European Journal of Wood and Wood Products最新文献

{"title":"Multi-objective method integrated with back propagation neural network analysis for surface quality in wood–plastic composite milling","authors":"Feng Zhang,&nbsp;Dietrich Buck,&nbsp;Xiaolei Guo,&nbsp;Tianlan Zhang,&nbsp;Liyun Qian","doi":"10.1007/s00107-025-02225-z","DOIUrl":"10.1007/s00107-025-02225-z","url":null,"abstract":"<div><p>In wood–plastic composites (WPCs) milling, achieving optimal material removal rates and surface roughness levels are critical objectives. In this study, WPCs milling experiments were conducted, and a back propagation (BP) neural network was applied to develop a predictive model for surface roughness. A geometric method was used to derive the calculation formula for the material removal rate. Subsequently, a multi-objective approach was adopted to determine the optimal combination of control factors, including spindle speed <i>n</i>, feed rate <i>U</i>, milling depth <i>h</i>, for WPCs milling. The findings indicate that an increase in spindle speed reduced surface roughness, whereas higher feed speed and milling depth resulted in increased surface roughness. Variance analysis revealed that milling depth had the greatest impact on surface roughness, contributing 34.66%, followed by feed speed at 30.77% contribution and spindle speed at 30.55% contribution. A BP prediction model for surface roughness was established with high accuracy, exhibiting a maximum error of 4.89%. Furthermore, a multi-objective particle swarm optimization algorithm was applied to optimize the objectives of minimizing surface roughness and maximizing material removal rate. Based on the obtained Pareto front, the milling parameter combination of <i>n</i> = 12,000 r/min, <i>U</i> = 3.23 m/min, and <i>h</i> = 0.4 mm is recommended for roughing. For semi-finishing, the optimal parameters are <i>n</i> = 12,000 r/min, <i>U</i> = 4.76 m/min, and <i>h</i> = 0.4 mm. For finishing, the suitable combination is <i>n</i> = 12,000 r/min, <i>U</i> = 6 m/min, and <i>h</i> = 0.72 mm. Experimental verification demonstrated a maximum predictive error of 16.87%, confirming the feasibility of the multi-objective optimization approach.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of fire-retardant treatments and their impact on the fire performance and bonding properties of aspen and silver birch veneers","authors":"Percy Alao,&nbsp;Adekunle Olusoji,&nbsp;Heikko Kallakas,&nbsp;Alar Just,&nbsp;Jaan Kers","doi":"10.1007/s00107-025-02223-1","DOIUrl":"10.1007/s00107-025-02223-1","url":null,"abstract":"<div><p>Plywood is a valuable material that offers superior properties compared to solid wood. However, like solid wood, its poor flammability limits its suitability for various applications. This study investigates the impact of distinct types of fire retardants (FRs), designated as B, P, and U, as well as various application techniques—roller coating, spraying, and impregnation—on the bond strength and fire performance of aspen and birch veneers. A lap shear test (LST) was conducted to compare the bond strength of veneers bonded with a newly developed lignin-substituted phenolic formaldehyde (LPF) resin against a conventional formaldehyde resin (PF) to evaluate the effects of FR treatments. The results indicated that FR retention was significantly higher with impregnation and, overall, with aspen veneers than birch, except for aspen veneers treated using the spraying method with P-FR. The P-FR exhibited strong and consistent performance with birch veneers, irrespective of the treatment method. Notably, P-FR roller-coated aspen, with an FR retention of 9.5% and an ignition time of 11 s, demonstrated the best overall reaction to fire performance. With a basic protection duration of 52 s and a thermal decay time of 157 s, this combination demonstrated improved thermal resistance. The LST further revealed that FR treatments significantly impacted birch veneers, which experienced a 30–48% decrease in shear strength with PF resin relative to untreated veneers. The LPF resin was incompatible with birch veneers when treated with P-FR formulated from a protic ionic liquid. For aspen, the overall decrease in shear strength was 40%, but with B- and U-FR treatments, the reductions reached 38% and 50%, respectively—much higher than the decreases observed in birch (25% and 37%) relative to control samples. These findings provide valuable insights into the effects of fire retardants on new resins, though further research is necessary for comprehensive validation.