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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).
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Leaf Traits and Allometric Growth Patterns of Camellia sinensis in Response to Pleioblastus amarus Expansion into Tea Plantations
, Available online  , doi: 10.12390/jbr2024010
【Objective】 In the distribution area of Pleioblastus amarus,it’s commonly seen that P. amarus plants expand in the Camellia sinensis garden. Investigating the response characteristics of C. sinensis leaf morphological traits and their allometric growth patterns to the heterogeneous environment after the expansion of P. amarus reveals valuable insights,which can provide a reference for controlling bamboo expansion within the tea plantation ecosystem and for sustainable management for tea plantation. 【Method】 C. sinensis leaf morphological traits were measured across three experimental sites:the mixed forest interface area (MA),the mixed forest center area (TB),and the pure tea plantation area (TF). Standard principal axis regression analysis was used to analyze variations in leaf morphological factors and their allometric growth patterns in response to bamboo expansion of P. amarus. 【Result】 (1) Along the expansion from P. amarus to tea plantations,C. sinensis leaf traits,including leaf length (LL),leaf width (LW),leaf area (LA),specific leaf area (SLA),asymmetric fluctuation values of leaf width (AF(LW)),and asymmetric fluctuation values of leaf area (AF(LA)),gradually decreased,and peaked in the MA site,while leaf thickness (LT) increased steadily from P. amarus to tea plantations,reaching its maximum in the TF site. (2) In the TB site,LL—LW and SLA—LA demonstrated allometric growth patterns,with the smallest intercept,while no substantial changes were observed in the relative growth relationship between LL—LW and SLA—LA in the MA and TF sites. LA—LL and LA—LW shared a common slope among the three sites,significantly less than 1.00,an allometric growth pattern was observed. The intercepts exhibited an initial increase followed by a decrease along the expansion direction from P. amarus to tea plantations,with notable variations among the sites. 【Conclusion】 The expansion of P. amarus induces changes in the primary leaf morphological traits and their allometric growth patterns in C. sinensis. The expansion from P. amarus to tea plantations leads to changes that C. sinensis leaves are becoming smaller and thicker,notably in the interfacial area of the mixed forests,but the indexes of LL,LW and LA are more responsive to bamboo expansion in the mixed forest center area.
Multidimensional Value Analysis of Bamboo Design and Construction Competitions for Talent Cultivation of Architecture Majors in Colleges and Universities
, Available online  , doi: 10.12390/jbr2024026
To seek the architectural carriers and forms which has the attribute of green and low carbon as well as good artistic performance characteristics in the context of ecological civilization,bamboo architecture bears the brunt. Competitions centering around bamboo architectural design and construction have also emerged,how to get more young students involved,give full play to the ability of creative expression,so as to make bamboo architecture show “the vitality of combining of tradition and modernity”,therefrom summarizing and exploring the beneficial training model for cultivating talents in architecture. The paper systematically reviewed through the theoretical research and practical application of bamboo in the field of construction in ancient times and modern times,deeply analyzed the inherent interaction between bamboo design and construction competitions and the cultivation of architecture professionals in colleges and universities,and demonstrated the significance of nurturing architecture professionals through the research and analysis of colleges and universities’ participation in bamboo design and construction competitions. Bamboo design and construction competitions have a multi-dimensional value to the construction of practice bases,teaching and education system,and industry ecological iteration for the training of architecture professionals in colleges and universities. The study summarized the practical effect of comprehensive literacy training for architecture professionals,and proposed to build a multi-dimensional multi-party joint education mode,in order to provide reference for the promotion of architecture professional talent cultivation through the bamboo design and construction competitions.
Comparative Analysis of the Compressive Strength Parallel to Grain of Bamboo Scrimber in Different Design Specifications
, Available online  , doi: 10.12390/jbr2024004
Abstract(17) PDF(6)
【Objective】 To promote the application of bamboo scrimber (BS) in engineering. 【Method】 The compression test of BS parallel to grain was carried out,referring to the wood structural test design methods in China and the United States respectively. A comparative analysis was conducted on the standard values and design values of compression strength of BS under different specifications. 【Result】 The results showed that the typical compressive failure modes of BS according to the Chinese specifications were local buckling failure,diagonal shear failure,and mixed failure,while those according to the American specifications were mainly shear failures. 【Conclusion】 Three distribution models containing the normal distribution,Weibull and lognormal distribution were used to fit the experimental results of BS. Based on the parametric method and non-parametric method,the standard and design values of compressive strength of BS with the Chinese and American specifications were determined respectively. The standard value and design value of compressive strength parallel to grain of BS with the Chinese specifications were 61.69 MPa and 21.84 MPa,respectively,which were 1.11 times and 1.55 times of those with the American specifications respectively. In this paper,the size effect coefficient of the standard value of the compressive strength of BS was calculated to be 0.019,and a conversion formula for the design value of compressive strength parallel to grain of BS with Chinese and American specifications was proposed.
