Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes /issues, but are citable by Digital Object Identifier (DOI).
Display Method:
Display Method:
Study on the Stability of Chair Furniture Based on Finite Element Analysis
HUANG Peng-fei, LI Fang-fei, ZHANG Lei, LI Min
2023, 42(3): 1-8.   doi: 10.12390/jbr2023011
Abstract(89) PDF(44)
【Objective】 The main purpose of this paper is to arouse readers’ attention to the stability of chair furniture,then improve the stability of chairs from the design stage. 【Method】 Taking the bow chair as an example,the author used modeling method,finite element analysis and test verification method to evaluate the stability. 【Result】 The evaluation results showed that the stability of the bow chair was unqualified. Combined with the theoretical analysis,the optimization design scheme was proposed. The finite element analysis results showed that the stability of the optimization scheme was significantly improved. The optimized design scheme was made into samples and tested, and the test results once again confirmed a significant improvement in stability.【Conclusion】 Based on two finite element analysis and experimental verification,it is concluded that using finite element analysis to improve the stability of chair is feasible.
Analysis of Mechanical Properties and Chemical Composition of Bamboo Flakes after Softening Treatment
CHENG Liang, TANG Rong-qiang, ZHANG Wei-gang, ZHANG Rui-hua, XU Yun-bing
2023, 42(3): 9-14.   doi: 10.12390/jbr2022121
Abstract(142) PDF(58)
【Objective】In order to study the effects of different proportions of modifiers, glacial acetic acid concentration, treatment time and temperature on the bending strength, tensile strength and hardness of bamboo, to measure the changes of bending strength, tensile strength and hardness before and after modification, soa s to obtain the appropriate pencil plate treatment technology. 【Method】Bamboo was used as raw material and impregnated with glacial acetic acid and hydrogen peroxide. The chemical composition and modification effect of modified bamboo were characterized by XRD, FTIR and TG. 【Result】The bending strength and tensile strength of modified bamboo decreased with the increase of temperature, glacial acetic acid and hydrogen peroxide content, respectively. Compared with the control group, the bending strength and tensile strength of modified bamboo decreased by 44.5%, 59.9% and 44.81% respectively. The peak pyrolysis temperature of TG and DTG lagged behind, and the residue rate decreased, indicating that the content of glacial acetic acid increased, and some cellulose and hemicellulose were decomposed. XRD analysis showed that the crystallinity of modified bamboo decreased by about 1.5%, and the crystallinity decreases with the increase of treatment temperature. The enhancement of methyl and carboxyl absorption peaked at 1 250-1 377 cm-1 and hydroxyl absorption peaked at 3 415 cm-1 indicated the increase of hydrophilic groups in bamboo. 【Conclusion】 The optimal modifier concentration ratio was 1∶1, treatment temperature was 60 ℃, and treatment time was 24 hours.
Mosquito Repellent Activity and Component Analysis of Bamboo Vinegar and Its Animal Safety
DING Li-chao, CHEN Ming, TIAN Su-kui, YING Kun-zhen, CAI Sen-kang, WANG Xiao-jun, CHEN Fei
2023, 42(3): 15-21.   doi: 10.12390/jbr2023023
Abstract(36) PDF(31)
【Objective】 Mosquitoes transmit terrible diseases that kill many people every year,increasing health care costs and reducing productivity. The by-product of bamboo charcoal production, Bamboo Vinegar (BV) has a large amount of surplus due to its limited use. Therefore,seeking new uses of BV to expand consumption has become an urgent scientific and technological demand in bamboo utilization industry chain. 【Method】 Several simple,practical and multidisciplinary methods were used to determine the repellent effectiveness of BV,including the Forearm skin Landing Test (FLT),the lower Limb skin Landing Test (LLT) and Sucrose breeding bioassay (SBB). 【Result】 FLT results showed that 9.0% Acetic Acid Water Solvent (AAWS) and BV had strong protective effects against Aedes albopictus (94.9%),while commercial liquid insecticide and 4.5% DEET had strong protective effects against A.albopictus (97.8%) and 90.8%,respectively. The results of LLT showed that BVS and AAWS had better protection against A. albopictus (97.6% and 85.2% to 97.5%,respectively,against 4.5%-9.0% AAWS) when using liquid electrothermal vapors. Commercial pesticide protection levels are 99.5%. SBB showed that mosquitoes were repelled by the smell of AAWS. No significant difference in the number of falling mosquitoes after BV (6.6% AA),4.5% AAWS,9.0% AAWS and 4.5% DEET treatment,but difference in the number of mosquitoes after BV (6.6% AA),4.5% AAWS,9.0% AAWS,DEET. The protection period in descending order was:DEET (75-90 min)=BV (75-90 min)>Formic acid (60-75 min)>AA (45-60 min)>Propionic acid (30-45 min)>Butyric acid (15-30 min)>Water (0 min). In addition,69 volatile substances were found by gas-mass spectrometry,including acids 9.00%,phenols 3.37%,ketones 2.21%,esters 1.97%,carbohydrates 0.81%,amines 0.76%,alcohols 0.37%,other organic compounds 0.81% and water 80.70%. The safety test showed that the micronucleus rate of mice bone marrow of BVwas negative. 【Conclusion】 BV may partially replace insecticides,DEET and essential oils as effective preparations for personal mosquito control.