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02223-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A decade review on hardwood composites and their research developments","authors":"Pierre Blanchet,&nbsp;Matheus Roberto Cabral,&nbsp;João Vítor Felippe Silva,&nbsp;Javier García-Jaca,&nbsp;Daniel Ridley-Ellis,&nbsp;Patrick John McGetrick,&nbsp;Michela Nocetti,&nbsp;Regis Pommier","doi":"10.1007/s00107-025-02216-0","DOIUrl":"10.1007/s00107-025-02216-0","url":null,"abstract":"<div><p>Composite materials, such as engineered wood products (EWPs), are favored for their stability, durability, and uniform mechanical properties, making them a potential way to valorize hardwood species. Therefore, this article aims to present a decade review of hardwood composites and their developments. The methodology of this review was divided into three main parts. First, a search for peer-reviewed articles on EWPs published between 2012 and 2023 was conducted using the Web of Science (WOS) database. Second, the data extracted from the WOS database were analyzed using the Virtual Operating System (VOS) viewer and a bibliometric approach. Third, selected peer-reviewed articles were systematically reviewed and included in this study, and their main findings were presented. The reviewed documents showed that hardwood composites are favored for their stability, durability, and uniform mechanical properties, which make them attractive for various engineering applications. Some key findings from the review include the potential of Yellow Birch to enhance wood-plastic composites by improving flexural strength and reducing flammability. Eucalyptus nanofibers have shown promise in enhancing the mechanical performance of composite mixtures. Hybrid poplar has been identified for its suitability in cross-laminated timber (CLT) products as they meet and exceed the shears and bending strength required by ANSI/APA PRG-320. Moreover, I-joists made from hardwood residues exhibit comparable mechanical performance to commercial counterparts. The review underscores the need for continued research and development to foster wider adoption of these valuable materials.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical and mechanical properties of wood treated with chitosan-caffeine formulations","authors":"Magdalena Woźniak,&nbsp;Jerzy Majka,&nbsp;Patrycja Kwaśniewska-Sip,&nbsp;Tomasz Krystofiak,&nbsp;Barbara Lis,&nbsp;Edward Roszyk,&nbsp;Grzegorz Cofta,&nbsp;Izabela Ratajczak","doi":"10.1007/s00107-025-02226-y","DOIUrl":"10.1007/s00107-025-02226-y","url":null,"abstract":"<div><p>There is growing interest in developing natural wood preservatives, particularly in response to the escalating challenges posed by environmental degradation. Caffeine is a bio-based preservative that improves decay resistance of treated wood, however it is also sensitive to leaching from wood when exposed to water. Combining chitosan-caffeine formulations limits the leaching of caffeine from impregnated wood, thereby increasing its resistance even under outdoor conditions. This research aimed to evaluate the properties of wood impregnated with chitosan-caffeine formulations, focusing on wettability (contact angle measurement), mechanical properties (bending strength), and sorption behavior. The contact angle measurement revealed that wood treated with chitosan and chitosan-caffeine formulations exhibited an improvement in water resistance compared to untreated wood and wood treated with caffeine alone. However, this resistance showed only for short-term application. Both caffeine and chitosan treatments reduced the equilibrium moisture content during adsorption and desorption phases in the relative air humidity range from 0 to 0.95. The application of chitosan-caffeine formulations for wood impregnation resulted in a reduction in equilibrium moisture content, as well as hygroscopicity of the treated wood. Treatment with all formulation variants had no effect on the mechanical parameters, including modulus of elasticity and modulus of rupture. In addition, FTIR results indicated that both caffeine and chitosan interact with wood components. These findings suggest that chitosan-caffeine formulations are promising as natural wood preservatives, offering an improved hygroscopicity while maintaining the mechanical properties of the treated wood.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Focus on hydrochars produced from hydrothermal liquefaction of beech wood, soda lignin and black liquor","authors":"Maximilian Wörner,&nbsp;Ursel Hornung,&nbsp;Selhan Karagöz,&nbsp;Thomas Zevaco,&nbsp;Nicolaus Dahmen","doi":"10.1007/s00107-025-02214-2","DOIUrl":"10.1007/s00107-025-02214-2","url":null,"abstract":"<div><p>Previous studies on the hydrothermal liquefaction (HTL) of biomass have primarily focused on bio-oil production, overlooking the significant hydrochar by-product. In this work, the HTL of beech wood, soda lignin, and black liquor was performed at temperatures of 300 °C and 350 °C for 20 min. The effect of temperature and biomass type on hydrochar yields and properties was thoroughly investigated. The mass yields of the hydrochars varied between 25.92 wt% and 32.70 wt%. An increase in temperature from 300 °C to 350 °C led to a decrease in hydrochar mass yields. The carbon yield was found to be highest (51 wt%) at 300 °C using beech wood. The highest heating value, 30.97 MJ/kg, was obtained with hydrochar derived from soda lignin at 300 °C. Solid-state carbon NMR demonstrated that the hydrochars derived from black liquor contain condensed aromatic structures. Both the type of biomass and temperature significantly influenced the characteristics of the resulting hydrochar. This research demonstrates that hydrochar holds promise as a solid biofuel due to its advantageous energy content and carbon yield, highlighting its potential for sustainable energy applications.