European Journal of Wood and Wood Products最新文献

{"title":"Evaluation of the strength of edge-glued panels (EGP) manufactured with tropical woods from Brazil","authors":"Roberto Daniel de Araújo,&nbsp;Cristiano Souza do Nascimento,&nbsp;Claudete Catanhede do Nascimento,&nbsp;Joaquim dos Santos,&nbsp;Estevão Vicente Cavalcante Monteiro de Paula","doi":"10.1007/s00107-025-02264-6","DOIUrl":"10.1007/s00107-025-02264-6","url":null,"abstract":"<div><p>The study investigated the mechanical performance of edge-glued panels (EGP) fabricated from Amazonian tropical wood species, emphasizing their potential application in value-added wood products. Five native species from sustainably managed areas were selected to evaluate their suitability for industrial use. The panels were manufactured using two types of adhesives, polyvinyl acetate (PVA) and emulsion polymer isocyanate (EPI), and subjected to testing for static flexural, tensile, and shear strength under dry and humid conditions. The results revealed significant variation in panel performance depending on the wood species and adhesive employed. The EPI adhesive demonstrated superior bonding efficiency, particularly in high-humidity environments, underscoring its potential for application in challenging conditions. Panels constructed with <i>Micrandropsis scleroxylon</i> (Piãozinho) presented the highest rupture and tensile strength under dry conditions, indicating a strong mechanical performance. Meanwhile, <i>Hymenolobium pulcherrimum</i> (Angelim-vermelho) demonstrated consistently strong performance across both adhesives, reinforcing its versatility for diverse manufacturing needs. This research underscores the untapped potential of lesser-known Amazonian wood species, traditionally underutilized in industrial processes, to produce high-quality engineered wood products. The findings highlight the feasibility of incorporating these species into the manufacture of EGP panels, offering a sustainable pathway to enhance the economic value of tropical timber resources while supporting ecological conservation initiatives. Furthermore, integrating these materials into the wood industry aligns with global efforts to promote sustainable forest management and biodiversity preservation, reinforcing the critical role of forest science in balancing development and environmental stewardship.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908752","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":"Optimization of semi-wet hot-pressing conditions for Salix psammophila-based mycelium-bound boards via response surface methodology","authors":"Xiaowen Song,&nbsp;Shuoye Chen,&nbsp;Ziyi Cai,&nbsp;Jianxin Wu,&nbsp;Yanfeng Zhang,&nbsp;Risu Na,&nbsp;He Lv,&nbsp;Cong He,&nbsp;Tingting Wu,&nbsp;Xiulun Wang","doi":"10.1007/s00107-025-02259-3","DOIUrl":"10.1007/s00107-025-02259-3","url":null,"abstract":"<div><p>Conventional indoor wood-based materials often rely on formaldehyde-based adhesives, which pose environmental and health risks. In this study, eco-friendly mycelium-bound boards were fabricated through semi-wet hot-pressing technology using <i>Salix psammophila</i> as the substrate and fungal mycelium as a bio-based adhesive. The interfacial adhesion, chemical interactions, and thermal stability of the composites were systematically investigated by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). A Box-Behnken response surface design was employed to optimize the effects of the hot-pressing parameters on the physical-mechanical properties. The optimal hot-pressing parameters (within the tested range) were determined to maximize the rupture’s modulus and minimize water absorption and thickness swelling rates, yielding an applied pressure of 10 MPa, a temperature of 194 ℃, and a time of 31 min. Under these conditions, the mycelium-bound boards exhibited a modulus of rupture (MOR) of 37.64 MPa, a water absorption (WA) of 48.1%, and a thickness swelling (TS) of 23.01%. The hot-pressing process significantly enhanced the overall board performance, with pressure and temperature exhibiting the most pronounced effects. Furthermore, thermogravimetric analysis revealed high thermal stability in the boards. This study provides valuable insights into effectively utilizing agricultural, forestry, and pastoral residues for improving mycelium-bound boards performance. In conclusion, mycelium-bound boards exhibit the potential to be used as materials for construction, furniture, and household items due to their environmentally friendly nature.