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2023, 42(3): 1-8.
doi: 10.12390/jbr2023011
Abstract:
【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.
【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.
2023, 42(3): 9-14.
doi: 10.12390/jbr2022121
Abstract:
【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.
【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.
2023, 42(3): 15-21.
doi: 10.12390/jbr2023023
Abstract:
【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.
【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.
2023, 42(3): 22-26.
doi: 10.12390/jbr2022082
Abstract:
【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.
【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.
2023, 42(3): 27-32.
doi: 10.12390/jbr2023035
Abstract:
【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.
【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.
2023, 42(3): 33-39.
doi: 10.12390/jbr2022127
Abstract:
【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.
【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.
2023, 42(3): 40-44.
doi: 10.12390/jbr2023020
Abstract:
【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.
【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.
2023, 42(3): 45-49.
doi: 10.12390/jbr2023007
Abstract:
【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.
【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.
2020, 39(1): 90-94.
摘要：
四川省是中国非物质文化遗产资源大省，其雄厚的文化底蕴孕育了四川特色竹编文化，创造了诸多精美的竹编产品。研究介绍了四川省各个地区的代表竹编工艺，包括成都邛崃的瓷胎竹编、青神县的青神竹编、渠县的刘氏竹编、自贡的龚扇、崇州市的道明竹编。简述了典型代表竹编的工艺特性、编织技艺和特色，让人们深入了解四川地区的竹编工艺，并思考如何在科技时代传承和创新竹编工艺。
四川省是中国非物质文化遗产资源大省，其雄厚的文化底蕴孕育了四川特色竹编文化，创造了诸多精美的竹编产品。研究介绍了四川省各个地区的代表竹编工艺，包括成都邛崃的瓷胎竹编、青神县的青神竹编、渠县的刘氏竹编、自贡的龚扇、崇州市的道明竹编。简述了典型代表竹编的工艺特性、编织技艺和特色，让人们深入了解四川地区的竹编工艺，并思考如何在科技时代传承和创新竹编工艺。
2020, 39(2): 66-73.
摘要：
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。
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。
2020, 39(2): 79-84.
摘要：
林下经济是实现林地生物的多样性以及农、林、牧资源共享，达到优势互补的可持续发展立体复合种养模式。林药复合经营模式是我国最具林业特色的林下经济经营方式之一，做到生态效益、经济效益、社会效益的有机结合。通过实地调查、访谈和资料收集等方式，对浙江省衢州市毛竹林下种植以及林下经济对乡村振兴的影响进行调查；对毛竹林下中草药的发展现状，毛竹林下经济与乡村旅游对乡村振兴的影响，以及林下经济面临的问题展开讨论；并且结合当地实际情况，分析存在的问题，并在此基础上提出毛竹林下经济的建议与展望。
林下经济是实现林地生物的多样性以及农、林、牧资源共享，达到优势互补的可持续发展立体复合种养模式。林药复合经营模式是我国最具林业特色的林下经济经营方式之一，做到生态效益、经济效益、社会效益的有机结合。通过实地调查、访谈和资料收集等方式，对浙江省衢州市毛竹林下种植以及林下经济对乡村振兴的影响进行调查；对毛竹林下中草药的发展现状，毛竹林下经济与乡村旅游对乡村振兴的影响，以及林下经济面临的问题展开讨论；并且结合当地实际情况，分析存在的问题，并在此基础上提出毛竹林下经济的建议与展望。
2020, 39(1): 13-23.
摘要：
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。
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。
2020, 39(2): 45-50.
摘要：
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。
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。
2020, 39(1): 73-78.
