最新刊期

    39 3 2025

      HISTORY OF WOOD SCIENCE

    • MA Qing, HUANG Ruiyan, HAN Yanming, FU Feng
      Vol. 39, Issue 3, Pages: 1-6(2025) DOI: 10.12326/j.2096-9694.2025021
      Evolution of Wood Research in Modern China through the Inaugural Issues “<italic style="font-style: italic">Journal of Forestry</italic>” “<italic style="font-style: italic">Journal of the Forestry Association of China</italic>” “<italic style="font-style: italic">Scientia Silvae Sinicae</italic>”
      摘要:“Scientia Silvae Sinicae” was founded in 1955, and its predecessor can be traced back to the first forestry magazine in China, “Journal of Forestry”, which was founded by the Chinese Forest Society in 1921 and forced to cease publication in 1922. It was inherited by “Journal of the Forestry Association of China” in 1929. On the 70th anniversary of the founding of Scientia Silvae Sinicae in 2025, this article explores the wood science in the inaugural issues of three journals. Forests are crucial to the national economy and people’s livelihood. Timber, as a primary product from forests, holds exceptional important value. Consequently, these pioneer journals dedicated significant shares on timber. This included its national security responsibility related to military industry, its connection to people’s livelihoods through employment, as well as the research activities on wood physical and mechanical properties. The research on wood in three journals was with its own focus and evolved with the times. Wood science, as a discipline within forest research, influenced tree species selection for afforestation, policy formulation and the creation of specialized institutions, eventually solidifying wood science as an independent discipline with dedicated research organizations.  
      关键词:Journal of Forestry;Journal of the Forestry Association of China;Scientia Silvae Sinicae;inaugural issues   
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      KEY SCIENTIFIC RESEARCH BASE OF HISTORICAL BUILDING WOOD

    • WANG Pinbo, WANG Yuchen, WANG Shuangyong, ZHOU Haibin
      Vol. 39, Issue 3, Pages: 7-18(2025) DOI: 10.12326/j.2096-9694.2025008
      Study on Tree Ring Instance Segmentation and Information Detection Based on Improved YOLOv8
      摘要:In climatology, ecology, and archaeology, tree rings hold irreplaceable value for studying environmental change and historical succession. To improve the efficiency and reduce human interference in traditional tree-ring detection, this study proposes DCW-YOLOv8, an instance segmentation model enhanced with dilation-wise residual (DWR) attention module, lightweight CARAFE upsampling, and dynamic Wise-IoU loss. A detection method using model-generated masks is designed to quantify ring counts and widths. The ablation and comparative experiments show DCW-YOLOv8 achieves superior mask mAP (86.4% for mAP@0.50, 53.6% for mAP@0.50∶0.95) versus state-of-the-art models. Attention visualization confirms stronger focus on tree-ring features. Detection results include 86.2% count-accuracy, 70% width measurements within ±0.5 mm error, and a mean width error of 0.295 mm. This model provides a novel automated approach for tree-ring analysis.  
      关键词:tree ring;Deep learning;instance segmentation;ring width;ring number   
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      RESEARCH PAPERS