Study on the Asexual Propagation Techniques of Indocalamus latifolius
, Available online  , doi: 10.12390/jbr2024003
Abstract(12) PDF(0)
【Objective】 To explore the effects of asexual propagation with mother bamboo and rhizome seedling on the quantity and quality of Indocalamus latifolius,as well as the effective asexual breeding techniques for I. latifolius to provide high-quality seedlings for the promotion and application of I. latifolius. 【Method】 Transplantation of mother bamboos and rhizomes of I. latifolius was the research object,and the survival rate,the number of new bamboos and the base diameter were compared and analyzed with different number of mother branches of different nodes(1,2,3,4,natural plant) and different lengths of rhizome segments (30,40,50 cm). 【Result】 With the increase of the number of branches left,the survival rate of the transplanted mother bamboo gradually decreased,the survival rate of 3-node branches was 87.4%,and the survival rate of 4-node branches was 83%,which was the critical point of technical standard for afforestation. However,the number and base diameter of new bamboos gradually increased,the number of new bamboos with 3 − 4 nodes was more than 2.5,and the base diameter of new bamboos was more than 0.87 cm. There were no significant changes in the number and base diameter of new bamboos grown from rhizome segments of 30 − 50 cm,and the survival rate of bamboos grown from rhizome segments of 40 and 50 cm was significantly higher than that of 30 cm. 【Conclusion】 Asexual breeding of I. latifolius with mother bamboo of 3 − 4 nodes and 40 − 50 cm rhizome segments can achieve better seedling cultivation effect.
Adsorption Performance of Activated Carbon from Bamboo Charcoal with Coal Molding
, Available online  , doi: 10.12390/jbr2023070
Abstract(37) PDF(11)
【Objective】 To investigate the effects of proportioning between coal and biomass on the particle strength,apparent density,iodine adsorption value,methylene blue adsorption value,and pore structure  etc. of molded activated carbon preparation. 【Method】 In this study,bamboo charcoal with coal was used to prepare molded carbon,and granular activated carbon was prepared through steam activation. Representational means like scanning electron microscope,thermogravimet,nitrogen isothermal adsorption and desorption were used to analyze the physicochemical properties of the molded activated carbon made with bamboo charcoal and coal. 【Result】 The results show that introduction of bamboo charcoal will increase the adsorption values of  iodine and methylene blue of the molded activated carbon,but it will  reduce the strength and apparent density of the molded activated carbon,affecting its usage effects. 【Conclusion】 When the proportion of coal and bamboo charcoal was 1∶3,the indexes of adsorption performance and use strength both met the requirements,and the adsorption values of iodine  and  methylene blue were 934.7 mg·g-1,165 mg·g-1  respectively,and the strength was 86.4%,well meeting the regulations of national standard for drinking water,which has a good prospect for commercial application.
Characteristics of Branching and Leave Spreadingof Young Bamboosin DegeneratedForestsof Phyllostachys violascens ‘Prevernalis’
, Available online  , doi: 10.12390/jbr2023071
Abstract(21) PDF(8)
【Objective】 To explore the characteristics of branching and leaf spreading of forests of young Phyllostachys violascens ‘Prevernalis’,our study aims to reveal the trade-off relationship between the branches and leaves and the countermeasures to adapt to the environment,which can provide a reference for the scientific management of degraded bamboo forests. 【Method】 With the bamboo forests of degraded and normal growth as the contrast,the upper,middle,and lower branches and leaves from young bamboos were collected. The branch length,base diameter,biomass of branches and leaves,leaf number,single leaf area,and specific leaf area of each branch were measured,and variance and allometric growth were analyzed. 【Result】 Compared with normal forests,the leaf length,leaf width,leaf thickness,single leaf area,and single leaf dry weight in degraded bamboo forests decreased significantly,and fresh and dry weight of branches and leaves,total leaf area,and leaf area density decreased by more than 1/3,but leafing intensity and specific branch length increased significantly. There were no significant responses to the degraded bamboo forests in branch length,branch width,branch wiseness ratio,specific leaf area,leaf number,leaf and branch biomass ratio,leaf area ratio,and leaf number density. There was a positive correlation between leaf dry weight and single leaf area,stem dry weight and leaf dry weight and leaf area,but the allometric growth index decreased under the influence of bamboo forest degradation. 【Conclusion】 The degradation of bamboo forests seriously affects the morphogenesis of new bamboo branches and leaves and the ability of branching and leave spreading. Upon the degraded stands,the young bamboos tend to quantity growth of branches and leaves,leaf spreading efficiency of young bamboo branches decreases,which demonstrate the adaptive responses to environmental stressors.
