Circular Economy最新文献_第2页

Formulating efficient P-rich biobased starter fertilizers: Effects of acidification and pelletizing on fertilizer properties 配制高效的富含 P 的生物基起始肥料：酸化和造粒对肥料特性的影响

Circular Economy

Pub Date : 2024-10-19 DOI: 10.1016/j.cec.2024.100111

Pietro Sica , Dorette Müller-Stöver , Jakob Magid

Animal-derived biowastes can be alternatives to mineral phosphorus fertilizers. However, they typically have lower efficiency and higher transport costs because of their low bulk density. Pelleting can reduce their volume and facilitate their use as placement fertilizers but may also decrease phosphorus availability. This study examined how acidification and pelletizing affect phosphorus availability in biowastes. Digestate solid fraction and meat and bone meal were treated in four ways: (1) untreated (U), (2) acidified (A), (3) untreated pelletized (UP), and (4) acidified pelletized (AP). These treatments were tested in soil incubation and pea growth experiments, with fertilizers placed 5 cm beneath the seeds to evaluate their effectiveness as placement fertilizers. Acidification significantly enhanced the phosphorus solubility of DSF and MBM by approximately 5 and 7 times respectively, while pelletizing acidified materials reduced it. In the incubation experiment, acidified materials in the powdery form showed the highest soil water-extractable phosphorus, with no significant differences among U, UP, and AP ways. In the rhizobox experiment, pelletizing untreated digestate significantly reduced plant dry matter compared to the untreated fibrous form (from 2.0 g to 1.35 g). Acidified and acidified pelletized digestate treatments resulted in the highest shoot dry matter (2.8 g and 2.95 g, respectively), surpassing even triple the amount of superphosphate (2.53 g). For meat and bone meal, the acidified powder led to the highest plant growth (2.0 g), while untreated powder resulted in the lowest amount of plant growth (0.4 g), which was lower than that of the negative control (0.6 g). No significant differences were noted between untreated and acidified pellets. These findings indicate that acidification enhances phosphorus availability in biowastes, while pelletizing reduces it. The acidified pelletized digestate solid fraction has lower volume and higher P use efficiency than its untreated material, showing higher plant growth when compared to mineral P fertilizer.

动物产生的生物废料可以作为矿物磷肥的替代品。不过，由于体积密度较低，它们通常效率较低，运输成本较高。造粒可以减少它们的体积，便于将其用作投放肥料，但也可能降低磷的可用性。本研究探讨了酸化和造粒如何影响生物废料中磷的可用性。沼渣固体部分和肉骨粉有四种处理方法：(1) 未经处理 (U)，(2) 酸化 (A)，(3) 未经处理造粒 (UP) 和 (4) 酸化造粒 (AP)。这些处理方法在土壤培养和豌豆生长实验中进行了测试，肥料放置在种子下方 5 厘米处，以评估其作为放置肥料的效果。酸化可大大提高 DSF 和 MBM 的磷溶解度，分别提高了约 5 倍和 7 倍，而酸化材料造粒则降低了磷溶解度。在培养实验中，粉状酸化材料显示出最高的土壤水提取磷，而 U、UP 和 AP 三种方式之间没有显著差异。在根瘤菌箱实验中，与未经处理的纤维状沼渣相比，未经处理的沼渣造粒会显著减少植物干物质（从 2.0 克减少到 1.35 克）。酸化和酸化造粒沼渣处理的芽干物质最高（分别为 2.8 克和 2.95 克），甚至超过过磷酸钙（2.53 克）的三倍。就肉骨粉而言，酸化粉末导致的植物生长量最高（2.0 克），而未经处理的粉末导致的植物生长量最低（0.4 克），低于阴性对照（0.6 克）。未经处理的颗粒和酸化颗粒之间没有明显差异。这些研究结果表明，酸化可提高生物废料中磷的可用性，而造粒则会降低磷的可用性。与未经处理的材料相比，酸化造粒后的沼渣固体部分体积更小，磷的利用效率更高，与矿物磷肥相比，植物生长速度更快。

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引用次数: 0

Isothermal pyrolysis of discarded bakelite: Kinetics analysis and batch pyrolysis studies 废弃电木的等温热解：动力学分析和批量热解研究