    • CHEN Jirui, LIU Huan, FANG Xiaolong, ZHANG Wenbiao
      Vol. 39, Issue 3, Pages: 19-25(2025) DOI: 10.12326/j.2096-9694.2025003
      Preparation and Properties of Nanocellulose-Based Flame-Retardant Hydrophobic Aerogel
      摘要:The hydrophilic and flammable properties of cellulose nanofibers (CNF) based aerogels limit their applications. To alleviate these challenges, using CNF as the matrix, both chitosan (CS) and magnesium hydroxide (Mg(OH)2) as the flame-retardant additives, and polydimethylsiloxane (PDMS) as the hydrophobic agent, a hydrophobic and flame-retardant CNF-based aerogel (named CCMP aerogel)was made through ultrasonic homogenization compounding and freeze-drying at a low temperature. The novel constructed CCMP aerogel presented a typical three-dimensional mesh structure and a low density (40.10 mg/cm³). The ultrasonic homogenization treatment evenly distributes CS and Mg(OH)2 on CNF surface. Adding both CS and Mg(OH)2 in the aerogels led limiting oxygen index (LOI) value up to 54.4%. Moreover, the added PDMS results a water contact angle (WCA) of 139.0 ± 1.3° in the hydrophilic CNF-based aerogel. This study provides a new approach for constructing CNF-based flame-retardant hydrophobic aerogels.  
      关键词:cellulose nanofibers;chitosan;aerogel;flame retardant;hydrophobic   
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    • FANG Qingning, CHEN Lei, CHEN Yuan, OU Rongxian, YI Xin, WANG Qingwen
      Vol. 39, Issue 3, Pages: 26-32(2025) DOI: 10.12326/j.2096-9694.2025011
      Manufacturing Process and Mechanical Properties of Bamboo-Plastic Composites Reinforced with Bamboo-Woven
      摘要:In view of the shortcomings of low strength and high brittleness of bamboo-plastic composite materials (BPC), in this study, the hot-pressing molding process was adopted. Four bamboo weaving structures were introduced into the composite materials respectively, namely, cross weaving (CW), twill weaving (TW), mesh weaving (MW), and unidirectional bamboo weaving (UW), to manufacture bamboo-woven reinforced BPC. The results showed that, comparing with the unreinforced BPC, the mechanical properties of three other bamboo-woven reinforced BPC were significantly improved except TW-BPC. Among them, the tensile strength and flexural strength of UW-BPC increased by 108.3% and 81.7% respectively, and the impact strength reached 57.0 kJ/m2, which was approximately five times that of the unreinforced BPC. During the low-speed impact testing, the warp-and-weft structure of bamboo weaving demonstrated significant impact resistance advantages. The peak impact load of MW-BPC at energy level of 10 J was 79.6% higher than that of unreinforced BPC. The research results inspired new ideas for the innovative application of the composite of bamboo and BPC.  
      关键词:bamboo-plastic composite materials;bamboo woven;mechanical properties;impact resistance;hot pressing process;composite materials   
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    • XUE Zhaofeng, SHENG Ye, GUO Renkun, GUO Nan, DONG Shuai
      Vol. 39, Issue 3, Pages: 33-40(2025) DOI: 10.12326/j.2096-9694.2025009
      Effect of Different Temperature Treatments on Impact Mechanical Properties of Bamboo Scrimber in Direction of Perpendicular to Grain
      摘要:Bamboo scrimber is inevitably subjected to impact loads in addition to the static load. Specifically, after the bamboo-scrimber-framed building is damaged by fire, the structure is loaded with the horizontal impact. The defects in the inherent structure may be amplified under the dynamic condition. The previous study on the mechanical properties of bamboo scrimber perpendicular to grain under the static conditions showed the Hopkinson pressure bar system was used to conduct dynamic mechanical performance tests on specimens at different temperatures under impact velocities of 10 m/s, 13 m/s, and 16 m/s, respectively. Experiment results show that when the impact velocity remains constant, the dynamic proportional limit strength of compression, and the dynamic compressive elastic modulus of the bamboo scrimber perpendicular to grain gradually increased as the temperature increased from 20 ℃ to 180 ℃. However, these properties decreased rapidly when the temperature continues increasing up to 280 °C. Based on these findings, a formula for calculating the coefficient of influence on the dynamic proportional limit strength of compression and the dynamic compressive elastic modulus of bamboo scrimber perpendicular to grain under different temperatures was proposed, providing a theoretical basis and technical reference for the engineering application of bamboo scrimber components under high temperature and impact coupling.  
      关键词:bamboo scrimber;impact load;split Hopkinson pressure bar;temperature;loading rate   
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    • Preparation and Performance of Fragrance-Release Engineered Wood Flooring