Making Technique of High Quality Seasoned Shoot of Phyllostachys prominens
TANG Hua-qing, ZHANG Zhong-jun, HUA Ke-da, SUN Jiao-jiao
2023, 42(3): 22-26.   doi: 10.12390/jbr2022082
Abstract(41) PDF(39)
【Objective】 Shoots of Phyllostachys prominens have excellent bamboo shoot characteristics,and the development of seasoned bamboo shoot products has improved their quality and value. In-depth exploration of economic,ecological,and cultural values,as well as promoting the typical significance of Ph. prominens shoots has typical significance.【Method】 This article describes the quality of characteristics shoots of Ph. prominens,introduces the production process and techniques,and discusses the application prospects of the bamboo shoot market. 【Result】 Using high-quality shoots of Ph. prominens as raw materials,nearly 30 processes such as raw material acceptance,grading,salting,cutting,grading,desalination and rinsing are used to produce a series of seasoned bamboo shoots suitable for different tastes and preferences at home and abroad,realize ready-to-eat readiness foreating when bag is torn and high-value processing,develop a mass bamboo shoot consumption market,meet the taste needs of different consumer groups for shoots of Ph. prominens,and enhance the value of bamboo shoots. 【Conclusion】 The development of seasoned bamboo shoots expands and extends the potential value of Ph. prominens. By carrying forward tradition,promoting innovation,and combining with the development of rural tourism and leisure activities,the bamboo shoot economy in rural areas can be further developed.
Study on the Growth Characteristics,Physiological and Biochemical Characteristics of Precious Species Interplanted under Phyllostachys edulis Forest
WANG An-ke, CHAI Qing-hui, ZHU Yu-lan, WU Xue-ling, TANG Hui, WU Jia, ZHAO Yi-ming, ZHU Wei-rong, BI Yu-fang, FANG Hong-feng, HUANG Yun-feng
2023, 42(3): 27-32.   doi: 10.12390/jbr2023035
Abstract(36) PDF(45)
【Objective】 To study the growth characteristics,physiological and biochemical characteristics of the precious tree species under the Phyllostachys edulis forests,and provide theoretical reference for the interplantation of the precious tree species and construction of the mixed forest under the Ph. edulis forests. 【Method】 The Ph. edulis forests with continuous concentration and consistent site conditions were selected. 1 800 bamboo plants·hm-2 were retained,the same specifications of three precious tree species such as Ormosia hosiei,Phoebe chekiangensis and Cinnamomum japonicum were selected for interplantation,with a planting density of 300 trees·hm-2. After planting for about 2 years,the growth data,leaf photosynthesis parameters,chlorophyll content,soluble sugar content,soluble protein content,malondialdehyde content and antioxidant system activity under different treatments were analyzed. 【Result】 Among the three tree species,the growth (ground diameter and seedling height) from high to low were C. japonicum,O. hosiei and P. chekiangensis. The Pn,Gs,Ci and Tr of O. hosiei were higher than those of the other two species. The contents of chlorophyll a,b,a+b in leaves and the concentration of carotenoid quality from high to low were O. hosiei,P. chekiangensis and C. japonicum. The activities of POD and CAT in O. hosiei were significantly higher than those in P. chekiangensis and C. japonicum,but no significant difference in SOD activity was observed. MDA of P. chekiangensis was significantly higher than that of O. hosiei and C. japonicum,and the contents of soluble protein and soluble sugar in C. japonicum were the highest. 【Conclusion】 O. hosiei has good ecological adaptability to the environment of the Ph. edulis forests and is an excellent precious tree species suitable for interplantation under the Ph. edulis forests.
