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Field Performance of Refractory Softwoods Treated with CA or ACQ after 10 Years of Exposure in Korea and Canada 在韩国和加拿大用CA或ACQ处理耐火软木10年后的田间表现
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-03-01 DOI: 10.13073/fpj-d-22-00004
R. Stirling, J. Ra, J. Ryu, Jieying Wang
Korean wood preservation standards require deep penetration, which precludes the use of many refractory species. However, such treatments of refractory species have been shown to be effective in other parts of the world. A field test was therefore initiated to evaluate the performance of western hemlock, a moderately refractory species, and white spruce, a highly refractory species, pressure treated with either copper azole or alkaline copper quaternary under Korean field conditions that included both decay and termite hazards. After 10 years of exposure in a ground proximity and field stake test in Jinju, Korea, the treated materials remained largely sound, while untreated controls failed much earlier, largely due to termite attack. These data suggest that material that does not meet current Korean penetration requirements could still provide effective protection against biodegradation under Korean conditions. Decay was more advanced in matched treated stakes exposed at a test site in Canada than at the site in Korea.
韩国木材防腐标准要求深度渗透,这就排除了许多耐火材料的使用。然而,在世界其他地区,这种对难熔物种的处理已被证明是有效的。因此,启动了一项现场测试,以评估在包括腐烂和白蚁危害在内的韩国现场条件下,用唑铜或碱性季铜进行压力处理的中等耐火物种西铁杉和高耐火物种白云杉的性能。在韩国金州的一次近地面和现场桩柱试验中暴露了10年后,经过处理的材料基本上保持完好,而未经处理的对照组则更早失败,主要是由于白蚁的攻击。这些数据表明,不符合当前韩国渗透要求的材料在韩国条件下仍然可以提供有效的生物降解保护。在加拿大的一个试验场暴露的经过匹配处理的木桩中,Decay比在韩国的试验场更先进。
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引用次数: 0
Perceptions of Producers of Small Wooden Objects in Brazil's Central-West Region about Highlighted Attributes of Nine Species from the Caatinga Biome 巴西中西部地区小木器生产者对Caatinga生物群系中9个物种的突出属性的看法
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-03-01 DOI: 10.13073/fpj-d-21-00068
Camila Costa de Seabra, H. Angelo, Alexandre Nascimento de Almeida, J. Gonçalez, Maristela Franchetti de Paula, Gislayne da Silva Goulart, S. Afonso, Elisa Palhares de Souza, A. Gontijo
Brazil has regions where the potential for wood supply is substantial and the lack of knowledge about forest species becomes a possible barrier to its acceptance, as is the case of the wood from the Caatinga biome. This research aims to identify the highlights attributes of wood from this biome in the perception of producers of small wooden objects as a premise for market studies. For this purpose, nine species of this biome were used as study objects for exploratory research with semistructured interviews and use of word cloud and similarity analyses with the IRAMUTEQ software. As a result, it was found that, in the perception of the producers, Caatinga biome species have peculiarities with the “color” aspect of the wood, which is the attribute considered important in adding value to products and, moreover, making it possible to group the woods according to their subjective peculiarities. It was found that a more effective participation of little-known species and an increase in demand due to greater acceptance in the market could enable the use in association with and/or as a replacement for traditional woods. In addition, the analysis of qualitative data with IRAMUTEQ is still incipient in the scientific forestry area; the present research contributes methodologically, demonstrating that its use increases the rigor of the investigation and the identification of prominent attributes of wood species, specifically those of the Caatinga studied, as alternatives for the market beyond firewood and charcoal.