      KANG Shifei, LAN Shan, LI Shanming, PENG Limin, WANG Supeng
      Vol. 39, Issue 3, Pages: 41-48(2025) DOI: 10.12326/j.2096-9694.2024125
      Preparation and Performance of Fragrance-Release Engineered Wood Flooring
      摘要:To prepare fragrance-release wood flooring, two sandalwood essential oil microcapsule emulsions were added to acrylic coatings: β-cyclodextrin-microcapsule (β-CD-MC) emulsion and melamine-formaldehyde resin-microcapsule (MF-MC) emulsion.These emulsions were thoroughly mixed through physical blending process to create two distinct microcapsule coatings, which were subsequently applied to the surface of engineered wood flooring. The effects of the ratio of microcapsule emulsion, accounting for 5%, 10%, 15%, 20%, and 25% of the coating mass, on the viscosity of the coating and the sustained-release performance were analyzed. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the microscopic morphology and chemical compositions of the essential oil microcapsules, microcapsule coatings, and fragrance-release flooring products. The physical and chemical properties of the flooring were tested. Based on the viscosity test results, the optimized ratios of β-CD-MC emulsion and MF-MC emulsion were 20% and 15%, respectively, yielding viscosity values of 2 817.57 and 3 526.13 mPa·s. The SEM results present the wall structures of both types of microcapsules remain stable after dried at 60 ℃ for 10 hours, with no significant rupture observed. These microcapsules demonstrate good compatibility with the coating and are uniformly distributed within it. FTIR results show no new characteristic peaks in the coatings with microcapsules after curing stages. It indicates that there are no chemical reactions that occurred to generate new substances, and the inherent properties of the coating remain unaffected. Aroma release tests were conducted at both 60 ℃ and the room temperature. The results demonstrate that the fragrance-release flooring possesses excellent sustained-release property. At the high-temperature of 60 ℃ with air-blowing, the fragrance retention time of both two fragrance-release flooring reach 96 and 104 hours, while at the room temperature ventilation condition, the retention time exceed 24 weeks. Furthermore, the adhesion, hardness, wear, and stain resistance of the coating film all meet the requirements of the National Standard GB/T 18103—2022 Engineered Wood Flooring.  
      关键词:engineered wood flooring;sandalwood essential oil microcapsules;fragrance-release performance;physical and chemical properties   
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    • SHI Yunfeng, HONG Wujun, DUAN Yanjun, LI Wanzhao, MEI Changtong
      Vol. 39, Issue 3, Pages: 49-57(2025) DOI: 10.12326/j.2096-9694.2025026
      Construction and Application of Three-Dimensional Structural Data Mining Method for OSB Based on Computer Vision
      摘要:Oriented strand board (OSB) is a wood-based structural panel, which is primarily composed of long strands. The physical and mechanical properties are closely related to its internal structure. Since the internal structure of OSB is formed through directional alignment and random layered overlapping of strands, precise characterization of the internal structure is crucial for understanding its structure-property relationships. This study proposes a computer vision-based method for constructing the three-dimensional internal structure of OSB. Strands were prepared by cutting peeled veneer sheets, and 1.2 cm thick OSB panels were fabricated. The mat-forming process was continuously recorded using imaging technology. Computer vision-based techniques were employed to capture strand positions after forming, followed by individual strand contour extraction. Combined with vertical density profile (VDP) data for calculating thickness-direction compression ratios, Python software was utilized to reconstruct the 3D internal structure of OSB. Specimens (5 cm × 5 cm) were prepared to measure weight, VDP, 3D structure, and porosity. Results showed that the total number of strands in fabricated OSB was 2 299, with all strands correctly identified and 2 232 strands (97.1%) completely segmented through computer processing. Determination coefficient (R2) between measured and predicted values reached 0.976 for weight, 0.951 for porosity, and 0.812 for VDP respectively. Comparative analysis with X-ray computed tomography (CT) showed excellent consistency in 3D visualization. Vision-based construction enables quantitative analysis of orientation angles, surface areas, and resin distribution for all strands. This computer vision approach provides exact visualization and quantification of OSB's internal 3D structure, establishing reliable fundamental data for investigating structure-property relationships in OSB.  
      关键词:oriented strand board;computer vision;Vertical density profile;Three-dimensional structure;Accuracy evaluation   
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    • SHAO Chuang, JIANG Mingliang, ZHANG Jingpeng, MA Xingxia
      Vol. 39, Issue 3, Pages: 58-62(2025) DOI: 10.12326/j.2096-9694.2025010
      Durability of Treated Masson Pine with Hexaconazole Formulations in Field Stake Tests
      摘要:In order to evaluate the field durability of treated masson pine with hexaconazole (Hex) and CuH, respectively, according to the National Standard GB/T 27655—2011“Method of evaluating wood preservatives by field tests with stakes”, the wood samples were impregnated with Hex micro emulsions through the vacuum process. The decay and termite resistance indexes of Hex and CuH treated wood were calculated, the natural durability was determined. The results showed that at Beijing field test site, located in medium biological hazard zone (Z2), the decay resistance indexes of all CuH treated Masson pines were 10 after 10 years at the retention level of 1.96~2.92 kg/m3; and the decay resistance indexes of all Hex treated wood were above 9.0 after 4 years at the retention level of 0.052~0.131 kg/m3. At Guangzhou test site, located in severe biological hazard zone (Z4), the decay resistance indexes of all the Masson pine treated with CuH were above 9.85, and the termite resistance indexes were above 6.10 at the retention level of 2.37~2.94 kg/m3 after 10 years. The durability of Masson pine treated with CuH was equivalent to that of treated with cupraamine / ammonia / tebuconazole / propiconazole (CuPT) at the same retention levels in both Z2 and Z4.  
      关键词:Hexaconazole (Hex);copper triazole;field stake test;durability   
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      DISCUSSION &SUGGESTION