摘要：
毛竹是中国重要的经济竹种，区域上具有明显的垂直分布特点。为揭示毛竹林叶片碳氮磷化学计量特征的海拔梯度效应，为毛竹林科学的林分管理与土壤养分补充提供理论依据，测定了3个海拔梯度毛竹林叶片碳（C）、氮（N）、磷（P）含量，分析了其化学计量特征和异速增长关系。结果表明：随着立竹年龄的增大，毛竹林立竹叶片碳、氮、磷含量及N：P均总体上呈降低趋势，而C：N、C：P则总体上呈升高趋势，1度立竹叶片碳、氮、磷含量均显著高于2度、3度立竹，且后2者间碳、氮、磷含量及其化学计量比均无显著差异。随海拔梯度的升高，毛竹林叶片碳含量略有降低，而氮、磷含量呈降低趋势，其中，中、低海拔叶片氮、磷含量显著高于高海拔，且前2者氮含量无显著差异，而磷含量差异显著；叶片C：N、C：P、N：P均呈上升趋势，其中，中、低海拔叶片C：N显著低于高海拔，中、高海拔叶片N：P显著高于低海拔，叶片C：P海拔梯度间差异显著，其他均无显著差异；不同海拔梯度毛竹林叶片碳、氮、磷间呈显著的正异速增长关系，随海拔梯度的升高，C-N、C-P异速增长指数显著下降，而N-P异速增长指数显著提高。研究表明，随海拔梯度的升高，毛竹林叶片氮、磷含量降低，利用率提高，P素限制性作用增强，建议在高海拔毛竹林经营中宜适当增加磷素的补充。
毛竹是中国重要的经济竹种，区域上具有明显的垂直分布特点。为揭示毛竹林叶片碳氮磷化学计量特征的海拔梯度效应，为毛竹林科学的林分管理与土壤养分补充提供理论依据，测定了3个海拔梯度毛竹林叶片碳（C）、氮（N）、磷（P）含量，分析了其化学计量特征和异速增长关系。结果表明：随着立竹年龄的增大，毛竹林立竹叶片碳、氮、磷含量及N：P均总体上呈降低趋势，而C：N、C：P则总体上呈升高趋势，1度立竹叶片碳、氮、磷含量均显著高于2度、3度立竹，且后2者间碳、氮、磷含量及其化学计量比均无显著差异。随海拔梯度的升高，毛竹林叶片碳含量略有降低，而氮、磷含量呈降低趋势，其中，中、低海拔叶片氮、磷含量显著高于高海拔，且前2者氮含量无显著差异，而磷含量差异显著；叶片C：N、C：P、N：P均呈上升趋势，其中，中、低海拔叶片C：N显著低于高海拔，中、高海拔叶片N：P显著高于低海拔，叶片C：P海拔梯度间差异显著，其他均无显著差异；不同海拔梯度毛竹林叶片碳、氮、磷间呈显著的正异速增长关系，随海拔梯度的升高，C-N、C-P异速增长指数显著下降，而N-P异速增长指数显著提高。研究表明，随海拔梯度的升高，毛竹林叶片氮、磷含量降低，利用率提高，P素限制性作用增强，建议在高海拔毛竹林经营中宜适当增加磷素的补充。
2020, 39(1): 86-89.
摘要：
云南省竹林和竹种的分布是中国竹资源最丰富的地区之一，被称之为"世界竹类的故乡"。云南地区竹编工艺历史悠久、文化内涵丰富，是中国传统手工艺品的瑰宝，且被列入国家级非物质文化遗产。通过对云南地区傣族竹编、宜良竹编、绥江竹编3个代表性竹编工艺特性进行研究，总结云南地区竹编各自的特点以及它们的共性。
云南省竹林和竹种的分布是中国竹资源最丰富的地区之一，被称之为"世界竹类的故乡"。云南地区竹编工艺历史悠久、文化内涵丰富，是中国传统手工艺品的瑰宝，且被列入国家级非物质文化遗产。通过对云南地区傣族竹编、宜良竹编、绥江竹编3个代表性竹编工艺特性进行研究，总结云南地区竹编各自的特点以及它们的共性。
2021, 40(4): 13-21.
doi: 10.12390/jbr2022016
摘要：
运用ANSYS有限元分析软件对家具结构强度检测中发现的普遍问题进行理论分析，并选取松木床作为研究对象，根据家具力学性能国家标准中的试验方法，对床铺面集中静载荷试验进行有限元模拟，结果表明：松木床铺面无法满足强度安全要求。为此优化设计提高强度，选用改变床结构和换用重组竹材料2种手段并进行有限元分析，发现2种手段分别可提升床铺面安全系数至1.25和3.16，均有较好的强度优化效果。此外，使用重组竹可使得家具在保证强度前提下更加轻便，也将缓解国内木材短缺的现状，具有广泛前景。
运用ANSYS有限元分析软件对家具结构强度检测中发现的普遍问题进行理论分析，并选取松木床作为研究对象，根据家具力学性能国家标准中的试验方法，对床铺面集中静载荷试验进行有限元模拟，结果表明：松木床铺面无法满足强度安全要求。为此优化设计提高强度，选用改变床结构和换用重组竹材料2种手段并进行有限元分析，发现2种手段分别可提升床铺面安全系数至1.25和3.16，均有较好的强度优化效果。此外，使用重组竹可使得家具在保证强度前提下更加轻便，也将缓解国内木材短缺的现状，具有广泛前景。
2020, 39(2): 89-93.