巴西有一些地区的木材供应潜力很大,缺乏对森林物种的了解可能成为人们接受木材供应的障碍,Caatinga生物群落的木材就是这种情况。本研究的目的是在小型木制品生产商的感知中,确定来自该生物群落的木材的突出属性,作为市场研究的前提。为此,以该生物群系的9个物种为研究对象,采用半结构化访谈、词云和IRAMUTEQ软件相似性分析进行探索性研究。结果发现,在生产者的感知中,Caatinga生物群落物种具有木材“颜色”方面的特性,这是对产品增加价值的重要属性,而且可以根据其主观特性对木材进行分组。研究发现,如果能更有效地利用鲜为人知的树种,以及由于市场接受程度提高而使需求增加,就能与传统木材结合使用和(或)替代传统木材。此外,在科学林业领域,利用IRAMUTEQ对定性数据进行分析仍处于起步阶段;本研究在方法上作出了贡献,表明它的使用增加了调查的严谨性和确定木材品种的突出属性,特别是所研究的Caatinga木材品种,作为薪柴和木炭以外的市场替代品。
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引用次数: 0
Improved Radio-Frequency Heating through Application of Wool Insulation during Phytosanitary Treatment of Wood Packaging Material of Low Moisture Content 低含水率木质包装材料植物检疫处理中应用羊毛保温材料改善射频加热
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-03-01 DOI: 10.13073/fpj-d-22-00009
J. Janowiak, K. Szymona, M. Dubey, Ron Mack, K. Hoover
The International Standard of Phytosanitary Measures No. 15 (ISPM-15) requires signatory countries of the International Plant Protection Convention to use approved treatment methods on wood packaging materials used in international trade to significantly reduce the risk of spreading alien species. One of the approved methods utilizes dielectric heating (DH) to raise the temperature in the wood to 60°C through the profile of the workload for 1 minute to eradicate pests. To improve the uniform distribution of heat within a wood workload using radio frequency, a form of DH, we tested the use of a wool blanket as a thermal insulation material for wood pallet components. Three species commonly used in the pallet industry—yellow poplar (Liriodendron tulipifera L.), northern red oak (Quercus rubra L.), and eastern white pine (Pinus strobus L.)—of low moisture content were used to generate matched sets of stringer samples. Internal wood temperatures were monitored continuously during treatment to comply with the ISPM-15 schedule. Applying a wool (keratin) insulation blanket increased the rate of heating, improved heating uniformity throughout the workload, and reduced moisture loss compared to uninsulated controls for some wood species, but not all. These findings were most significant for pallet materials with higher moisture content and more permeability (white pine and yellow poplar). By reducing treatment time, power consumption costs can be reduced using wool insulation when implementing the ISPM-15 DH treatment schedule.
国际植物检疫措施标准第15号(ISPM-15)要求《国际植物保护公约》签署国对国际贸易中使用的木质包装材料使用经批准的处理方法,以显著降低外来物种传播的风险。其中一种被批准的方法是利用电介质加热(DH)将木材中的温度提高到60°C,通过工作量的剖面提高1分钟,以消灭害虫。为了使用射频(DH的一种形式)改善木材工作量内热量的均匀分布,我们测试了使用羊毛毯作为木托盘组件的隔热材料。利用低含水率的黄杨树(Liriodendron tulipifera L.)、北方红橡树(Quercus rubra L.)和东部白松(Pinus strobus L.)三种托盘工业常用的树种,生成匹配的线材样品。在处理过程中,连续监测木材内部温度,以符合ISPM-15时间表。使用羊毛(角蛋白)隔热毯增加了加热速度,改善了整个工作负荷的加热均匀性,与未隔热的控制相比,对某些木材种类(但不是全部)减少了水分损失。这些发现对于含水量较高、透气性较好的托盘材料(白松和黄杨)最为显著。通过减少处理时间,在实施ISPM-15 DH处理计划时,使用羊毛绝缘可以降低能耗成本。
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引用次数: 0
Carbon Analysis of Wood Composite Panels 人造板的碳分析
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-03-01 DOI: 10.13073/fpj-d-22-00010
Maureen E. Puettmann
Wood composite panels (WCP) are well known for their environmentally friendly attributes of being sustainable, renewable, biodegradable, and predominantly made from wood residues generated during lumber and plywood production. This paper focuses on the ability of WCPs to store carbon for long periods of time in nonstructural applications such as cabinets, furniture, and flooring. WCPs, include particleboard, medium density fiberboard (MDF), and hardboard–engineered wood siding and trim (EWST). These panels are anticipated to have an average service life of 25–30 years. In 2019, there was an estimated 291 million cubic meters (m3) of WCPs in use in North America that corresponds to a carbon pool of 354 million metric tons of carbon dioxide equivalents. This WCP carbon pool is enough to offset 24 years of cradle-to-gate cumulative carbon emissions (fossil and biogenic sources) emitted during production of these panels. In other words, producing and using WCPs stores carbon for long periods because the amount of carbon emitted during the production of the panels is far less than what the panels themselves are capable of storing over their lifetime of product use.
