Fen Zhao , Peng Yang , Qingzhu Gao , Lang Xia , Lingling Fan , Mengmeng Hu
{"title":"Effects of the long-term rice expansion on ecosystem carbon budget in the typical agricultural area of Northeast China","authors":"Fen Zhao , Peng Yang , Qingzhu Gao , Lang Xia , Lingling Fan , Mengmeng Hu","doi":"10.1016/j.spc.2024.11.027","DOIUrl":"10.1016/j.spc.2024.11.027","url":null,"abstract":"<div><div>Extensive rice expansion in northeast China has significantly altered land use and land cover (LULC) changes. However, the impact of long-term rice expansion on regional carbon budget dynamics remains unclear. A major obstacle in addressing this gap is the absence of agricultural LULC information with high spatiotemporal resolution. Here, we selected the Sanjiang Plain experienced dramatic rice expansion as the study area, presenting a framework that integrates high-resolution crop distribution data with a process-based model to quantify the impact of rice expansion on regional carbon budgets. Specifically, we employed a robust deep-learning network for crop mapping based on Landsat data, to reconstruct the spatiotemporal dynamics of rice expansion from 1985 to 2020. We then incorporated these long-term crop maps into the Denitrification-Decomposition (DNDC) model, to explore the effects of rice expansion on the regional carbon budget over this period. Analysis results showed that the rice planting area expanded by 708.64 km<sup>2</sup>/yr, resulting in more than a tenfold increase over the past 36 years. Spatially, rice planting expanded from the southwest to the northeast and from the interior to the exterior. This expansion has resulted in approximately 275 Mt. of CO<sub>2</sub> and 6.92 Mt. of CH<sub>4</sub> greenhouse gas emissions, altering the dynamics of the regional carbon budget and shifting the ecosystem from a carbon sink to a carbon source since 2016. Although the long-term expansion of rice increased soil respiration and CH<sub>4</sub> emissions, it also enhanced soil carbon sequestration through agricultural management practices. These findings greatly enhance our understanding of the ecosystem carbon cycle's response to long-term agricultural LULC changes, providing more accurate data support and scientific evidence for developing low-carbon agricultural policies.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 613-623"},"PeriodicalIF":10.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kari-Anne Lyng , Hanne Møller , Klaus Mittenzwei , Ivar Pettersen , Jakob Vesterlund Olsen , Hanne Fjerdingby Olsen
{"title":"Transforming the food system with a biomass value hierarchy: Sustainability and policy insights","authors":"Kari-Anne Lyng , Hanne Møller , Klaus Mittenzwei , Ivar Pettersen , Jakob Vesterlund Olsen , Hanne Fjerdingby Olsen","doi":"10.1016/j.spc.2024.11.026","DOIUrl":"10.1016/j.spc.2024.11.026","url":null,"abstract":"<div><div>The food system significantly impacts the environment and society. This study examined a shift from a continuation of the current trend (<em>policy as usual</em> scenario) towards a <em>biomass value hierarchy</em> scenario, which focused on optimizing land and biomass use and rethinking the role of livestock production. The <em>biomass value hierarchy</em> was based on circular economy principles, the waste hierarchy, and national self-sufficiency, which eliminated feed import and redistributed protein sources in the diet.</div><div>A Multi-Criteria Decisions Analysis (MCDA) framework was used to assess the two scenarios across four sustainability dimensions: environmental, social, economic and policy. Environmental and social impacts were analysed using life cycle assessment methodology, while economic and policy implications were explored using partial equilibrium modelling, with the Norwegian food system as a case study.</div><div>The results for the environmental dimension indicated that, compared to the <em>policy as usual</em> scenario, the <em>biomass value hierarchy</em> reduced environmental impacts by 8 % to 18 % across the indicators, including climate change, acidification, particulate matter, terrestrial eutrophication and occupation of arable land. Social impacts also improved in categories with the highest social risks, such as equal opportunities for workers, health and safety for farmers, cultural heritage, food security, fair competition, and promoting social responsibility. Contrarily, indicators within the economic dimension revealed reduced profitability, and results within the policy dimension showed a considerable increase in required subsidies, border measures and governmental restrictions on consumption. The study findings indicate that an environmentally and socially sustainable food system is feasible but requires significant political and economic support. Additionally, the study highlights the value of using MCDA when combining different research methods in cross-disciplinary assessments. These results underscore the need for a societal debate on acceptable levels of political intervention and the role of consumers and taxpayers in shaping the future food system.