Fig. 10From: Relationship between pore structure and gas permeability in poplar (Populus deltoides CL.’55/65’) tension woodThe air permeability of six wooden samples (a, b, c, d, e, and f) with longitudinal lengths of 2, 4, 6, and 8 mm. (a) Moso bamboo (Phyllostachys edulis). (b) Poplar (Populus euramericana cv. “Zhonglin46”). (c) Chinese fir (Cunninghamia lanceolata). (d) Lophira alata. (e) Beech (Fagus sylvatica). (f) Okan (Cylicodiscus gabunensis). Black bars represent standard deviation (SD)Back to article page