| 马灵玉,吴珽,焦立超,梁龙.基于FT-IR表征的湿地松化学组分径向变化规律及发育阶段判定研究[J].中国造纸学报,2026,41(3):251-260 |
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| 基于FT-IR表征的湿地松化学组分径向变化规律及发育阶段判定研究 |
| Radial Variation Patterns of Chemical Components and Developmental Stages Identification of Pinus Elliottii Based on FT-IR Characterization |
| 投稿时间：2026-07-22 修订日期：2026-08-26 |
| DOI：10.11981/j.issn.1000-6842.2026.03.251 |
| 中文关键词: 湿地松 红外光谱 先验约束高斯混合模型 幼龄材 成熟材 |
| Key Words:Pinus elliottii infrared spectroscopy prior-constrained Gaussian mixture model juvenile wood mature wood |
| 基金项目:中央公益性科研院所基金基础研究项目CAFYBB2024MA006科技创新2030-重大项目课题2023ZD0405905中央公益性科研院所基金基础研究项目（CAFYBB2024MA006）；科技创新2030-重大项目课题（2023ZD0405905）。 |
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| 中文摘要: |
| 本研究选取3个20年生湿地松半同胞家系（A04、A05、EB2），以不同生长轮样品为研究对象，探究湿地松化学组分的径向变化规律，并进一步利用先验约束高斯混合模型界定幼龄材与成熟材的发育阶段。结果表明，A05纤维素含量相对较高、木质素含量相对较低，具有更优的制浆潜力；FT-IR分析结果显示，特征峰1 590/1 424峰高比值是区分湿地松幼龄材和成熟材的敏感性参数；先验约束高斯混合模型研究发现，3个湿地松半同胞家系的成熟进程不一致，采用“最大边界”原则确定幼龄材与成熟材的分化阶段为：前8生长轮为幼龄材、第8~13生长轮为过渡材、第13生长轮后为成熟材，且大部分生长轮后验概率>0.8，表明本研究使用的划分模型具有一定的可靠性。 |
| Abstract: |
| This study selected three 20-year-old Pinus elliottii half-sib families （A04， A05， and EB2） and used samples from different growth rings to investigate the radial variation patterns of the chemical components of Pinus elliottii. Furthermore， a prior-constrained Gaussian mixture model was employed to define the developmental stages of juvenile and mature wood. The results indicated that A05 had a relatively high cellulose content and a relatively low lignin content， suggesting superior pulp-making potential Fourier transform infrared spectroscopy （FT-IR） analysis revealed that the peak height ratio of the characteristic peaks at 1590/1424 was a sensitive parameter for distinguishing between juvenile and mature Pinus elliottii. The priori constrained Gaussian mixture model analysis revealed that the maturation processes of the three half-sib families were inconsistent. Applying the “maximum boundary” principle， the differentiation stages between juvenile and mature wood were determined as follows： the first 8 growth rings represented juvenile wood， growth rings of 8th~13th represented transitional wood， and growth rings after the 13th represented mature wood. Furthermore， the posterior probability for most growth rings was >0.8， indicating that the classification model used in this study possessed a certain degree of reliability. |
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