Short communication: Variation of deadwood density by decay class in Douglas fir (Pseudotsuga menziesii (Mirbel) Franco) stands in Italy

  • Alessandro Casagli Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Agriculture and Environment. Via di Lanciola 12/A, 50125, Firenze, Italy https://orcid.org/0000-0002-4665-6318
  • Isabella De Meo Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Agriculture and Environment. Via di Lanciola 12/A, 50125, Firenze, Italy https://orcid.org/0000-0002-8539-1412
  • Andrea Alfano Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Forestry and Wood. Piazza Nicolini 6, 38123, Trento, Italy https://orcid.org/0000-0001-9939-3382
  • Claudia Becagli Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Agriculture and Environment. Via di Lanciola 12/A, 50125, Firenze, Italy https://orcid.org/0000-0001-5182-2352
  • Alessandro Orlandini Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Agriculture and Environment. Via di Lanciola 12/A, 50125, Firenze, Italy https://orcid.org/0000-0002-2651-4494
  • Alessandro Paletto Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Forestry and Wood. Piazza Nicolini 6, 38123, Trento, Italy https://orcid.org/0000-0001-8708-3723
Keywords: lying deadwood, decomposition rate, decay classes, basic density, carbon pool

Abstract

Aim of the study: To estimate fresh and basic density values of Douglas fir deadwood for the five decay classes used in the National Forest Inventories (NFIs).

Area of study: Rincine forest in Tuscany region (Italy).

Material and methods: 140 samples of Douglas fir deadwood (28 for each decay class; 14 of which were collected in summer and 14 in winter) were collected and analysed in the laboratory. The samples were weighed fresh, then placed in the oven for 3 days at 60°C. Afterwards the samples were weighed dried. The laboratory data were used to estimate moisture content (%), fresh and basic density by decay class.

Main results: The results showed that the trend of basal density decreased from 1st to 5th decay class (0.43 g cm-3, 0.39 g cm-3, 0.37 g cm-3, 0.29 g cm-3 and 0.20 g cm-3). An average basic density of 0.34 g cm-3 could be used in future studies concerning the estimation of C-stock in Douglas fir deadwood.

Research highlights: The moisture content of all decay classes of lying deadwood is influenced by the season (winter vs. summer) and consistent with the local climate regime.

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Published
2022-04-28
How to Cite
CasagliA., De MeoI., AlfanoA., BecagliC., OrlandiniA., & PalettoA. (2022). Short communication: Variation of deadwood density by decay class in Douglas fir (Pseudotsuga menziesii (Mirbel) Franco) stands in Italy. Forest Systems, 31(2), eSC04. https://doi.org/10.5424/fs/2022312-19186
Section
Short communications