木质复合板(WCP)以其可持续、可再生、可生物降解的环保特性而闻名,主要由木材和胶合板生产过程中产生的木材残留物制成。本文重点研究了wcp在橱柜、家具和地板等非结构应用中长时间储存碳的能力。wcp包括刨花板、中密度纤维板(MDF)和硬板工程木壁板和饰边(EWST)。预计这些面板的平均使用寿命为25-30年。2019年,北美估计使用了2.91亿立方米的wcp,相当于3.54亿吨二氧化碳当量的碳库。这个WCP碳库足以抵消这些电池板生产过程中从摇篮到门的24年累积碳排放(化石和生物源)。换句话说,生产和使用wcp可以长期储存碳,因为在生产过程中排放的碳量远远少于面板本身在产品使用寿命期间能够储存的碳量。
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引用次数: 1
The Effect of Kerf Thickness on Hardwood Log Recovery 路缘厚度对硬木采收率的影响
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-01-01 DOI: 10.13073/fpj-d-21-00065
R. E. Thomas, U. Buehlmann
When sawing a log into lumber or other products, the saw blade removes material to separate the wood fibers between the resulting two parts, a loss of material that is commonly referred to as saw kerf. Thicker kerfs result in greater waste and less material available to produce lumber. Over the past decades, with the advancement of materials and technology, saw blade thickness has decreased. However, the reduction in material loss owing to a reduction in saw kerf may not always translate into a statistically significant increase in lumber product recovery. In this study, we explored the effect of saw kerf thickness on lumber recovery for a range of hardwood log diameters using the US Forest Service's Log Recovery Analysis Tool (LORCAT) sawmill simulation tool. Results indicate that the recovery gains realized depend upon the log diameters sawn, the lumber target thickness, and the change (reduction) in the thickness of the saw kerf.
当将原木锯成木材或其他产品时,锯片会去除材料,将木材纤维分离在两部分之间,这种材料的损失通常被称为锯口。更厚的切口导致更多的浪费和更少的材料可用于生产木材。在过去的几十年里,随着材料和技术的进步,锯片的厚度有所下降。然而,由于锯缝减少而减少的材料损失可能并不总是转化为木材产品回收率在统计上的显著增加。在这项研究中,我们利用美国林务局的原木恢复分析工具(LORCAT)锯木厂模拟工具,探讨了锯口厚度对一系列硬木原木直径的木材回收的影响。结果表明,采收率的实现取决于所锯的原木直径、木材目标厚度和锯缝厚度的变化(减小)。
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引用次数: 0
Chair Development on the Basis of Body Pressure Distribution—A Research Effort 基于人体压力分布的椅子发展研究
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-01-01 DOI: 10.13073/fpj-d-22-00006
L. Dénes, Balázs Bencsik, P. Horváth, Réka Mária Antal
Surveys and studies show that more and more employees perform high- or low-skilled white-collar work predominantly in sitting postures. Therefore, comfortable sitting plays an important role in reducing the risk of musculoskeletal disorders and other harmful effects. Research efforts focus on reducing these risks by designing ergonomic chairs with multiple adjustment possibilities, allowing the chair to fit to the user's body shape or assuring a dynamic seating where the user's lower body is in continuous movement. This article summarizes the results of a research effort that evaluated the effect of several factors on sitting comfort based on body pressure distribution. The effects of foam elasticity, foam layer arrangement order, and seat support elasticity were investigated as well as the chair seat type (kneeling chair, saddle chair). Results were used to determine the optimal chair cushion including the layered foam system and seat support type. On the basis of our findings a new ergonomic chair was developed combining the advantages of static and dynamic sitting.
