Hunter’s classification is the most adopted method for describing coarse woody debris (CWD) decay stages; however, wood chemical characterization is often lacking. This study explores the sugar profiles of living silver fir (Abies alba Mill.) trees and CWD samples in Hunter’s five-decay stages, evaluating the trends and variability in sugar content in CWD samples during decomposition. Wood cores from living trees and CWD samples from two different forest sites in Trentino (Italy) were analyzed after extraction using ion-exchange chromatography, equipped with pulsed amperometric and charge aerosol detectors (IC-PAD-CAD). Detailed monosaccharides, disaccharides, and sugar alcohol profiles of living wood and CWD samples were described. Cellobiose, arabinose, maltose, and trehalose showed similar trend in both the sites. Principal component analysis (PCA) highlighted the good capability of sugar profiles to well characterize and discriminate silver fir wood samples among Hunter’s categories of wood decomposition.

中文翻译：

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使用离子色谱法检测的糖代谢物表征银杉木材腐烂类别

Hunter 分类是描述粗木屑 (CWD) 腐烂阶段最常用的方法；然而，通常缺乏木材化学特性。本研究探索了活的银杉 (Abies alba Mill.) 树和 Hunter 五个腐烂阶段的 CWD 样品的糖谱，评估了 CWD 样品在分解过程中糖含量的趋势和变化。使用配备脉冲安培和电荷气溶胶检测器 (IC-PAD-CAD) 的离子交换色谱法提取后，对来自特伦蒂诺（意大利）两个不同森林地点的活树的木芯和 CWD 样品进行了分析。详细描述了活木材和 CWD 样品的单糖、二糖和糖醇谱。纤维二糖、阿拉伯糖、麦芽糖和海藻糖在两个位点显示出相似的趋势。