Circular Economy

Pub Date : 2024-09-01 DOI: 10.1016/j.cec.2024.100102

Pabitra Mohan Mahapatra , Dipransu Pradhan , Sachin Kumar , Achyut Kumar Panda

Plastic is widely used, leading to an increase in plastic waste in the environment and resulting in pollution. Plastic waste can currently be managed differently and reduced by converting it into useful products via different methods. The extensive use of thermosetting polymers such as bakelite, which are nonrecyclable, has led to an increase in bakelite scrap and pollution. Therefore, minimizing pollution due to such waste requires sustainable, modern, eco-friendly, and economical recycling technology and the upgrading of existing recycling technology. This work reports the recycling of discarded bakelite through pyrolysis and a kinetic study of the isothermal pyrolysis of bakelite via model fitting methods as well as product analyses. Therefore, isothermal degradation experiments for discarded bakelite were carried out at different temperatures (300, 350, 400, 450, and 500 °C) for 2 h. The isothermal degradation of bakelite follows the D₁-diffusion model fitting method, with an activation energy (E_a) of 17.178 kJ/mol and an Arrhenius constant (A) of 0.095 min⁻¹. The kinetic information provided throughout the research will aid in the development of an appropriate reactor for the valorization of discarded bakelite. Batch pyrolysis of bakelite gives the highest yield of 39.12% pyrolytic waxy oil at 450 °C. The presence of components such as alkanes, cycloalkenes, alkenes, alcohols, ethers, and aromatic compounds in the pyrolytic waxy oil and residue was confirmed by FTIR and GC‒MS analysis.

塑料被广泛使用，导致环境中的塑料垃圾增加，造成污染。目前，可以通过不同的方法将塑料垃圾转化为有用的产品，从而以不同的方式管理和减少塑料垃圾。电木等热固性聚合物不可回收，其广泛使用导致电木废料和污染增加。因此，要最大限度地减少这些废料造成的污染，就必须采用可持续的、现代的、环保的和经济的回收技术，并对现有的回收技术进行升级。这项工作报告了通过热解回收废弃电木的情况，并通过模型拟合方法和产品分析对电木等温热解进行了动力学研究。因此，在不同温度（300、350、400、450 和 500 °C）下对废弃电木进行了 2 小时的等温降解实验。电木的等温降解遵循 D1 扩散模型拟合方法，活化能（Ea）为 17.178 kJ/mol，阿伦尼乌斯常数（A）为 0.095 min-1。整个研究过程中提供的动力学信息将有助于开发适当的反应器，以实现废弃电木的价值化。在 450 °C的温度下，批量热解电木的最高产率为 39.12% 的热解蜡油。傅立叶变换红外光谱和气相色谱-质谱分析证实了热解蜡油和残渣中存在烷烃、环烯烃、烯烃、醇、醚和芳香族化合物等成分。

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引用次数: 0

Characterizing the packaging waste generation patterns and carbon emissions of university delivery service 描述大学快递服务的包装废弃物产生模式和碳排放情况

Circular Economy

Pub Date : 2024-09-01 DOI: 10.1016/j.cec.2024.100103

Huabo Duan , Guanghan Song , Qiuxia Zou , Ruichang Mao , Xiao Liu

As the main consumer group for online shopping and ordering fast food, young people—particularly university students—have contributed to a substantial amount of packaging waste. In the present study, the material flow method was employed to quantify the generation and end-of-life flows of packaging waste from both the express delivery and food delivery sectors at universities in China. Moreover, this study takes reusable packaging materials for food delivery services as a case study to evaluate their environmental benefits through a simplified life cycle assessment approach. The results show that approximately 1.7 (±0.3) million metric tons and 123 (±1.0) kilo metric tons of packaging waste were generated from express delivery and food delivery services, respectively, for university students in 2021. Although reusable food packaging is more complex and costly than regular disposable food packaging is, our modeling results show that reusable food packaging has significant emission reduction benefits under the current practice of 63 cycles per year of actual operation at a specific university. The reusable packaging mode in universities is feasible from an environmental perspective; however, it faces significant challenges due to a few concerns among stakeholders, such as high costs and inadequate recycling supply systems.

