Lumber Potential of Tropical Species in a Mixed Plantation:Assessment at 50 Months

Abstract The use of tropical species in forest plantations is an alternative to supply the demand of good quality wood. However, information regarding the performance of planted tropical species is scarce. The aim of this study was to provide an assessment of the lumber potential of Cariniana legalis (“jequitibá-rosa”), Zeyheria tuberculosa (“ipê-felpudo”) and Cordia trichotoma (“louro-pardo”) in a forest plantation. Three trees per species were sampled at age of 50 months, planted in a mixed stand with 2 x 4 m spacing in Porto Seguro, Bahia, Brazil. We assessed characteristics of the trees, the logs, lumber yield, and partial volumetric shrinkage of wood. Total volumetric shrinkage of ipê-felpudo, jequitibá-rosa and louro-pardo would be around 12.80%, 13.40% and 11.58%, respectively. Among the three species analyzed, louro-pardo had the best performance, followed by ipê-felpudo, while jequitibá-rosa had the worst performance. All species had good performance regarding log quality and dimensional stability of wood.摘要 在人工林营建中采用热带树种，是满足优质木材需求的可行途径，但当前关于人工种植热带树种生长表现的相关资料仍较为匮乏。本研究旨在评估巴西巴伊亚州波尔图塞古鲁港（Porto Seguro）内2×4m株行距混交人工林中3个热带树种的制材潜力，供试树种分别为柔毛钟萼木（Cariniana legalis，当地俗称"jequitibá-rosa"）、栓皮紫葳（Zeyheria tuberculosa，当地俗称"ipê-felpudo"）以及粗毛刺桐（Cordia trichotoma，当地俗称"louro-pardo"）。研究于该林分中选取树龄50个月的各树种各3株，对其树木性状、原木特征、出材率及木材部分体积收缩率展开测定。结果显示，栓皮紫葳、柔毛钟萼木与粗毛刺桐的总体积收缩率分别约为12.80%、13.40%和11.58%。在所分析的3个树种中，粗毛刺桐表现最优，其次为栓皮紫葳，柔毛钟萼木表现最差。所有供试树种在原木品质与木材尺寸稳定性方面均表现良好。