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

Aim of the study: To estimate fresh and basic density values Douglas fir deadwood for five decay classes used in National Forest Inventories (NFIs).
 Area Rincine forest Tuscany region (Italy).
 Material methods: 140 samples (28 each class; 14 which were collected summer winter) analysed laboratory. The weighed fresh, then placed oven 3 days at 60°C. Afterwards dried. laboratory data to moisture content (%), by class.
 Main results: results showed that trend basal decreased from 1st 5th class (0.43 g cm-3, 0.39 0.37 0.29 cm-3 0.20 cm-3). An average 0.34 could be future studies concerning estimation C-stock deadwood.
 Research highlights: all lying is influenced season (winter vs. summer) consistent with local climate regime.