作为网购和订购快餐的主要消费群体，年轻人尤其是大学生产生了大量的包装废弃物。本研究采用物质流方法，量化了中国高校快递和餐饮行业包装废弃物的产生量和生命末期流向。此外，本研究还以送餐服务的可重复使用包装材料为案例，通过简化的生命周期评估方法对其环境效益进行评估。结果显示，2021 年大学生快递和送餐服务产生的包装废弃物分别约为 170 (±0.3) 万公吨和 123 (±1.0) 千公吨。虽然可重复使用的食品包装比普通的一次性食品包装更复杂、成本更高，但我们的建模结果表明，在目前特定高校每年实际运行 63 次的情况下，可重复使用的食品包装具有显著的减排效益。从环保角度看，高校的可重复使用包装模式是可行的，但由于利益相关者的一些担忧，如成本高、回收供应系统不完善等，这种模式面临着巨大的挑战。

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引用次数: 0

3D printing of alkali-activated geopolymers for sustainable and circular economy advancements 三维打印碱活性土工聚合物，促进可持续和循环经济发展

Circular Economy

Pub Date : 2024-09-01 DOI: 10.1016/j.cec.2024.100101

Arslan Yousaf, Ans Al Rashid, Muammer Koç

The urgent global challenges of climate change and resource overconsumption highlight the need for sustainable innovations in the construction industry. Ordinary Portland cement, a vital construction material, significantly contributes to carbon emissions. Alkali-activated materials have emerged as promising alternatives. Three-dimensional printing (3DP) has gained attention in construction, because it offers efficiency and sustainability benefits. This study addresses the integration of alkali-activated materials and 3DP, focusing on circular economy implications. This study examines 1200 research articles from the Scopus database and comprehensively reviews 47 articles on 3DP of geopolymer structures. This study identifies critical research gaps, including a lack of focus on 3DP for alkali-activated materials, circular economy models, optimal mixtures, anisotropy mitigation, reinforcement strategies, and scalability. These insights highlight the transformative potential of 3DP with alkali-activated materials in sustainable construction, fostering a circular economy.

气候变化和资源过度消耗是全球面临的紧迫挑战，这凸显了建筑业进行可持续创新的必要性。普通硅酸盐水泥是一种重要的建筑材料，但却大大增加了碳排放量。碱活性材料已成为前景广阔的替代品。三维打印（3DP）在建筑领域备受关注，因为它具有高效和可持续发展的优势。本研究探讨了碱活性材料与 3DP 的结合，重点关注循环经济的影响。本研究考察了 Scopus 数据库中的 1200 篇研究文章，并对 47 篇有关土工聚合物结构 3DP 的文章进行了全面评述。本研究确定了关键的研究差距，包括缺乏对碱活性材料 3DP 的关注、循环经济模式、最佳混合物、各向异性缓解、加固策略和可扩展性。这些见解凸显了 3DP 与碱活性材料在可持续建筑领域的变革潜力，促进了循环经济的发展。

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引用次数: 0

Malachite green dye removal with aluminosilicate nanopowder from aluminum dross and silicomanganese slag 利用铝硅酸盐纳米粉体从铝渣和硅锰渣中去除孔雀石绿染料

Circular Economy

Pub Date : 2024-08-19 DOI: 10.1016/j.cec.2024.100100

Mostafa Mahinroosta , Rozita M Moattari , Ali Allahverdi , Pooria Ghadir

Malachite green is a persistent, bioaccumulative, mutagenic, carcinogenic, and teratogenic dye that poses significant risks in water sources, making its removal from water a critical necessity. This study aims to fabricate a sorbent comprising amorphous aluminosilicate nanopowder utilizing silicomanganese slag (SMS) and secondary aluminum dross (SAD) waste materials to remediate dye-contaminated water. The silica and alumina components of the SMS and SAD were extracted as sodium silicate and sodium aluminate leachates, respectively, through an effective hydrometallurgical conversion process. An empirical formula of Al₂O₃·2.3SiO₂ was deduced from the X-ray fluorescence analysis of the synthesized material. The X-ray diffraction (XRD) pattern indicated the amorphous nature of the synthesized aluminosilicate, with no evidence of nanocrystals or ordered clusters observed via high-resolution transmission electron microscopy (TEM). Based on TEM micrographs, the aluminosilicate particles ranged in size from 20 to 80 nm. The synthesized aluminosilicate nanopowder was utilized to treat wastewater containing malachite green dye, demonstrating a remarkable dye removal efficiency of 97% after a 15-min contact time using 30 mg of adsorbent in a 30 mL dye solution at 200 rpm. The methodology proposed in this study could facilitate the production of amorphous aluminosilicate powder as a high-value product from industrial waste. Studies on its reusability demonstrated that it could remove over 90% of the dye after three cycles of use.