Study on Optimization of Preserved Conditions in Distiller’s Grainsfor Shoots of Phyllostachys edulis
, Available online  , doi: 10.12390/jbr2023061
Abstract(16) PDF(4)
【Objective】 To explore the methods for preserving the raw bamboo shoots with distiller’s grains,then to determine the optimal conditions for preserving raw bamboo shoots. 【Method】 The study adopted L9(34)orthogonal test and principal component analysis to study the factors influencing preservation conditions for raw shoots of Phyllostachys edulis. The 4 factors adopted in the experiment were immersion time,concentration of distiller’s grains,species of distiller’s grains and preservation time,respectively,and there were 3 levels set for every factor. In addition,principal component analysis was carried out on six indexes,of shoot quality,i.e. crude fiber,soluble sugar,crude fat,crude protein,amino acid and water content. 【Result】 The results showed that crude fat,crude protein and amino acid content were the main evaluation indexes,which could explain 88.08% variance. The 4 factors influencing the shoot quantity of Ph. edulis were ranked as preservation time>immersion time>species of distiller’s grains >concentration of distiller’s grains,among which,preservation time played the decisive role in raw shoot preservation. 【Conclusion】 The optimal combination of all factors is A1B3C2D3,that is,5 minutes of immersion time,60% concentration of distiller’s grains,red distiller’s grains and 20 days of preservation time.
Research on Innovative Design of Cost Control for Bamboo and Wood Products Based on QFD/TRIZ/VE
, Available online  , doi: 10.12390/jbr2024014
Abstract(73) PDF(2)
【Objective】 The main purpose of writing this article is to solve the problems of substandard quality,homogeneous types,and unreasonable prices of bamboo and wood products,and to achieve innovative design of bamboo and wood products and cost control in the design stage. 【Method】 Innovate and integrate Quality Function Deployment Theory (QFD),Inventive Problem Solving Theory (TRIZ),and Value Engineering Theory (VE) for cost control oriented design processes of bamboo and wood products. 【Result】 Build a QFD product quality house to transform user needs and cost factors into product technical characteristics;Use TRIZ theory to transform negative correlation problems into standard problems and solve them;Based on VE theory,complete the design scheme and cost evaluation,and output the design schemes of children’s bamboo and wood toys. 【Conclusion】 The integrated application of QFD,TRIZ,and VE has certain feasibility and effectiveness,which can effectively improve design efficiency,complete innovative design of bamboo and wood products,and achieve pre-cost control of bamboo and wood products.
Study on the Value and Path of Cultivating People in the Dual Integration of Bamboo Culture and Culture of Incorruptibility
, Available online  , doi: 10.12390/jbr2024020
Abstract(45) PDF(14)
As a splendid treasure of Chinese civilization,China’s unique bamboo culture plays a key role in enhancing cultural self-confidence,carrying forward traditional virtues and infiltrating people’s physical and mental development. Its spiritual core is closely related to the values of honesty and integrity in traditional culture. Under the background of construction of culture of incorruptibility in the new era,bamboo culture has injected new kinetic energy and theoretical support for the innovative development of honesty education construction. This study deeply analyzes the evolution and concrete manifestations of bamboo culture and clean culture,and reveals the far-reaching significance and educational value of two-way integration and interaction between the two cultures by interpreting their common values,moral norms and codes of conduct.  Based on the three levels of government policy,science and technology,and cultural communication,this paper proposes a modern education path with four dimensions,namely values,social environment,skill inheritance,and education system,to help the creative transformation and innovative development of bamboo culture,with a view to providing cultural support and spiritual motivation for the construction of culture of incorruptibility and education in China.