调查和研究表明,越来越多的员工以坐姿为主从事高技能或低技能的白领工作。因此,舒适的坐姿在减少肌肉骨骼疾病和其他有害影响的风险方面起着重要作用。研究工作的重点是通过设计具有多种调节可能性的符合人体工程学的椅子来降低这些风险,使椅子适合用户的身体形状或确保用户下半身持续运动的动态座椅。本文总结了一项研究的结果,该研究评估了基于身体压力分布的几个因素对坐姿舒适度的影响。研究了泡沫弹性、泡沫层排列顺序、座椅支撑弹性以及椅座类型(跪椅、鞍椅)对座椅支撑弹性的影响。结果确定了最优的坐垫,包括层状泡沫体系和座椅支撑类型。根据我们的研究结果,一种结合静态和动态坐姿优点的新型人体工程学椅子被开发出来。
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引用次数: 0
Wear Resistance and Hardness Assessment of Five US Hardwoods for Bridge Decking and Truck Flooring 五种美国硬木的耐磨性和硬度评定
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-01-01 DOI: 10.13073/fpj-d-21-00074
L. Khademibami, R. Shmulsky, Dusty Snow, Alan Sherrington, Iris B. Montague, R. Ross, Xiping Wang
The wear resistance and Janka hardness of five United States hardwood species were evaluated for potential use in bridge decking and truck flooring. The species tested include ash (Fraxinus sp.), hickory (Carya sp.), red oak (Quercus sp.), sweetgum (Liquidambar styraciflua), and white oak (Quercus sp.). The specimens were prepared with the sizes of 1 by 2 by 4 inches (2.54 by 5.08 by 10.16cm) for abrasion test and 1 by 2 by 6 inches (2.54 by 5.08 by 15.24 cm) for Janka hardness testing. The specimens were cut from 30 individual parent boards of random width with clear sections for each species. The abrasion and Janka hardness tests were performed according to the American Society of Testing and Materials standards. All wear and hardness data were statistically analyzed by 1-way analysis of variance. The results of this study demonstrated that sweetgum with the lowest density had the greatest amount of thicknesses loss and thus lowest wear resistance. White oak was found to have the least thicknesses loss, thus highest wear resistance among the hardwood species tested. Hickory, with the highest density, had the highest hardness among the hardwood species tested, but it had relatively lower wear resistance comparing to ash, red oak, and white oak.
对美国五种硬木的耐磨性和Janka硬度进行了评估,以确定其在桥梁桥面和汽车地板中的潜在用途。测试的物种包括白蜡树(Fraxinus sp.)、山核桃(Carya sp.)、红橡树(Quercus sp.)、甜桉树(Liquidambar styraciflua)和白橡树(Quercus sp.)。试样尺寸分别为1 × 2 × 4英寸(2.54 × 5.08 × 10.16cm)进行磨损试验和1 × 2 × 6英寸(2.54 × 5.08 × 15.24 cm)进行Janka硬度试验。标本从30个随机宽度的单独母板上剪下,每个物种都有清晰的剖面。磨损和Janka硬度测试是根据美国测试和材料协会的标准进行的。所有磨损和硬度数据采用单因素方差分析进行统计学分析。本研究结果表明,密度最低的甜口香糖厚度损失最大,因此耐磨性最低。白橡木的厚度损失最小,因此在所有硬木中耐磨性最高。山核桃木密度最高,硬度最高,但耐磨性与灰栎、红栎和白栎相比相对较低。
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引用次数: 3
Physical-Functional Properties and Characterization of Green Leaves in Nalgonda District, Telangana State: Nontimber Forest Products 特伦甘纳州纳尔贡达区绿叶的物理功能特性和特征:非木材林产品
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-01-01 DOI: 10.13073/fpj-d-21-00069
K. Soujanya, B. Kumari, E. Jyothsna, V. Kiran
Naturally grown green leafy vegetables contribute nutrients, fiber, antioxidants, dietary diversity, household food security, income, and livelihood to rural people. Due to their good vitamin, mineral, and fiber properties, green leaves are considered to be protective foods. The physical-functional properties of four fresh and dried (Aerva lanata, Corchorus olitorius, Celosia argentea, and Leucas aspera) uncultivated green leafy vegetables available in Nalgonda District of Telangana State, India, were analyzed and compared. The results of the study reported that fresh Aerva lanata has high pH and fresh Corchorus olitorius has highest relative reconstitution capacity. It was found that fresh Celosia argentea has high shrinkage and dehydration ratio, and the leaves of Leucas aspera had high rehydration capacity. Dried leaf powder of Aerva lanata has high flowability, cohesiveness, pH, total soluble solids, water-retention capacity, and oil-retention capacity. Dried Corchorus olitorius was found to have high bulk density, tapped density, and rehydration capacity on dried weight basis. Leucas aspera powder had a high water absorption index and hydrophilic-lipophilic index. It was found that water activity of all the leaf powders is below 0.5 so they can be stored at room temperature. Physical and functional properties of uncultivated greens powders help in development of value-added products, product-specific equipment, and behavior of leaf powders at processing and packing levels.