孔雀石绿是一种具有持久性、生物蓄积性、诱变性、致癌性和致畸性的染料，在水源中具有很大的风险，因此必须将其从水中去除。本研究旨在利用硅锰炉渣（SMS）和二次铝渣（SAD）废料制造一种由无定形硅酸铝纳米粉体组成的吸附剂，以修复被染料污染的水体。通过有效的湿法冶金转化过程，SMS 和 SAD 中的二氧化硅和氧化铝成分分别以硅酸钠和铝酸钠浸出液的形式被提取出来。通过对合成材料的 X 射线荧光分析，推导出 Al2O3-2.3SiO2 的经验公式。X 射线衍射（XRD）图显示合成的铝硅酸盐为无定形性质，通过高分辨率透射电子显微镜（TEM）没有观察到纳米晶体或有序团簇。根据 TEM 显微照片，硅酸铝颗粒的大小在 20 纳米到 80 纳米之间。利用合成的铝硅酸盐纳米粉体处理含有孔雀石绿染料的废水，在 200 转/分钟的转速下，在 30 毫升染料溶液中加入 30 毫克吸附剂，接触 15 分钟后，染料去除率达到 97%。本研究提出的方法有助于从工业废料中生产出无定形铝硅酸盐粉末这种高价值产品。对其可重复使用性的研究表明，在使用三个周期后，它可以去除 90% 以上的染料。

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引用次数: 0

Distribution, occurrence, and environmental risks of heavy metals in hazardous waste: A regional study in Beijing, China 危险废物中重金属的分布、发生和环境风险：中国北京地区研究

Circular Economy

Pub Date : 2024-08-03 DOI: 10.1016/j.cec.2024.100099

Dan Wu , Yanjun Liu , Lingyi Meng , Guilan lu , Yazhuo Chen , Ziliang Yang

Hazardous waste from industrial production has become a global concern because of its impact on the environment and human health. However, studies on heavy metals in regional hazardous waste are rare. Thus, this study examined 93 hazardous waste samples in Beijing in 2019, to assess the distribution, occurrence, and potential eco-environmental risks of heavy metals in such waste. The results indicated high concentrations of Zn, Cu, and Ni in hazardous waste, and the leaching toxicity of Ni (270.60 mg/L), Cu (524.1 mg/L), and Pb (136.23 mg/L) exceeded Chinese identification standards for hazardous waste. Heavy metals in hazardous waste have been primarily found in remote counties around the locations of industrial enterprises. The total amount of the heavy metals followed the order: Zn > Cu > Ni > Ba > Mn > Pb. Based on the migration abilities of their detected forms, heavy metals were classified into three categories (high, middle, and low migration abilities) to characterize their potential to enter the environment. The detected amounts of heavy metals with high and middle migration ability followed the order: Zn > Cu > Ni > Mn > Pb > Ba. The potential environmental risk of heavy metals was evaluated using the potential environmental risk index, resulting in the following ranking: Ni > Pb > Mn > Zn > Cu > Ba. Daxing District exhibited the highest total environmental risk and environmental risk per unit area, whereas Miyun District showed the highest environmental risk per secondary sector of the economy and unit of GDP. This was attributed to Beijing's industrial structure. The results of this study provide fundamental data for the management and control of hazardous waste in Beijing and are expected to aid in preventing and managing environmental risks caused by such waste.

由于工业生产产生的危险废物对环境和人类健康的影响，它已成为全球关注的问题。然而，有关地区危险废物中重金属的研究却很少见。因此，本研究检测了 2019 年北京市的 93 个危险废物样本，以评估此类废物中重金属的分布、存在情况和潜在的生态环境风险。结果表明，危险废物中锌、铜和镍的浓度较高，其中镍（270.60 mg/L）、铜（524.1 mg/L）和铅（136.23 mg/L）的浸出毒性超过了中国危险废物鉴别标准。危险废物中的重金属主要出现在工业企业所在地周边的偏远县城。重金属的总含量依次为锌；铜；镍；钡；锰；铅。根据检测到的重金属形态的迁移能力，将重金属分为三类（高迁移能力、中迁移能力和低迁移能力），以确定其进入环境的可能性。高迁移能力和中迁移能力重金属的检测量依次为Zn > Cu > Ni > Mn > Pb > Ba。使用潜在环境风险指数对重金属的潜在环境风险进行了评估，得出以下排序：镍；铅；锰；锌；铜；钡。大兴区的环境总风险和单位面积环境风险最高，而密云区的第二产业环境风险和单位 GDP 环境风险最高。这与北京的产业结构有关。研究结果为北京市危险废物的管理和控制提供了基础数据，有助于预防和管理危险废物造成的环境风险。