Research Progress on the Preparation and Application of Biomimetic Intelligent Superhydrophobic Wood and Bamboo Materials
, Available online  , doi: 10.12390/jbr2024009
Abstract(27) PDF(2)
【Objective】 The paper analyses the latest research progress on superhydrophobic coatings for wood and bamboo,summarizes the application areas and problems of superhydrophobic wood and bamboo,and provides an outlook on their development trends. 【Method】 The superhydrophobic phenomenon results from the interaction between the micro/nano layered structure and low surface energy substances on the surface of wood/bamboo materials,which is a common method for the preparation of superhydrophobic materials. The paper highlights the common preparation methods of coatings of superhydrophobic wood and bamboo materials,including impregnation,sol—gel,wet chemistry and chemical vapour deposition,and analyses the mechanism of superhydrophobic coating formation. 【Result】 Superhydrophobic wood and bamboo materials cover a wide range of applications,and have already shown great application prospect in self-cleaning,self-healing,and oil/water separation. 【Conclusion】 Although superhydrophobic coatings have great potentials in the field of wood and bamboo materials,the problems like durability,mechanical strength,and poor transparency still pose great resistance to its development,therefore,deeper researches on superhydrophobic wood and bamboo materials are expected to be carried out in the future to address these issues.
Exploring the New Path of Revitalizing and Prospering the Bamboo Industry in Zhejiang Province
, Available online  , doi: 10.12390/jbr2023073
Abstract(59) PDF(18)
Bamboo industry is a traditional advantageous industry in China,with advantages in technology,culture and nature. The industrial value of bamboo timber mainly comes from its unique material characteristics and diversity of uses. It can be used as building materials,furniture,handicrafts,etc.,but also can be produced into high value-added products,such as activated carbon,energy materials and biomedical materials. However,the bamboo industry has been developing unevenly for a long time,and still faces many problems of imperfect industrial chain and low market value. Rural area in Zhejiang province is one of the demonstration areas of “common prosperity”construction,for the problems of new ideas,resources integration,innovative bamboo industry technology and management mode in the new path in the development of bamboo industry in Zhejiang province,promoting all parties to work together to explore new development path of bamboo industry to revitalize the bamboo industry revitalization.
Research on Design Strategy for Digital Display of Bamboo Culture from the Perspective of Immersive Experience
, Available online  , doi: 10.12390/jbr2024018
Abstract(55) PDF(11)
【Objective】 This study aims to explore the application of digital means in the dissemination and development of bamboo culture to cater to the modern audience’s pursuit of an immersive exhibition experience. 【Method】 Utilizing the methods of literature review,comparative analysis,and case study,this research subdivides the design for immersive experiences in digital exhibitions into three dimensions:the audience,information,and space,with an investigation on how rich display effects can be achieved through high-level immersion,strong interaction and multi-sensory engagement. The paper proposes a set of strategies and technical pathways for the digital display of bamboo culture,which has been applied in the project of digitalized display renewal of Zhuyun Hall at Zhejiang A&F University,where the potential of digital immersion has been well verified. 【Result】 Based on the audience’s needs for sensory,cognitive,and emotional immersion,as well as the three categories of bamboo culture display(scene,information,and skill),this paper introduces digital display design strategies such as spatial immersion,media integration immersion,and participatory immersion. 【Conclusion】 This study not only provides a technical solution for the innovative display of bamboo culture,but also offers significant reference and inspiration for the innovative exploration of digitalized display design for traditional cultures.
Evaluation Study on Detection Limit Assessment Method for Formaldehyde Emission in Artificial Bamboo Fiberboard
, Available online  , doi: 10.12390/jbr2023053
Abstract(27) PDF(1)
【Objective】 To determine the detection limit of formaldehyde emission detection methods for bamboo-based panels,and provide reference for formaldehyde emission detection work of testing agencies. 【Method】 According to the blank deviation method specified in HJ 168—2020,the detection limit of formaldehyde release from the artificial bamboo fiberboard boards by using the 1 m3 climate box method and desiccator method in GB/T 17657—2022 was evaluated. 【Result】 The results showed that the MDL of the 1 m3 climate chamber method was 0.013 mg·m-3 (10 mm optical path cuvette) and 0.006 mg·m-3 (50 mm optical path cuvette),while the MDL of the desiccator method was 0.035 mg·L-1 (10 mm optical path cuvette) and 0.022 mg·L-1 (50 mm optical path cuvette). The precision and accuracy of the formaldehyde standard solution met the requirements,and the actual detection values of bamboo-wood fiberboard showed good repeatability. 【Conclusion】 The evaluation results of the detection limits of the two methods met the expected requirements;The evaluation limit of the 50 mm optical path cuvette was lower and the actual measurement results of bamboo and wood fiberboard met the expected requirements,therefore,50 mm optical path cuvette is more suitable for the analysis and evaluation of low concentration formaldehyde in bamboo-based panels.