Response of Non-structural Carbon and Aboveground Biomass Allocation of Phyllostachys edulis in the Cutting Zone to Fertilization Patterns
LI Shi-kun
2023, 42(3): 33-39.   doi: 10.12390/jbr2022127
Abstract(40) PDF(34)
【Objective】 Through analyzing the non-structural carbohydrates of the leaves and aboveground organ biomass of neonatal bamboo in the cutting zone,the best fertilization mode was sought to improve the resistance of bamboo to the disturbance of strip cutting. 【Method】 In this study,the orthogonal experimental design was adopted (the reserved zone of the first strip cutting was used as the current cutting zone,and the cutting zone of the first strip cutting was used as the current reserved zone),and the experiments of three factors and three levels, i.e.the cuttingstrip width,the rare earth fertilizer dosage and the ratio of compound fertilizer to biochar fertilizer were carried out, so that the non-structural carbohydrate of the leaves and aboveground organ biomass of Moso bamboo (Phyllostachys edulis) under different fertilization modes were analyzed. 【Result】 The results showed that the cuttingstrip width was an important factor affecting the soluble sugar and aboveground biomass of bamboo leaves of the cutting zone.【Conclusion】 The best fertilization mode to improve the resistance of bamboo leaves to strip cutting was A2B2C2,that is,8 m,35 kg·hm-2 rare earth fertilizer dosage,and 7∶3 ratio of compound fertilizer to biochar fertilizer.
Research Effects of Different Canopy Densities on the Growth of Chimonobambusa utilis Planted under the Deciduous Soft Broad-leaved Forest
BAI Zu-yun, LI Chang-wei, ZHAO Jing, ZU Wan-qiao, WEI Hong-bing, WANG Kai
2023, 42(3): 40-44.   doi: 10.12390/jbr2023020
Abstract(46) PDF(33)
【Objective】 In order to achieve the goal of scientifically selecting plots for planting bamboo under the forest,improving cultivation measures for bamboo under the forest,improving forest productivity,and promoting the development of the bamboo industry in Zhaotong City,Yunnan Province.【Method】 Chimonobambusa utilis forest planted under deciduous soft broad-leaved forests with different canopy densities was selected in Erxi Village,Taiping Town,Shuifu City,Zhaotong City,Yunnan Province. 5 clusters of Ch. Utilis were randomly selected to investigate the number of bamboo shoots,the diameter of bamboo shoots,the number of bamboo plants,the diameter and height of bamboo. 【Result】 The results showed that the influence on the number of shoots and bamboo plants was as follows:canopy density 0.3>canopy density 0.9>canopy density 0.6. The influence on the average ground diameter of bamboo shoots and bamboo ground diameter is as follows:canopy density 0.3>canopy density 0.6>canopy density 0.9. The results of the impact on bamboo height were as follows:canopy density 0.6>canopy density 0.9>canopy density 0.3. 【Conclusion】 The following conclusions can be drawn through analysis:there is a negative correlation between the shoot and ground diameter of young bamboo forests in Jinfo Mountain and the canopy density of soft broad-leaved forests.The canopy density of soft broad-leaved forest is consistent with the number of shoots and bamboo,with the maximum at a canopy density of 0.3. The height of bamboo is the highest when the canopy density of soft broad-leaved forest is 0.6. Through F test at 95% reliability,the canopy density of soft broad-leaf forest has no significant impact on the number of shoots,bamboo shoot diameter,bamboo number,bamboo ground diameter and height.
Effect Analysis on Technology of Integrated Management of Water and Fertilizer for Bamboo Forests of Bambusa oldhamii for Shoot
LI Jian-hua, YUAN Jin-ling, YUE Jin-jun
2023, 42(3): 45-49.   doi: 10.12390/jbr2023007
Abstract(73) PDF(79)
【Objective】In order to improve the cultivation and management level of Bambusa oldhamii forests for shoot. 【Method】The comparison between the technology of integrated management of water and fertilizer and the traditional management mode was carried out. 【Result】The results show that the technology of integrated management of water and fertilizer can effectively advance the shooting period by 10 days, increasing the yield by 38.47% and the economic benefit by 51.45% respectively. 【Conclusion】The technology of integrated management of water and fertilizer can effectively improve the economic benefits of B. oldhamii forests for shoot.
