water capacity of burned wood

Species of deciduous and coniferous trees that naturally occur in temperate climates were selected for the study. The research concerned: European larch (Larix decidua Mill.), silver fir (Abies alba Mill.), Norway spruce (Picea abies (L.) H.Karst), Scots pine (Pinus sylvestris L.), common hornbeam (Carpinus betulus L. .), Black Alder (Alnus glutinosa (L.) Gaertn), European Beech (Fagus sylvatica L.), English Oak (Quercus robur L.) and Small-leaved Linden (Tilia cordata Mill.). The first stage of wood decomposition was analyzed. Water capacity (WS) and water absorption were determined for the sample before burning (unburn, Type N) in the fresh state (condition 1) and in the dry state, i.e. after drying at 105˚C (condition 2) and after burning (burn, Type B) in the fresh state (condition 1) and dry (condition 2). Combustion was simulated in laboratory conditions similar to those used in previous studies (Kupka et al. 2022). The fire simulation was carried out using a propane-butane blowing lamp [Topex 19/G604], with an average combustion temperature of 1,700 degrees Celsius given by the manufacturer. The amount of water storage capacity (WS) on the side surface of dead wood logs was measured based on a series of measurements during which rainfall was simulated. Analyzes of the water absorption (N) of dead wood and dead wood after fire simulation began by weighing all samples before the experiment (weight after 0 hours of N0) and then immersing them in cylinders filled with distilled water. The soaked samples were weighed after 4 hours, 8 hours, 12 hours, 24 hours, 48 hours, 72 hours, and 96 hours. (N4; N8, …, N96). The methodology was modeled on Klamerus-Iwan et al. (2018).