Effect of Grinding Quality and Process on Mechanical Properties of Box-Shaped Member Made by Bamboo Bar under Axial Compression
, Available online  , doi: 10.12390/jbr2023063
Abstract(41) PDF(13)
【Objective】 To study the effects of grinding quality and manual technology on the basic mechanical properties of short and long axial compression rods made of 1 mm×6 mm bamboo strips. 【Method】 112 hollow box compression rods with section size of 6 mm×6 mm were fabricated by planning and grinding bamboo rods with different initial mass. The mass and ultimate bearing capacity of the hollow bar were tested,and the load-mass ratio was calculated. Finally,the influence of three different grinding processes on the mechanical properties of the bar was discussed. 【Result】 After grinding,the mass of the hollow short rod was reduced to 1/2 of the original,but the bearing capacity could reach 350 − 550 N,and the charge-mass ratio was above 560 N·g-1. 【Conclusion】 When selecting bamboo material in model making,the bamboo strip with small initial mass is selected for long rod and the bamboo strip with large initial mass is selected for short rod. The research results can provide reference for the selection and manufacture of rods in the national college students’ structural design competition.
Status of Bamboo Industry Development and Resources Utilization of Bamboo Shoots Shell in Fujian Province
, Available online  , doi: 10.12390/jbr2023065
Abstract(105) PDF(54)
【Objective】 Fujian Province is the key production area of bamboo in China,with rich bamboo forest resources and the production of bamboo shoots ranks No.1 in our country. During the processing of bamboo shoots,there will be a large number of solid wastes like bamboo shoot shells,root stumps etc.,which will cause environmental pollution if they are not utilized. The paper is aimed at finding out the current situation of resources utilization of bamboo shoot shells in Fujian Province. 【Method】 In this paper,we start from the development status of bamboo industry in Fujian Province and analyse the present situation of bamboo shoot processing industry there,with a focus on reviewing the development status of technology for feed,substrate,and fertilizer utilization of bamboo shoot shells. 【Result】 At present,the research of bamboo shoot shell utilization technology is still in the preliminary stage in Fujian Province,and there remain many problems like limited technology and mediocre promotion effect etc. 【Conclusion】 Therefore,it is necessary to increase the research investment into technology of bamboo shoot shell utilization by focusing on the implementation and promotion of the technology of comprehensive utilization of forage,matrix and fertilizer of bamboo shoots shell,and the in-depth utilization of the contents of bamboo shoot shells.
Comparative Study on the Growth of Annual Seedlings from Two Provenances of Chimonobambusa utilis
, Available online  , doi: 10.12390/jbr2023039
Abstract(102) PDF(111)
【Objective】 In order to improve the survival rate and reduce the cost of afforestation,by comparing the growth difference of the seedlings from two provenances of Chimonobambusa utilis,and the excellent seedlings were selected for afforestation in the mountains. 【Method】 In this study,the seeds of Qingba and Huanglian from Tongzi County of Guizhou Province were selected for seedling cultivation,and the growth of annual seedlings from the two provenances of Ch. utilis was compared. 【Result】 The results showed that each index of annual seedlings from two provenances increased with time in a positive proportion,and the growth of each index was small in winter due to the influence of air temperature,the maximum plant height and ground diameter of annual seedlings from Qingba provenance were better than those from Huanglian provenance,but the number of tillers and number of leaves from Huanglian provenance were better than those from Qingba provenance. 【Conclusion】 Through cluster analysis,three indexes of maximum plant height,ground diameter and number of tillers from annual seedlings of Ch. utilis were selected as the comparison indexes,and the seedlings were divided into four grades,grade Ⅰ (excellent),grade Ⅱ (good), grade Ⅲ (medium) and grade Ⅳ (poor),which is expected to provide theoretical basis for the cultivation and introduction.