    • Research Progress on Customized Furniture Workshop Scheduling System

      LI Rongrong, SHI Ting, ZHOU Xiaomin
      Vol. 39, Issue 3, Pages: 63-71(2025) DOI: 10.12326/j.2096-9694.2025018
      Research Progress on Customized Furniture Workshop Scheduling System
      摘要:The workshop scheduling system plays an important role in improving the flexibility of manufacturing systems and the efficiency of dealing with constraints. It promotes the transformation of enterprises to lean management and agile manufacturing. In this study, the different types of workshop scheduling were classified and summarized from three dimensions including the production process, the manufacturing level, and the execution order. The constraint characteristics and resolving principles of mainstream workshop scheduling models were compared. Secondly, the intelligent scheduling optimization scheme and application characteristics of different production links and processes in the customized furniture workshop were elaborated in detail. At last, the development trend of the scheduling system was prospected. Data-driven technology promotes the transformation of intelligent scheduling in the workshop from offline static optimization to real-time dynamic output, presenting the interactivity and scalability of scheduling system and various advanced digital technologies. Optimal production maximiszs the efficiency of resource allocation through the structure of differentiated constraint features and the optimal allocation of key manufacturing resources, which reflects the excellent application prospect of workshop scheduling system to improve the economic and management benefits of enterprises.  
      关键词:customized furniture;workshop scheduling;production control;intelligent algorithm;intelligent manufacturing   
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    • LI Yan, CHEN Ran, SONG Shasha
      Vol. 39, Issue 3, Pages: 72-81(2025) DOI: 10.12326/j.2096-9694.2024114
      Analysis on Research Hotspot and Trend of Bamboo-Based Materials through Literature Visualization
      摘要:The CiteSpace software was used to visually process, organize, summarize and generalize the research papers in the field of bamboo-based materials included in the core journal databases of China National Knowledge Infrastructure (CNKI) and Web of Science from 2004 to 2024. The development trends and future research directions of bamboo-based materials were also analyzed, and the annual number of published papers, authors and keywords were analyzed. The research finds that the overall number of papers on bamboo-based materials published by CNKI and Web of Science was on the rise. The cooperation among the authors of the published articles was mostly concentrated among specific groups, and a close and extensive network of author collaborations has not yet been formed. The research network in the field of bamboo-based materials among research institutions has been initially formed, but collaboration between institutions still needs to be strengthened. The research hotspots on bamboo-based materials were gradually becoming diversified. They not only focus on the performance optimization and functional expansion of the materials themselves, but also involve multiple dimensions such as the construction of standard systems, industrial applications, and environmental sustainable development. Future research can be driven by the initiative of“Replacing Plastic with Bamboo”, and through interdisciplinary collaborative innovation, promote the functional innovation of bamboo-based materials and the development of“Replacing Plastic with Bamboo”products.  
      关键词:bamboo-based materials;CiteSpace;visual analysis   
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