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888700","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":"Screening of endophytic fungi biocontrols against sapstain fungus (Lasiodiplodia theobromae) in rubberwood","authors":"Susu Yang,&nbsp;Chunwang Yang,&nbsp;Chaoran Wang,&nbsp;Yushan Yang,&nbsp;Jian Qiu,&nbsp;Lei Qin","doi":"10.1007/s00107-025-02257-5","DOIUrl":"10.1007/s00107-025-02257-5","url":null,"abstract":"<div><p>Rubber trees are often contaminated by sapstain fungus after felling, which seriously affects the appearance of the surface and causes economic losses. In order to combat the discoloration problem that occurs in rubberwood, this study isolated and screened a variety of endophytic fungi from rubberwood against sapstain fungus <i>Lasiodiplodia theobromae</i>, which is widely present in rubberwood. The antagonism experiment initially screened two strains that showed significant inhibitory effects against <i>Lasiodiplodia theobromae</i> on plates. After preparing fungal suspensions of these two strains and applying them to rubber wood, the BH-3 strain was identified as the most effective biocontrol agent based on the rate of mass loss and color difference analysis. This strain was subsequently identified as <i>Trichoderma reesei</i>. FTIR, XRD, TG and SEM analysis were carried out on wood chips before and after treatment and wood chips before and after infection. The results showed that treated wood chips could well resist sapstain fungus infestation and had no significant effect on the thermal stability, MOR and MOE of wood chips. No discoloration was observed in treated wood chips after 4 weeks of coexistence with the sapstain fungus in the presence of <i>Trichoderma reesei</i> suspension. The wood chips did not exhibit any color change, the main chemical components (cellulose, hemicellulose, and lignin) were only slightly degraded, and the microstructure remained intact. Therefore, this study shows that <i>Trichoderma reesei</i> can be widely used as an environmentally friendly, economical and efficient biocontrol agent against sapstain fungus.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877747","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":"Surface roughness of thermally modified and unmodified selected wood species after sanding","authors":"Lukáš Adamčík,&nbsp;Valentina Lo Giudice,&nbsp;Luigi Todaro,&nbsp;Michal Dudiak,&nbsp;Richard Kminiak","doi":"10.1007/s00107-025-02260-w","DOIUrl":"10.1007/s00107-025-02260-w","url":null,"abstract":"<div><p>The paper aims to determine by measuring whether the Thermo-Vacuum modification of selected types of wood causes an increase or decrease in surface roughness after its sanding using drum sander. The roughness change is explained more comprehensively with respect to the change in density and hardness. The surface roughness was measured with a Keyence VHX-7000 digital microscope. The measured data showed that the Thermo-Vacuum modification reduced the surface roughness of beech wood. On the other hand, pine, oak, and chestnut wood increased in roughness probably due to a decrease in their hardness. This caused deeper grooves to be cut in the sanding process. The paper thus answers the question of whether wood modification helps the woodworking processes to achieve lower surface roughness or, on the contrary, increases it, which will require further surface treatments.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02260-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877748","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":"Digital image correlation (DIC) application to evaluate bending performance of timber beams strengthened with NSM-CFRP plate","authors":"Annisa Prita Melinda,&nbsp;Shogo Higuchi,&nbsp;Fengky Satria Yoresta,&nbsp;Yosuke Yamazaki,&nbsp;Phan Viet Nhut,&nbsp;Pingkan Nuryanti,&nbsp;Yuji Takiuchi,&nbsp;Yukihiro Matsumoto","doi":"10.1007/s00107-025-02258-4","DOIUrl":"10.1007/s00107-025-02258-4","url":null,"abstract":"<div><p>This study presents the use of open-source digital image correlation (DIC), an advanced non-contact optical technique for measuring strain and deformation, to evaluate the bending performance of strengthened laminated veneer lumber (LVL) timber beams under a four-point bending test. The beams were strengthened with a carbon fibre-reinforced polymer (CFRP) plate mounted near the compression side, known as near-surface mounted (NSM). The effect of the reinforcement ratio on the compression zone was experimentally investigated for the strengthened beams. Open-source Ncorr software was employed to track surface patterns and measure full-field displacement and strain. This study demonstrated that DIC techniques provided accurate strain measurements and displacement analysis that closely matched experimental values, confirming the reliability of this open-source DIC system. DIC also revealed strain fields developing before and after the onset of cracking, providing insight into the contour failure of the timber beam. The strain fields obtained from DIC were found to be in excellent agreement with the crack pattern from the experimental results. Additionally, DIC results for displacement analysis and elastic stiffness were in good accord with experimental observations and beam theory for displacement calculation, further confirming the reliability and effectiveness of DIC as an analytical technique. The results of this study also have practical implications by highlighting the potential of open-source DIC techniques in the same way as commercial DIC software for ensuring accuracy and efficiency in materials testing and analysis for structural applications, particularly in timber composite materials.