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02214-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-term hygrothermal performance assessment of on-site wood-framed walls based on sensor monitoring and machine learning","authors":"Xinmiao Meng,&nbsp;Yanyu Zhao,&nbsp;Shiyi Mei,&nbsp;Yu Li,&nbsp;Ying Gao","doi":"10.1007/s00107-025-02217-z","DOIUrl":"10.1007/s00107-025-02217-z","url":null,"abstract":"<div><p>Moisture damage poses a significant threat to building envelopes, leading to mould growth and reduced thermal insulation, thereby affecting indoor air quality and human health. Wood, as a promising eco-friendly building material, is highly sensitive to moisture, making hygrothermal monitoring of wooden walls essential. However, sensors used for monitoring are prone to failures, and the high maintenance and replacement costs make long-term monitoring challenging. Therefore, this study combines short-term monitoring data from sensors within the wall with outdoor climate data to predict long-term hygrothermal responses using machine learning (ML) models after monitoring ended. The ML model, which consists of a one-dimensional convolutional neural network (1D-CNN) and a long short-term memory (LSTM) network, was trained using two years of monitoring data and outdoor climate data from a four-story timber-framed office building. Subsequently, the SHapley Additive exPlanation (SHAP) method was employed to interpret the impact of each feature on the model’s predictions. Finally, the ML model was used to predict the hygrothermal responses inside the wall for three years after monitoring ended, and the mould growth risk for walls in different orientations was assessed using the predicted data. The study found that during the monitoring period, 97.9% of the test points showed no mould growth risk, and 2.1% showed low risk, indicating the wall assembly strong adaptability to Tianjin’s climate. The ML model performed excellently in predicting the temperature inside the wall, with an average R² of 0.952, and showed moderate accuracy in predicting relative humidity, with an average R² of 0.805. Predictions for three years after monitoring ends indicated that the maximum mould index for north-oriented walls reached 1.06 during heavy rainfall periods, posing a potential low risk. The method proposed in this study allows for long-term assessment by updating outdoor climate data, effectively utilizing data from sensors during short-term monitoring periods and serving as a cost-effective alternative after monitoring ends.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02217-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of milling performance of thermally modified wood based on machine learning","authors":"Wenlan Huang,&nbsp;Haiyang Chen,&nbsp;Qingyang Jin,&nbsp;Jiawen Shi,&nbsp;Xiaolei Guo,&nbsp;Bin Na","doi":"10.1007/s00107-025-02224-0","DOIUrl":"10.1007/s00107-025-02224-0","url":null,"abstract":"<div><p>The milling performance of thermally modified wood is an essential step in its actual processing and production. Accurate prediction of milling performance of thermally modified wood is significantly meaningful for subsequent parameter optimization to improve product surface quality and increase product competitiveness. Hence, based on machine learning, four models, Random Forest (RF), Support Vector Machine (SVM), Gaussian Process Regression (GPR) and Multilayer Perceptron (MLP), were established to predict two milling parameters of thermally modified wood. In addition, four characteristics factors were set up to evaluate the cutting force (F) and the surface roughness (Ra): the modification temperature (T) of thermally modified wood, the depth of cut (h), the feed rate (u), and the spindle speed (n) of the tool during the milling process. In order to reflect the scientific nature of the research process, normal distribution analysis was additionally used as a dataset preprocessing step. The final comparison found the GPR model to be the best fitting and most accurate method for predicting milling performance.