天然种植的绿叶蔬菜为农村人民提供营养、纤维、抗氧化剂、饮食多样性、家庭粮食安全、收入和生计。由于其良好的维生素、矿物质和纤维特性,绿叶被认为是保护性食物。对印度特伦甘纳州纳尔贡达区四种新鲜和干燥的未开垦绿叶蔬菜(Aerva lanata、Corcholor olitorius、Celosia argentea和Leucas aspera)的物理功能特性进行了分析和比较。研究结果表明,新鲜羊栖菜具有较高的pH值,而新鲜小珊瑚具有最高的相对重建能力。结果表明,新鲜的银杉具有较高的收缩率和脱水率,而银杉的叶片具有较高的复水能力。苜蓿干叶粉具有较高的流动性、内聚性、pH值、总可溶性固形物、保水性和保油性。干珊瑚被发现具有高堆积密度、振实密度和基于干重的再水合能力。银耳粉具有较高的吸水率和亲水亲脂性。研究发现,所有叶粉的水分活度都低于0.5,因此它们可以在室温下储存。未开垦的绿色粉末的物理和功能特性有助于开发增值产品、产品专用设备以及叶粉在加工和包装层面的行为。
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引用次数: 0
A Preliminary Assessment of Industry 4.0 and Digitized Manufacturing in the North American Woodworking Industry 北美木工行业工业4.0与数字化制造的初步评估
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-01-01 DOI: 10.13073/fpj-d-21-00064
M. Bumgardner, U. Buehlmann
Industry 4.0, a term referring to the digitization of manufacturing, enhanced automation, and data-driven production systems, promises to bring rapid change to the secondary woodworking industry. Manufacturers in this sector, many being small in size and scale, may be challenged to remain competitive without understanding how Industry 4.0 principles might affect their operations. A study conducted with subscribers to a major secondary wood industry trade journal found that few North American woodworking companies were familiar with the term “Industry 4.0.” However, that did not mean they were not making decisions about, investing in, and implementing digitization–computerization (digit–comp) in their manufacturing operations. Well over half of study respondents indicated that their firms had made a significant investment in digit–comp over the past 3 years. Several respondents stated that software and technology integration was the most unexpected problem encountered, and that skilled labor was difficult to find. A variety of training types were sought by firms that had made significant Industry 4.0-related investments, especially training related to machine operation. Although a plurality of respondents from both small and large firms indicated that increased digit–comp would not change their number of employees, small firms were more likely to say more employees would be needed and large firms were more likely to perceive a decrease in employees. Perhaps the greatest challenge to successful implementation of Industry 4.0 will be the lack of a strategic plan—just 19 percent of small firms indicated having a vision of how digitization might affect their business.