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引用次数: 0

What Can We Learn From the Bankruptcy of Renewcell? Some Limitations of Business-Case-Based Circular Transition 我们能从 Renewcell 的破产中学到什么？基于商业案例的循环过渡的一些局限性

Circular Economy

Pub Date : 2024-07-01 DOI: 10.55845/tfhb2038

Hervé Corvellec, Alison F. Stowell

Circular start-ups are vectors of hope for a circular transition. But what does a circular champion’s bankruptcy tell us? That a structural barrier to the circular transition is the total dependence on the ability of circular businesses to be profitable.

循环型初创企业是循环转型的希望载体。但是，循环型企业的破产又能说明什么呢？循环转型的结构性障碍是完全依赖循环型企业的盈利能力。

引用次数: 0

What is the University For These Days? Rethinking the Foundations of the ‘Circular Campus’ 如今的大学为了什么？反思 "循环校园 "的基础

Circular Economy

Pub Date : 2024-07-01 DOI: 10.55845/bdcu6970

K. Hobson, Megan O’Byrne

In line with growing concerns about the negative environmental impacts of Higher Education Institutions’ (HEIs) core activities, Circular Economy (CE) interventions are appearing across campuses, focussing on e.g., curriculum content, operations, and resource-use, and/or research. In parallel, researchers are increasingly exploring the aims, barriers, processes, and outcomes of attempts to make HEIs more ‘circular’. However, this growing literature often fails to connect with broader critiques of prevailing CE goals and processes, to consider the types of CE being enacted and if other forms of CE are possible and desirable in HEIs. In response, this paper discusses data from research interviews undertaken as part of a project that explored on-campus CE initiatives at a sample of UK and Irish HEIs. It reports on key interview themes, which are HEIs as spaces of over-consumption; as testbeds for new CE practices: and as sites of CE degrowth: and makes the case for HEIs to ask fundamental, radical questions—i.e., ‘what is the university for these days?’—as a pivotal part of CE projects and systems across HEIs.

随着人们日益关注高等教育机构（HEIs）核心活动对环境的负面影响，循环经济（CE）干预措施正在校园中出现，重点是课程内容、运营、资源利用和/或研究。与此同时，研究人员也在越来越多地探索使高等院校更加 "循环 "的目标、障碍、过程和结果。然而，这些不断增加的文献往往未能与对现行行政首长协调会目标和过程的更广泛批判联系起来，也未能考虑正在实施的行政首长协调会的类型，以及高等院校是否可能和需要其他形式的行政首长协调会。为此，本文讨论了在英国和爱尔兰高等院校抽样调查校内行政首长计划项目中开展的研究访谈所获得的数据。本文报告了关键的访谈主题，即高等院校是过度消费的空间；是新的行政首长协调会实践的试验场；是行政首长协调会退化的场所；并提出了高等院校提出根本性的激进问题的理由，即 "大学如今是为了什么？"--这是高等院校行政首长协调会项目和系统的关键部分。

引用次数: 0

The biofactories: Quantifying environmental benefits of the wastewater circular economy in Chile using life cycle assessment 生物工厂：利用生命周期评估量化智利废水循环经济的环境效益

