

Tree biomass and deadwood density into aged holm oak (Sardinia) and beech coppices (Tuscany). Current National Forest Inventory highlight the further increase over the last two decades of coppice area under the position of mature standing crop or in the post-cultivation phase, both being developed throughout the original cultivation area. This pattern, mainly due to the unprofitable fuel wood harvesting, also involved holm oak and beech forests, some of the most diffused forest covers in Sardinia, along the Apennines and pre --Alps. The alternative management option to ageing (the pro-active way of coppice conversion into high forest) has been also practiced in the public domain, but on much smaller areas as compared with those undergoing post-cultivation phase. Aged coppices located into medium-good site classes showed a positive growth pattern resulting in a high, age-related, wood matter storage. At the meantime, regular mortality occurring since former rotation into the fully-stocked shoot populations, stocked up high deadwood amounts, this becoming an outstanding attribute of these types. Carbon storage is becoming one of the major tasks attributable to these systems within the post-cultivation phase. Purposes are here to: (i) estimate living woody and standing + lying deadwood mass densities; (ii) determine deadwood/living mass ratio; (iii) verify lying deadwood decay class; (iv) analyse diversity between two sites aged likewise but different as for geographical location and tree species. A holm oak coppice aged 55 in Sardinia and a beech coppice aged 57 in Tuscany were selected at the purpose. Both stands have been developing the post-cultivation phase since two-three times the traditional rotation and represent the maximum ages in this position. Living and standing dead woody dry mass density were determined in each site by specific allometric functions. Lying deadwood amount was assessed by a sampling design covering systematically the full test area. Three decay classes were determined according to Hunter (modified). The tree species, both shade-tolerant, showed a similar pattern as for time of wood formation and its transfer to deadwood, as well. The main difference consists only in their evergreen and deciduous habit. Auto-ecology seems to be the main driver of stand development as for carrying capacity, mortality rate and survival time into the overstocked stand structures. Leaf standing mass and leaf /thin branches ratio are two and three times higher in holm oak, consistently with its biology. Living woody mass density is made basically by stem and thick branches (88%) and varies from 322 Mg ha i.e., from 9 to 11% of living woody mass. Standing deadwood is 70 to 73% of total amount. As for lying material, the intermediate decay class is prevailing: 74%, (beech) and 66% (holm oak). Both dynamics and age-related data suggest the active role these types may play in soil conservation, improvement of forest quality and carbon storage. The need of a consistent monitoring of the further post-c...

show abstract

“…In Italia, recenti studi di carattere locale in Forest@ 6: 365-375 (2009) (Mason 2002, Travaglini et al 2006, Travaglini et al 2007b) ed in formazioni fore stali del Centro-Sud d'Italia (Di Filippo et al 2004, Barreca et al 2005, Lom bardi et al 2008, Barreca et al 2008, La Fauci & Mer curio 2008, Marziliano 2009) hanno analizzato il campionamento del legno morto sia sotto il profilo quantitativo (volume, massa, numero di pezzi e di stribuzione diametrica) che qualitativo (dinamica, posizione, classe di decadimento e grado di copertu ra al suolo). Morelli et al (2007) hanno recentemente preso in esame alcuni aspetti metodologici per deter minare con maggiore precisione lo stock attuale di carbonio presente nelle necromasse forestali. I risultati del secondo inventario forestale italiano (Inventario Nazionale delle Foreste e dei serbatoi di Carbonio -INFC), recentemente divulgati (INFC 2009), offrono l'occasione per effettuare una prima analisi ad ampio raggio della situazione italiana.…”

Section: Introduzioneunclassified

Deadwood in Italian forests according to National Forest Inventory results

Pignatti¹,

F²,

Gasparini³

et al. 2009

Forest@

Self Cite

View full text Add to dashboard Cite

IntroduzioneFino a poco tempo fa il legno morto nei boschi ve niva considerato dai tecnici forestali e da parte della popolazione un segno di cattiva gestione, per gli ef fetti relativi a possibili attacchi di parassiti, allo svi luppo di incendi o semplicemente per motivi di na tura estetica (Schiegg 1998). Oggi, pur non essendo trascurabili questi aspetti in particolari situazioni, al legno morto viene riconosciuto un ruolo fondamen tale per la conservazione della biodiversità dell'eco sistema, e la sua presenza è divenuta particolarmente significativa per una selvicoltura attenta a salvaguar dare i processi naturali e le specie. Nell'ecosistema forestale, il compartimento del legno morto (Bor mann & Likens 1994) formato da CWD (Coarse Woo dy Debris -Peterken 1996, Oldeman 1990) e da alberi senescenti in vita con cavità marcescenti (Mason et al. 2003) fornisce infatti i microhabitat necessari agli organismi "saproxilici" definiti da Speight (1989) quali organismi "che dipendono, durante una parte del loro ciclo di vita, dal legno morto o in via di de composizione su alberi moribondi e/o morti o su funghi del legno o dalla presenza di altri organismi saproxilici". La presenza degli organismi saproxilici fornisce circa il 30 % della biodiversità di una foresta (Vallauri et al. 2005, Bobiec et al. 2005.Oltre alla conservazione della biodiversità, nei bo schi di montagna su versanti ripidi il legno morto può contribuire, nel breve e medio periodo, alla sta bilità rispetto a fenomeni di rotolamento dei massi verso valle (Berretti et al. 2007) ed alla conservazione del suolo (Hagan & Grove 1999). Il carbonio accumu lato nella necromassa è una componente importante nella contabilità ambientale ed è menzionata tra i cinque pool di carbonio (biomassa epigea, biomassa ipogea, necromassa, lettiera e suolo) dall'Intergovern mental Panel on Climate Change (IPCC 2003).A livello internazionale, la quantità di legno morto rappresenta uno degli indicatori di gestione forestale sostenibile ratificati dalla conferenza interministeria le europea (MCPFE 2002) e il suo rilevamento è com preso nei principali programmi di monitoraggio (Travaglini et al. 2007a), inclusi gli inventari forestali nazionali. In Italia, recenti studi di carattere locale in Forest@ 6: 365-375 (2009) .

show abstract

Deadwood in forest stands: assessment of wood basic density in some tree species, Trentino, Italy

Cited by 13 publications

References 7 publications

Coarse woody debris carbon stocks in natural spruce forests of Babia hora

Coarse woody debris carbon stocks in natural spruce forests of Babia hora

Tree biomass and deadwood density into aged holm oak (Sardinia) and beech coppices (Tuscany)

Deadwood in Italian forests according to National Forest Inventory results

Contact Info

Product

Resources

About