摘要：
竹纤维指的是天然竹纤维（也称竹原纤维），是一种新型的植物纤维，不同于竹浆纤维、竹炭纤维等化学粘胶再生纤维素纤维。竹纤维作为一种性能优异的基础材料，可广泛应用于纺织、非织造、建筑材料、汽车材料等复合材料生产领域。轻质增强复合材料是实现轻量化的一种重要趋势，常用复合材料的碳纤增强材料成本高，玻纤改性复合材料技术最成熟，但其也存在韧性降低、脆性增加、机械磨损大、加工能耗大、易吸湿、易粗糙、不易降解、废弃难处理等问题。研究发现，以天然环保新材料的竹纤维为增强材料，制备的竹纤维复合材料具有密度小、模量与强度高特点，非常适合汽车部件的轻量化。与传统的复合材料相比，竹纤维复合材料质量更轻，生产能耗更少，在产品的整个生命周期阶段，碳排放量非常少，更符合现代社会"绿色环保和低碳化"的要求。
竹纤维指的是天然竹纤维（也称竹原纤维），是一种新型的植物纤维，不同于竹浆纤维、竹炭纤维等化学粘胶再生纤维素纤维。竹纤维作为一种性能优异的基础材料，可广泛应用于纺织、非织造、建筑材料、汽车材料等复合材料生产领域。轻质增强复合材料是实现轻量化的一种重要趋势，常用复合材料的碳纤增强材料成本高，玻纤改性复合材料技术最成熟，但其也存在韧性降低、脆性增加、机械磨损大、加工能耗大、易吸湿、易粗糙、不易降解、废弃难处理等问题。研究发现，以天然环保新材料的竹纤维为增强材料，制备的竹纤维复合材料具有密度小、模量与强度高特点，非常适合汽车部件的轻量化。与传统的复合材料相比，竹纤维复合材料质量更轻，生产能耗更少，在产品的整个生命周期阶段，碳排放量非常少，更符合现代社会"绿色环保和低碳化"的要求。
2020, 39(1): 79-85.
摘要：
研究浆用慈竹笋生长发育的适宜氮肥形态，对提高竹笋发笋量、生长量以及促进次生细胞壁的增厚和减少林田的氮污染具有重要意义，为慈竹的合理调控和优质栽培提供理论依据。研究设置4个处理，对照组（CK）仅施入磷肥和钾肥，T1施入酰胺态氮及磷肥和钾肥，T2施入硝态氮及磷肥和钾肥，T3施加铵态氮及磷肥和钾肥，研究不同形态氮肥对慈竹生长发育的影响。结果表明：不同形态氮肥处理的竹笋发笋量的动态变化都呈现出"S"型曲线。酰胺态氮处理的累计日均发笋量最高，是未施入氮肥处理的1.23倍，其次为硝态氮处理，是未施入氮肥处理的119%，铵态氮处理最低。酰胺态氮肥处理竹笋的发笋量最多，而不施氮处理的最小。铵态氮肥处理的竹笋木质化要早于酰胺态氮和硝态氮处理。
研究浆用慈竹笋生长发育的适宜氮肥形态，对提高竹笋发笋量、生长量以及促进次生细胞壁的增厚和减少林田的氮污染具有重要意义，为慈竹的合理调控和优质栽培提供理论依据。研究设置4个处理，对照组（CK）仅施入磷肥和钾肥，T1施入酰胺态氮及磷肥和钾肥，T2施入硝态氮及磷肥和钾肥，T3施加铵态氮及磷肥和钾肥，研究不同形态氮肥对慈竹生长发育的影响。结果表明：不同形态氮肥处理的竹笋发笋量的动态变化都呈现出"S"型曲线。酰胺态氮处理的累计日均发笋量最高，是未施入氮肥处理的1.23倍，其次为硝态氮处理，是未施入氮肥处理的119%，铵态氮处理最低。酰胺态氮肥处理竹笋的发笋量最多，而不施氮处理的最小。铵态氮肥处理的竹笋木质化要早于酰胺态氮和硝态氮处理。
2020, 39(2): 15-18.
Abstract:
2020, 39(2): 1-3.
Abstract:
Founded in 1982 quarterly
Used Name：Journal of Bamboo Research
Competent Authorities:
Zhejiang Forestry Bureau
Sponsored by:
Bamboo Research and Development Center, National Forestry and Grassland Administration
Bamboo Branch of Chinese Forestry Society
Zhejiang Academy of Forestry
ISSN1000-6567
CN33-1399/S
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