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of borate chemical treatment on adhesive bond performance of Douglas fir and grand fir laminates","authors":"A. T. Adeniran,&nbsp;K. Englund,&nbsp;H. Li,&nbsp;J-W Kim","doi":"10.1007/s00107-025-02218-y","DOIUrl":"10.1007/s00107-025-02218-y","url":null,"abstract":"<div><p>This study investigates borate treatments of Douglas fir (<i>Pseudotsuga menziesii</i>) and grand fir (<i>Abies grandis</i>) lamstock and their impact on adhesive bonding performance. Lamstock were treated using three different methods (dip, double vacuum, and vacuum/pressure) with the aim to achieve a target retention of 0.1% (w/w) B₂O₃. The degree to which B₂O₃ was sorbed by the lamstocks was evaluated using image analysis technique. Treated lamstocks were bonded with one component polyurethane adhesive, and bond performance was evaluated by a cyclic delamination and block shear test. Results revealed that the uptake of treating solution differs by treatment methods and species. Uptake by vacuum/pressure-treated lamstocks is highest while uptake in dip treated lamstocks is the lowest. Grand fir had higher uptake values than Douglas fir throughout all treatments. The level of retention of B₂O₃ was influenced by treating solution concentration and wood properties. Dip treated lamstock showed limited spread of retained B₂O₃ with bulk of the B₂O₃ retained close to the surface. All conditions of grand fir, planed or unplaned, were able to meet the requirement of ANSI A190.1-2022 for block shear wood failure and total delamination, while unplaned specimens of Douglas-fir did not meet the requirement of ANSI A190.1-2022. Borate treatments increased the hydrophilicity of the lamstocks, causing the potential formation of superficial bonds between the adhesive and the accumulated chemicals on the surface of the unplaned dip treated lamina. This study presents insightful information about maximizing the chemical treatment of B₂O₃ to have the least possible impact on adhesive bond performance.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of wood dust emission according to some wood species in 3D machining applied with CNC machine","authors":"Evren Osman Çakıroğlu,&nbsp;Kazım Onur Demirarslan,&nbsp;Taner Taşdemir","doi":"10.1007/s00107-025-02222-2","DOIUrl":"10.1007/s00107-025-02222-2","url":null,"abstract":"<div><p>The use of CNC machines for woodworking is becoming increasingly widespread due to advancing technology. In this study, while 3D processing is performed on wood materials using a CNC machine, the aim is to determine wood dust emissions (PM2.5, PM10) according to processing parameters and wood species. Yellow pine, spruce, chestnut, sapelli, and beech are wood species frequently preferred in furniture businesses. Utilizing a CNC machine equipped with 2 mm and 10 mm diameter cutting tools, the wooden material was machined at a spindle speed of 18,000 RPM, a plunge rate of 4000 mm/min, and a cutting speed of 8000 mm/min. For the study, a 3D-modeled motif with curved lines was selected and applied to wooden prisms measuring 30 cm × 30 cm × 30 mm (width, length, thickness).</p><p>In conclusion, Yellow pine, with its high hardness and dense structure, generates significantly more dust than spruce during CNC machining. This result reveals that different wood species exhibit different levels of environmental impact during CNC processing. This underscores the urgent need for appropriate air filtration and emission control systems, particularly for woods that produce high emissions. Fine cutting edges effectively reduce PM2.5 and PM10 concentrations, enhancing workplace air quality. By reducing exposure to wood dust, which is harmful to human health, this study plays a crucial role in addressing this pressing issue and allows for the implementation of suitable arrangements with minimal chip removal for CNC parameters.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02222-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coffee silverskin and cocoa pod husk modified with methacrylic acid as fillers for the urea-formaldehyde resin in plywood production","authors":"Jakub Kawalerczyk,&nbsp;Maciej Hoffmann,&nbsp;Maria Ekwińska,&nbsp;Kinga Stuper-Szablewska,&nbsp;Magdalena Woźniak,&nbsp;Radosław Mirski","doi":"10.1007/s00107-025-02220-4","DOIUrl":"10.1007/s00107-025-02220-4","url":null,"abstract":"<div><p>The aim of the study was to investigate the effect of using various amounts of coffee silverskin and cocoa pod husk (5%, 10%, 15%), both unmodified and modified with methacrylic acid, as the urea-formaldehyde adhesive fillers on the properties of plywood. The attenuated total reflectance Fourier transform infrared spectroscopy showed that the performed modification was effective. Based on the contact angle measurement and the analysis of phenolic compounds content using ultra performance liquid chromatography, it was found that the modified fillers were less hydrophilic and demonstrated lower content of phenolic acids and flavonoids. The viscosity and reactivity of the adhesive mixtures were influenced solely by the filler loading, rather than by the type or modification of the filler. The use of the tested fillers enabled the achievement of the wet shear strength level required by the standard. Furthermore, it was demonstrated that modifying the fillers with methacrylic acid positively influenced the strength of the bond lines. The negative effect on density, bending strength and modulus of elasticity was observed only for variants with the lowest filler content. Furthermore, the results of formaldehyde content in the cured adhesive and formaldehyde emission of plywood demonstrated the formaldehyde-scavenging ability of cocoa pod husk.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}