Cryptomeria japonica biomass was obtained monthly from forest lumbering operations at São Miguel, Terceira and Pico (Azores), between May 2018 and June 2020. C japonica stands with different ages (2 to ±50 years), grown in different soil types (lithosol and andosol) and at different altitudes (200 to >800 m) were used. The chemical composition of 118 C japonica essential oil (EO) samples, plus 1 sample from an EO solid deposit, were analyzed by gas chromatography and gas chromatography–mass spectrometry. Chemical composition cluster analysis showed 2 clusters, cluster I and II, with no chemical correlation. Cluster I grouped all 117 EO samples that resulted from extraction of branches and foliage with, or without, strobili, from strobili, and from the solid deposit sample. Cluster II grouped the 2 samples of EO isolated from wood, with a markedly different composition. Cluster I showed 5 subclusters (Ia-Ie). The degree of chemical correlation between the samples in these subclusters varied between moderate (subclusters Id and Ie), high (subclusters Ib and Ic), and very high (subcluster Ia). Of the 119 samples, 94 (79% of the total) were included in subcluster Ia, with 66 samples from São Miguel, 2 from Terceira, and 26 from Pico, showing a yield range from 0.1% to 0.4% (v/w). All these samples, with a high chemical correlation, were obtained by steam distillation from branches and foliage with, or without, female or male strobili, or both. This subcluster did not show any grouping pattern regarding the collection month, the altitude (200 to >800 m), the soil type (lithosol, andosol, or its subtypes), or the wood age (±30 to ±50 years). Subcluster Ia was characterized by the dominance of α-pinene (13%-43%), sabinene (5%-25%), phyllocladene (2%-22%), limonene (2%-16%), kaurene (traces-13%), elemol (1%-11%), and terpinen-4-ol (1%-7%). The determination of the concentration limits of the EOs representative components confirmed the homogeneity of C japonica EO, obtained from plant material collected in the 3 Azores islands, despite the variability in the range of some diterpenes that deserves further study. This study allowed for the determination of the concentration limits of the EOs representative components, with the purpose of adding value to C japonica EO, obtained from forest lumbering.

柳杉从森林在圣米格尔，特塞拉和Pico（亚速尔群岛）伐木作业每月获得的生物量月2018年和2020年六月间Ç粳稻代表不同年龄（2〜±50岁），在不同的土壤类型种植（渣土和andosol) 和不同的海拔高度 (200 到 >800 m) 被使用。118 C粳稻的化学成分通过气相色谱法和气相色谱-质谱法分析精油 (EO) 样品以及来自 EO 固体沉积物的 1 个样品。化学成分聚类分析显示 2 个聚类，聚类 I 和 II，没有化学相关性。聚类 I 将所有 117 个 EO 样品分组，这些样品来自提取树枝和树叶，有或没有 strobili，来自 strobili 和固体沉积物样品。聚类 II 将 2 个从木材中分离出的 EO 样品归为一组，它们的成分明显不同。集群 I 显示了 5 个子集群（Ia-Ie）。这些子群中样本之间的化学相关程度在中等（子群 Id 和 Ie）、高（子群 Ib 和 Ic）和非常高（子群 Ia）之间变化。在 119 个样本中，94 个（占总数的 79%）包含在子集群 Ia 中，其中 66 个样本来自圣米格尔，2 来自 Terceira，26 来自 Pico，显示产率范围为 0.1% 至 0.4% (v/w)。所有这些具有高度化学相关性的样品都是通过从带有或不带有雌性或雄性 strobili 或两者的枝条和树叶中蒸汽蒸馏获得的。该亚群在采集月份、海拔（200 至 >800 m）、土壤类型（岩溶胶、山溶胶或其亚型）或木龄（±30 至 ±50 年）方面没有显示任何分组模式。亚簇 Ia 的特征是 α-蒎烯 (13%-43%)、槭烯 (5%-25%)、叶绿素 (2%-22%)、柠檬烯 (2%-16%)、羽衣二烯（痕量- 13%)、elemol (1%-11%) 和 terpinen-4-ol (1%-7%)。EOs 代表组分浓度限值的确定证实了 具有高化学相关性，通过蒸汽蒸馏从带有或不带有雌性或雄性 strobili 或两者的树枝和树叶中获得。该亚群在采集月份、海拔（200 至 >800 m）、土壤类型（岩溶胶、山溶胶或其亚型）或木龄（±30 至 ±50 年）方面没有显示任何分组模式。亚簇 Ia 的特征是 α-蒎烯 (13%-43%)、槭烯 (5%-25%)、叶绿素 (2%-22%)、柠檬烯 (2%-16%)、羽衣二烯（痕量- 13%)、elemol (1%-11%) 和 terpinen-4-ol (1%-7%)。EOs 代表组分浓度限值的确定证实了 具有高化学相关性，通过蒸汽蒸馏从带有或不带有雌性或雄性 strobili 或两者的树枝和树叶中获得。该亚群在采集月份、海拔（200 至 >800 m）、土壤类型（岩溶胶、山溶胶或其亚型）或木龄（±30 至 ±50 年）方面没有显示任何分组模式。亚簇 Ia 的特征是 α-蒎烯 (13%-43%)、槭烯 (5%-25%)、叶绿素 (2%-22%)、柠檬烯 (2%-16%)、羽衣二烯（痕量- 13%)、elemol (1%-11%) 和 terpinen-4-ol (1%-7%)。EOs 代表组分浓度限值的确定证实了 该亚群在采集月份、海拔（200 至 >800 m）、土壤类型（岩溶胶、山溶胶或其亚型）或木龄（±30 至 ±50 年）方面没有显示任何分组模式。亚簇 Ia 的特征是 α-蒎烯 (13%-43%)、槭烯 (5%-25%)、叶绿素 (2%-22%)、柠檬烯 (2%-16%)、羽衣二烯（痕量- 13%)、elemol (1%-11%) 和 terpinen-4-ol (1%-7%)。EOs 代表组分浓度限值的确定证实了 该亚群在采集月份、海拔（200 至 >800 m）、土壤类型（岩溶胶、山溶胶或其亚型）或木龄（±30 至 ±50 年）方面没有显示任何分组模式。亚簇 Ia 的特征是 α-蒎烯 (13%-43%)、槭烯 (5%-25%)、叶绿素 (2%-22%)、柠檬烯 (2%-16%)、羽衣二烯（痕量- 13%)、elemol (1%-11%) 和 terpinen-4-ol (1%-7%)。EOs 代表组分浓度限值的确定证实了 和萜品烯-4-醇 (1%-7%)。EOs 代表组分浓度限值的确定证实了 和萜品烯-4-醇 (1%-7%)。EOs 代表组分浓度限值的确定证实了C japonica EO，从在 3 个亚速尔群岛收集的植物材料中获得，尽管一些二萜的范围存在差异，值得进一步研究。该研究允许确定EO代表成分的浓度限值，目的是为从森林采伐中获得的C japonica EO增加价值。