TY - JOUR AU - Xiaoping, Li AU - Chunli, Li AU - Morrell, Jeffrey J. AU - Haishan, He AU - Jian, Qiu AU - Neng, Zhang PY - 2023/01/13 Y2 - 2024/03/28 TI - Variations in decay resistance of cryptomeria fortunei JF - Maderas-Cienc Tecnol JA - Maderas-Cienc Tecnol VL - 25 IS - SE - Article DO - 10.4067/s0718-221x2023000100413 UR - https://revistas.ubiobio.cl/index.php/MCT/article/view/5767 SP - 1-10 AB - <p><em>Cryptomeria fortunei</em> has been widely planted in many cities in southern China. Eventually some of this material may be utilized for timber, but there are relatively few studies of durability of this resource.&nbsp;&nbsp; There is also some question as to whether <em>Cryptomeria fortunei</em> is a synonym for <em>Cryptomeria japonica</em> or Japanese cedar (Sugi). Evaluating the durability of the Chinese resource will help ensure that the decay resistance of this urban plantation resource is properly categorized. The decay resistance of <em>Cryptomeria</em><em> fortunei</em> wood was assessed in soil block and agar block tests against <em>Trametes versicolor</em>, <em>Gloeophyllum trabeum</em> and <em>Rhodonia placenta</em>. Hot water and ethanol extractive contents of the heartwood were determined on sections from various distances above ground and then FTIR spectroscopy was used to characterize the wood before and after fungal exposure. Weight losses in sapwood were consistent with the minimal decay resistance of this portion of the wood. Inner and outer heartwood weight losses were more variable suggesting that the heartwood of this species would be considered to be only moderately durable.&nbsp; Extractives were weakly correlated with decay resistance. FTIR results were more variable, although they suggested heavier attack of lignin components by the brown rot fungi. The results suggest that <em>Cryptomeria</em><em> fortunei</em> would need to be protected from the weather unless supplemental preservative treatments were applied.</p> ER -