Bamboo Weaving Technology in Sichuan Province
WU Jie-yu, CHEN Hong, WU Zhi-hui, FEI Ben-hua, ZHNAG Wen-fu
2020, 39(1): 90-94.  
[Abstract](853) [PDF 882KB](196)
Landscape Evaluation and Reconstruction Strategies of Scenic Recreation Bamboo Forests in Southwest China
LIU Ge-yan, WANG Yu-qian, HUANG Yin-shu, SHENG Zhi-yi, HUANG Xiao, CHEN Qi-bin, JIANG Ming-yan
2020, 39(2): 66-73.  
[Abstract](3934) [PDF 4180KB](188)
研究以西南地区竹林风景区为研究对象,运用层次分析法(AHP法)构建了包含5个准则层、20个指标层的风景竹林林内景观评价指标体系,其中准则层权重为林内美学指标(0.286 4) > 竹林健康指标(0.244 2) > 林分结构指标(0.176 9) > 林下特征指标(0.166 3) > 林木测树指标(0.126 2);运用美景度评价法(SBE法)研究了每个准则层中的主要评价指标(平均枝下高、立竹密度、倒伏度、林下层整齐度、通视性)的类目等级与竹林美景度值的相关性。研究结果表明人们偏爱枝下高在5.5 m以上、竹林密度适当(散生竹6 000~12 000株·hm-2,丛生竹700~1 100丛·hm-2)、几乎没有倒伏(或倒伏竹株数≤2株·100m-2)、林下层整齐、通视性在20 m以上的竹林,由此提出了风景竹林林内景观改造提升建议。
The Influence of Developing Understory Economy of Moso Forests on Rural Revitalization——A Case Study of Quzhou City, Zhejiang Province
XIU Cheng-ming, YU Hai-han, GAI Xu, ZHANG Jia-jia, BIAN Fang-yuan
2020, 39(2): 79-84.  
[Abstract](485) [PDF 3643KB](71)
Research Progress of International Bamboo Forest Carbon Sequestration in the Last 30 Years Based on Bibliometric Analysis
ZHANG Hong-yan, ZHOU Yu-feng, ZHANG Yuan, XU Xiao-jun, LI Chong, XU Lin
2020, 39(1): 13-23.  
[Abstract](1543) [PDF 6284KB](101)
通过文献计量学可视化分析方法客观评价国际竹林碳汇研究进程,了解国际竹林碳汇研究前沿,从而进一步推动中国竹林碳汇研究的发展。采用VOSviewer软件和文献计量学方法,以Web of Science数据库核心合集为数据源,分析近30 a国际竹林碳汇研究的历程。结果表明:①国际竹林碳汇研究发文量呈井喷式增长;②竹林碳汇研究主要集中于中国、美国、日本3个国家,研究作者群体呈现"大分散、小聚集";③研究方向呈现多元化趋势,以环境科学为最多;④竹林碳汇研究的资助机构以中国国家自然科学基金为最多,资助文献达到354篇,H指数最高;⑤竹林碳汇目前研究内容逐渐多样化,在竹林生态系统碳汇精准监测、竹林碳汇的影响机制、竹林土壤微生物与土壤碳循环机理等成为近几年的研究热点。通过对国内外的关键词共现分析,了解竹林碳汇领域整体研究的背景,分析了竹林碳汇研究的阶段历程,得出竹林碳汇研究的热点和发展趋势,对今后的研究具有一定的参考价值。
The Optimization of Bamboo Heat Treatment Process
HONG You-you, WENG Fu-jin, PAN Xin
2020, 39(2): 45-50.  
