Fig. 1From: Traceability and quality assessment of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) logs: the TreeTrace_Douglas databaseCharacteristics of the four stands with respect to some tree-level variables: the number of rings (on the left) and the mean ring width (in the middle) at breast height (i.e., at 1.30 m high), and the tapering of the long logs by using the variable slenderness12 (on the right)Back to article page