工业4.0是一个术语,指的是制造业的数字化、增强的自动化和数据驱动的生产系统,有望给二级木工行业带来快速变化。该行业的许多制造商规模较小,如果不了解工业4.0原则如何影响其运营,可能会面临保持竞争力的挑战。一项针对一家主要二手木材行业期刊订阅者的研究发现,很少有北美木工公司熟悉“工业4.0”这个术语。然而,这并不意味着他们没有在制造业务中做出决策、投资和实施数字化-计算机化(数字化-计算机)。超过一半的受访者表示,他们的公司在过去3年里对数字公司进行了重大投资。一些受访者表示,软件和技术集成是遇到的最意想不到的问题,而且很难找到熟练的劳动力。对工业4.0进行重大投资的公司寻求各种培训类型,特别是与机器操作相关的培训。尽管来自小型和大型公司的多数受访者表示,增加的数字薪酬不会改变他们的员工数量,但小型公司更有可能说需要更多的员工,而大型公司更有可能认为员工数量会减少。也许成功实施工业4.0的最大挑战将是缺乏战略计划——只有19%的小公司表示对数字化如何影响他们的业务有一个愿景。
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引用次数: 2
Sustainable Development—International Framework—Overview and Analysis in the Context of Forests and Forest Products—Competitiveness and Policy 可持续发展-国际框架-森林和林产品背景下的概述和分析-竞争力和政策
IF 0.9 4区 农林科学 Q3 FORESTRY Pub Date : 2022-01-01 DOI: 10.13073/fpj-d-20-00053
Annika Hyytiä
Green marketing in forest products (e.g., by certified forest products) can be done by forest certification while sustainable development may be seen as an opportunity in new markets. Innovations to meet customer needs in key markets have an effect on company competitiveness. The bioeconomy policy accounts very much for the sustainable use of biomass resources. Sustainable development can include certification and trade. Green approaches to accentuate sustainable development and stakeholder collaboration is key to an emerging bioeconomy. Customers as stakeholders are linked with sustainable development and green business entities during the policy making phase. Marketing and communication in the green business sector is essential for sustainable product development and offers new market opportunities. Likewise, strategy and policy are important to be competitive in the business environment. The Corporate Social Responsibility (CSR) philosophy is one strategy that can enhance competitiveness and trade in the bioeconomy market, and can also be a driver in marketing and sustainable development. This article is qualitative research based and covers research articles and literature found in key academic databases such as Proquest, Academic Search Complete [EBSCO], Agris, CAB Abstracts, SCOPUS [Elsevier], Web of Science [ISI] and Google Scholar and other internet sites). The bioeconomy means the use of renewable biological resources from land and sea, like crops, forests, fish, animals and micro-organisms to produce food, materials and energy (EU 2021). International and national policies of Green Economy definition can be found at the UN, Green Growth at the OECD and the Bioeconomy at the EU Web pages.
森林产品的绿色营销(例如通过经认证的森林产品)可以通过森林认证来实现,而可持续发展可以被视为新市场的一个机会。满足关键市场客户需求的创新对公司竞争力有影响。生物经济政策对生物质资源的可持续利用具有重要意义。可持续发展可以包括认证和贸易。强调可持续发展和利益相关者合作的绿色方法是新兴生物经济的关键。在政策制定阶段,客户作为利益相关者与可持续发展和绿色商业实体联系在一起。绿色商业部门的营销和沟通对可持续产品开发至关重要,并提供了新的市场机会。同样,战略和政策对于在商业环境中保持竞争力也很重要。企业社会责任(CSR)理念是一种可以增强生物经济市场竞争力和贸易的战略,也是营销和可持续发展的驱动力。本文以定性研究为基础,涵盖了Proquest、academic Search Complete[EBSCO]、Agris、CAB Abstracts、SCOPUS[Elsevier]、Web of Science[ISI]、Google Scholar和其他互联网网站等关键学术数据库中的研究文章和文献。生物经济意味着利用陆地和海洋的可再生生物资源,如作物、森林、鱼类、动物和微生物,生产食品、材料和能源(欧盟2021)。绿色经济定义的国际和国家政策可以在联合国、经合组织的绿色增长和欧盟网页上的生物经济中找到。
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引用次数: 4
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Forest Products Journal
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