Intra-ring radial cracks in Sakhalin spruce (Picea glehnii) from artificial forest

Abstract The occurrence of radial cracks in Sakhalin spruce ( Picea glehnii ), differences the degree cracking among five habitats, and relationship between wood density were investigated a total 79 logs collected from sites Hokkaido, Japan. divided into two types: intra-ring that restricted to within an annual ring larger extended beyond single ring. number longitudinal length log varied depending on habitat, it was considered cold temperature conditions winter might affect incidence cracks. results soft X-ray densitometry showed with lower than without It is this low affected