Circular Economy

Pub Date : 2024-06-13 DOI: 10.1016/j.cec.2024.100091

The wastewater circular economy promises improved environmental impacts within the food-water-energy nexus. This requires verification as the global sanitation sectors seek to improve environmental impacts and achieve integrated water management. Life cycle assessment (LCA) has been used to compare novel technologies for wastewater treatment and recovery, but research addressing plant-wide improvements of co-product resource recovery using real data from full-scale plants is still needed, particularly in a Latin American context. In Chile, two wastewater treatment plants (WWTPs) have embraced the circular economy configuration, recovering treated effluent, biosolids, and biogas, in addition to implementing advanced nitrogen removal using different technologies. The LCA of these two WWTPs demonstrated that Plant A improved 8 out of 10 impact categories compared to the baseline conventional scenario, while Plant B improved 5 categories out of 10. The analysis of the two plants showed the influence of influent quality on environmental impacts and the trade-off that occurs between the different technologies implemented. Plant B generated larger environmental credits through increased biogas and biosolids recovery due to thermal hydrolysis pre-treatment and anaerobic digestion, combined with cogeneration of heat and power. Plant A implemented water recovery, which provided benefits on a smaller magnitude but to more impact categories. Therefore, both plants improved environmental impacts through the wastewater circular economy, but further improvements in system configurations are recommended in each.

废水循环经济有望改善食物-水-能源关系中的环境影响。这需要验证，因为全球卫生部门都在努力改善环境影响，实现综合水管理。生命周期评估（LCA）已被用于比较废水处理和回收的新技术，但仍需要利用全规模工厂的真实数据，研究如何在全厂范围内改善副产品资源回收，特别是在拉丁美洲。在智利，有两家污水处理厂（WWTP）采用了循环经济配置，除了使用不同的技术实施先进的脱氮之外，还回收了处理后的污水、生物固体和沼气。这两家污水处理厂的生命周期评估表明，与基线传统方案相比，A 工厂改善了 10 个影响类别中的 8 个类别，而 B 工厂则改善了 10 个影响类别中的 5 个类别。对这两家污水处理厂的分析表明，进水质量对环境影响的影响以及不同技术之间的权衡。B 工厂通过热水解预处理和厌氧消化以及热电联产，增加了沼气和生物固体回收量，从而产生了更多的环境信用额度。A 工厂实施了水回收，带来的效益较小，但影响类别较多。因此，两家工厂都通过废水循环经济改善了对环境的影响，但建议每家工厂进一步改进系统配置。

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引用次数: 0

Rethinking Regional Embeddedness and Innovation Systems for Transitions Towards Just, Responsible, and Circular Bioeconomies 反思区域嵌入性和创新体系，向公正、负责任和循环型生物经济转型

Circular Economy

Pub Date : 2024-06-01 DOI: 10.55845/dtfi9420

Michael P. Schlaile, Jonathan Friedrich, J. Zscheischler

Few studies have explicitly explored regional embeddedness and both the inconsistencies and injustices of circular bioeconomy (CBE) innovations. To better navigate the normative dimension of these innovations and CBE transitions in general, our article presents a threefold argument for the relevance of the regional level of analysis. First, CBE innovations are influenced by and affect regional metabolisms and actor constellations, assets, and (biophysical) resources within regional innovation systems (RIS). Second, thoroughly exploring these dimensions of regional (un)embeddedness can reveal ethical concerns, including potential "dark sides" and injustices, such as exclusivity and exploitation. Third, to address these concerns in CBE research and governance, we outline four facets: complementing the RIS as a framework and policy approach, balancing creative and destructive measures, addressing the need for more inclusive regional CBE policies, and establishing dedicated intermediaries to better govern regional CBE transitions. In summary, this conceptual article provides starting points for further research and proactive measures that help govern the normative dimension and the design of CBE transitions at the regional level, promoting inclusivity, justice, responsibility, and legitimacy for both innovation and exnovation.

很少有研究明确探讨区域嵌入性以及循环生物经济（CBE）创新的不一致性和不公正性。为了更好地把握这些创新和 CBE 过渡的规范性维度，我们的文章从三个方面论证了区域层面分析的相关性。首先，社区经济创新受到区域创新系统（RIS）内的区域新陈代谢和参与者组合、资产和（生物物理）资源的影响。其次，深入探讨区域（非）嵌入性的这些层面可以揭示伦理问题，包括潜在的 "阴暗面 "和不公正，如排他性和剥削。第三，为了在社区经济研究和治理中解决这些问题，我们概述了四个方面：将区域创新体系作为框架和政策方法的补充，平衡创造性和破坏性措施，满足对更具包容性的区域社区经济政策的需求，以及建立专门的中介机构以更好地管理区域社区经济过渡。总之，这篇概念性文章为进一步的研究和前瞻性措施提供了出发点，有助于在地区层面管理社区经济过渡的规范性层面和设计，促进创新和革新的包容性、公正性、责任性和合法性。

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引用次数: 0