[Abstract](1784) [PDF 2733KB](264)
对竹材饱和蒸汽炭化热处理工艺参数进行了优化研究,分析其对竹材加工废水和竹材颜色的影响,试验结果表明,竹材热处理时间和饱和蒸气压对其废水排放量和COD值均呈正相关,即饱和蒸气压越高、处理时间越长,则废水排放量越多、COD值越高;且当饱和蒸汽压超过4.2 MPa·s时(对应热处理温度为250℃左右),竹材加工废水COD值跃增。通过色差L*、b*、ΔE*值与蒸煮饱和蒸气压和炭化时间的线性关系,建立竹材色差与热处理工艺的相关性数学模型,根据现有竹材产品颜色预估热处理工艺。具此分别对浅色系、中深色系、深色系加工竹材进行工艺优化,相比与传统工艺,优化竹材热处理工艺分别降低单位质量废水排放量11.53%、11.32%、12.5%,总有机物排放量分别降低51.91%、43.03%、28.56%,具有较好的实际生产指导意义。
The Response of Stoichiometry of Leaf Carbon,Nitrogen and Phosphorus of Phyllostachys edulis Forests to Altitude
HUANG Shu-rong, XIE Yan-yan, CHEN Shuang-lin, GUO Zi-wu
2020, 39(1): 73-78.  
[Abstract](1535) [PDF 1103KB](99)
Bamboo Weaving Process Characteristics in Yunnan
SHI Jiang-jing, WEI Ke-liang, FEI Ben-hua, MA Xin-xin, CHEN Hong
2020, 39(1): 86-89.  
[Abstract](827) [PDF 877KB](87)
Improvement of Structural Strength of Furniture Based on Finite Element Analysis
HUANG Peng-fei, LI Fang-fei, ZHANG Lei
2021, 40(4): 13-21.   doi: 10.12390/jbr2022016
[Abstract](380) [PDF 6398KB](63)
The Application of Bamboo Fiber in Automobile Composites
2020, 39(2): 89-93.  
[Abstract](513) [PDF 852KB](88)
Impact of Different Nitrogen Fertilizer on Growth and Development of Bambusa emeiensis Shoots
TAN Jia-rui, CHEN Yu-peng, XU Gang, REN Peng, CAO Ying, HU Shang-lian
2020, 39(1): 79-85.  
[Abstract](1379) [PDF 3261KB](61)
Preliminary Study on Early Shooting and High Yield Cultivation Technology of Pleioblastus amarus
XIAO Long-hua, WU Bo-lin, HU Biao, LI Chao-de, XUE Xing-fu
2020, 39(2): 15-18.  
[Abstract](1817) [PDF 3319KB](240)
Xuyong county is rich in Pleioblastus amarus resources, covering an area of more than 40,000 mu. Pleioblastus amarus forests are mainly distributed in Longfeng, Xuyong, Tianchi, Shuiwei, and Lianghe town, their management is extensive, most of them are in a state of desolation, and the economic benefits are very poor. In order to improve the economic benefits of Pleioblastus amarus forests, poverty alleviation and cooperation experts from Zhejiang and Sichuan province carried out an early-shooting and high-yield cultivation technology experiment in Pleioblastus amarus forests in 2019. The experimental forest with an area of 13.6 Mu was established by replacing conventional covering materials with waste bamboo chips. The results showed that the surface soil temperature was obviously increased by the covering waste bamboo chips. The bamboo shoots appeared 77 days earlier than normal control and the shooting period was extended to 82 days. The yield was 24 t·hm-1 and the benefit was 260 thousand Yuan·hm-2. The covering cost was greatly reduced and the economic benefit was improved. The post-coverage waste bamboo chips can be reused as culture medium material of edible fungi under the forests to realize the secondary utilization. A set of early-shooting and high-yield cultivation technology of Pleioblastus amarus was proposed, this may provide a demonstration for farmers to increase their income and overcome poverty in Sichuan Province.
An Elite Variety of Bambusa wenchouensis ‘Gonghou Provenance’
YUE Jin-Jun, YUAN Na, LIN Feng, YUAN Jin-Ling
2020, 39(2): 1-3.  
[Abstract](1576) [PDF 4619KB](75)
The Bambusa wenchouensis ‘Gonghou Provenance’ is an elite variety with tall culm,thick culm wall,long internodes,thin branches,fine timber qualities,cold tolerance,and high yield, which has been bred from a large number of provenances. Its adult shoots mostly grow up to a height of 12-16 m,a diameter of 8-10 cm,an internode length of 37-50 cm,and a wall thickness of 16-20 mm. Its annual bamboo productivity can reach above 30 t·hm-2. The bamboo has good properties and long fibers, being good for bamboo plywood and paper making. It has a good cold resistance and can be planted in the northern margin of the adaptive zone of sympodial bamboos. Its main branches are thin, and convenient for culm harvest and transport.