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02258-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877749","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":"Comparison of the properties of birch bark tar obtained by the double-clay pot method and the laboratory method","authors":"Monika Bartkowiak,&nbsp;Szymon Rosołowski,&nbsp;Jakub Brózdowski,&nbsp;Grzegorz Cofta,&nbsp;Grażyna Dąbrowska,&nbsp;Magdalena Zborowska","doi":"10.1007/s00107-025-02255-7","DOIUrl":"10.1007/s00107-025-02255-7","url":null,"abstract":"<div><p>The aim of the experiment was to produce tar from birch bark using the double-clay pot (traditional) and laboratory methods and to compare them in order to obtain information about the properties of pyrolysis products. The comparison was made based on the analysis of the effectiveness of the methods used, assessment of selected physical properties and chemical composition of pyrolysis products using TGA, FTIR and Py-GC/MS techniques, and identification of the antioxidant properties of pyrolysis products. Birch bark tar was obtained in both methods used. It was found that the production method and the selection of pyrolysis parameters affect the properties of birch bark tar such as density, viscosity, content of solid fraction, solubility, thermal properties, structure and chemical composition, as well as antioxidant properties.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875472","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":"Alternative sustainable Mexican tropical woods for classical guitar frameboards and fretboards","authors":"Alejandra Quintanar-Isaías,&nbsp;Felipe Orduña-Bustamante,&nbsp;Ana Teresa Jaramillo-Pérez,&nbsp;Cándido Cruz-Santiago,&nbsp;Norma Castañeda-Villa,&nbsp;Dulce Selene Nolasco-Ramírez","doi":"10.1007/s00107-025-02250-y","DOIUrl":"10.1007/s00107-025-02250-y","url":null,"abstract":"<div><p>Sustainable wood species suitable for constructing frameboards and fretboards of classical guitars and other string musical instruments, are identified and proposed as alternatives to wood species traditionally used for these purposes, but being currently ecologically endangered. Two sets of wood species were considered: (1) experimental woods, as possible alternatives, and (2) reference woods, traditionally in use, but considered at risk. Wood samples were studied in terms of anatomical characteristics: sizes of vessels, fibers, rays, and the corresponding ratios, amount of extractives, type and amount of axial parenchyma; and also in terms of physical vibration characteristics. Experimental woods of low mass density also have vibration qualities below those found among the reference wood species. The anatomical characteristics observed in these low density wood species feature large vessel diameters, thin fiber walls, and low amounts of extractives and parenchyma. Experimental woods of higher densities show larger, more adequate vibration parameters, and a variety of cellular characteristics, with modest amounts of extractives. Reference woods show larger transmission, more desirable vibration properties, diverse vessel diameters, with significantly thick fiber cell walls, and abundant axial parenchyma and extractives. Results were analyzed in terms of different variables, showing clustering of wood species according to anatomical and physical vibration similarities. This study allows recognizing characteristics closely equivalent to the reference woods among some of the experimental wood species, making them suitable for classical guitar frameboards and fretboards, as well as identifying some experimental wood species not necessarily suitable for this purpose.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02250-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861346","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":"Evaluation of bending performance in full-scale cross-laminated timber made from trembling aspen lumber","authors":"Dawei Wang,&nbsp;Mengyuan Zhang,&nbsp;Meng Gong,&nbsp;Ying Hei Chui","doi":"10.1007/s00107-025-02251-x","DOIUrl":"10.1007/s00107-025-02251-x","url":null,"abstract":"<div><p>Cross-laminated timber (CLT) is an innovative engineered wood product with excellent stiffness and strength in two directions, typically made from combination species of Spruce-Pine-Fir or Douglas Fir-Larch in North America. Trembling aspen (<i>Populus tremuloides</i>), a widely distributed species in North America, exhibits a great potential for producing CLT due to its outstanding rolling shear properties and relatively low raw material cost. This study was aimed at evaluating the bending properties of full-scale CLT panel and specimen manufactured from trembling aspen lumber sourced in Alberta, Canada. The longitudinal stress wave (LSW) method was employed for sorting lumber based on the modulus of elasticity (MOE). Three- and five-layer CLT panels in two strength directions were constructed, measuring 2.7 m in length and 1.2 m in width. Static third-point bending tests were conducted for CLT panels and specimens. It was found that (1) The mean effective bending stiffnesses ((EI)_eff,f,0 and (EI)_eff,f,90) of three-layer CLT panels in the major- and minor-strength directions were 32.1% and 44.8% higher, respectively, than the values calculated using the shear analogy method. Similarly, for five-layer CLT panels, (EI)_eff,f,0 increased by 46.6% and (EI)_eff,f,90 by 43.3%; (2) For five-layer CLT specimens, the mean (EI)_eff,f,0 and (EI)_eff,f,90 were 19.2% and 30.3% higher, respectively, than grade E1 requirements specified in the standard ANSI/APA PRG-320, and the mean (EI)_eff,f,0 and (EI)_eff,f,90 of three-layer CLT specimens increased by 1.5% and 40.7% compared to those of grade E1, respectively; (3) The mean bending moment resistance ((F_bS)_eff,f,0) for five-layer CLT specimens in the major-strength direction was approximately 5.0% lower than that of CLT made with western hemlock, and the mean (F_bS)_eff,f,0 of three-layer CLT specimens was about 25.3% lower than that of CLT made with black spruce; (4) The rolling shear failure was observed to be the predominant failure mode in the major-strength groups, occurring approximately 50% in both three- and five-layer CLT specimens. For the minor-strength group, the tension failure was observed as primary failure mode, accounting for 50% as well. (5) The mean absolute percentage errors forecast for the mean (EI)_eff of three-layer CLT panels and specimens in the major-strength was 8.47% and 10.10%, respectively.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856624","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":"Enhancing mechanical properties of 3D-printed PLA/wood composites: a metaheuristic and statistical perspective","authors":"Nikhil Bharat,&nbsp;Vijay Kumar,&nbsp;D. Veeman,&nbsp;M. Vellaisamy","doi":"10.1007/s00107-025-02253-9","DOIUrl":"10.1007/s00107-025-02253-9","url":null,"abstract":"<div><p>The optimization of Fused Filament Fabrication (FFF) process parameters is crucial for improving the mechanical properties of PLA/wood composites, yet traditional statistical methods often fail to capture complex, nonlinear parameter interactions effectively. This study applies the Artificial Bee Colony (ABC) algorithm to optimize layer height, infill density, infill pattern, and raster orientation, comparing its performance with Analysis of Variance (ANOVA). PLA/wood composites were fabricated using an 80:20 ratio, and mechanical testing was conducted to evaluate compressive strength, hardness, and tensile strength. The ABC algorithm demonstrated higher prediction accuracy, with R² values of 0.96 for compressive strength, 0.93 for hardness, and 0.95 for tensile strength, significantly reducing prediction errors compared to ANOVA. Experimental validation confirmed an experimental compressive strength of 82.4 MPa, theoretical value of 83.78 MPa (error 1.69%), hardness of 83.54 Shore D, theoretical value of 83.60 Shore D (error 0.11%), and tensile strength of 59.7 MPa, theoretical value of 59.95 MPa (error 0.41%). The results demonstrate that ABC-based optimization significantly enhances process efficiency and mechanical performance, making it a promising tool for advanced additive manufacturing applications, including multi-material 3D printing and sustainable bio-composite fabrication.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848937","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":"Identification of wood structure related vibrational characteristics of wooden plates from Norway spruce (Picea abies [L.] Karst.) by high resolution laser scans","authors":"Oliver Dünisch","doi":"10.1007/s00107-025-02254-8","DOIUrl":"10.1007/s00107-025-02254-8","url":null,"abstract":"<div><p>The vibrational behaviour of wooden plates of Norway spruce (<i>Picea abies</i> [L.] Karst.) was studied by means of a high resolution laser scanning system, which allowed vibration measurements with an accuracy of 0.6 μm, a spatial resolution of the measuring spots of 28.6 μm, and a sampling frequency of 10,000 Hz. In total the vibration spectra of 10,760 measurement spots were analysed in terms of the number, frequencies, amplitudes, and damping of the overlapping natural oscillations. Special regard was given to the influence of the anatomical direction and the wood structure on the vibrational behaviour of the plates. In more than 70% of the vibration spectra two natural frequencies were present, while the other spectra showed indistinct vibration patterns. The anatomical direction of the wood had a significant influence on the vibrational behaviour in terms of the frequencies in absolute numbers as well as the amplitudes and the damping of the natural oscillations. Vibration spectra obtained from measurements in earlywood and latewood zones of the tree rings showed very similar characteristics, while measurements in zones with strong changes in tree ring widths and the presence of resin canals were often correlated with an increase of overlapping natural oscillations of indistinct frequencies, amplitudes, damping, and phase offset. The results indicate that the homogenous and highly organized cell structure in the wood of Norway spruce leads to distinct vibrational characteristics with two distinct overlapping natural frequencies. With regard to the use as resonance wood changes in tree ring widths and accumulations of resin canals are local defects, which have a negative impact on the vibrational properties of the wood.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849018","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}