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 602-612"},"PeriodicalIF":10.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Léo Staccioli , Andreia Maria Rodrigues dos Santos , José Gallego , Ana Kalliola , Olesya Fearon , Pablo Ortiz , Walter Pitacco , Ana Carvalho
{"title":"A life cycle assessment model to evaluate the environmental sustainability of lignin-based polyols","authors":"Léo Staccioli , Andreia Maria Rodrigues dos Santos , José Gallego , Ana Kalliola , Olesya Fearon , Pablo Ortiz , Walter Pitacco , Ana Carvalho","doi":"10.1016/j.spc.2024.11.019","DOIUrl":"10.1016/j.spc.2024.11.019","url":null,"abstract":"<div><div>Lignin-based polyols are expected to provide significant environmental benefits by offering new synthetic routes to various types of bio-resins for coating applications. Currently, no models evaluating lignin-based polyols are available in the literature, therefore, the present study introduces a new model to assess environmental impacts associated with the synthesis of lignin-based polyols and to evaluate their potential environmental advantages in bio-product manufacturing. The model follows the life cycle assessment methodology and is based on lignin-based polyols production at a pilot scale, beginning with kraft lignin extraction, followed by solvent fractionation. The results indicate that, compared to their petrochemical counterparts, lignin-based polyols demonstrate superior environmental performance under specific conditions, such as the use of bio-based solvents and an appropriate energy mix. Tetrahydrofuran and electricity consumption emerge as the primary hotspots contributing to environmental impact categories such as climate change, fossil resource use, and water use—identified as the main contributors to the overall environmental impact of lignin-based polyol production. An uncertainty analysis was conducted using Monte Carlo simulation. Based on the findings, producers can consider lignin-based polyols as a promising raw material if they replace tetrahydrofuran with its bio-based counterpart and adopt a renewable energy mix for production. This model can be easily extended by researchers and/or practitioners to further evaluate the environmental impacts of bio-products derived from lignin-based polyols. Moreover, the results of this study can guide policymakers in shaping bio-product policies, as lignin-based polyols show promise as a more sustainable chemical alternative.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 624-639"},"PeriodicalIF":10.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A systematic literature review of impactful food waste interventions at the consumer level","authors":"Carole Liechti, Gabriele Mack, Jeanine Ammann","doi":"10.1016/j.spc.2024.11.023","DOIUrl":"10.1016/j.spc.2024.11.023","url":null,"abstract":"<div><div>As consumers contribute largely to the global food waste quantity, many efforts have been made to reduce food waste through interventions. However, knowledge of the impact of the interventions is required to reduce consumers' food waste. We systematically reviewed 49 studies that evaluated 54 interventions to reduce food waste at the consumer level. The studies were assessed according to three criteria: the type of intervention (single- or multi-component), the study design (randomised experiments, non-randomised [quasi] experiments, non-experimental studies), and the impact on food waste reduction (significant reduction, non-significant reduction, no reduction). The majority of interventions were single-component (<em>n</em> = 45), with only a small percentage being multi-component (<em>n</em> = 9). Most interventions resulted in a significant reduction in food waste (<em>n</em> = 36). Furthermore, the majority of the studies used non-randomised (quasi) experiments (<em>n</em> = 35). Multi-component interventions with nudges showed promise for reducing food waste among consumers, with most having a significant impact and leading to the highest food waste reductions (up to 84.3 %). This review synthesises the current state of knowledge regarding the impact of food waste reduction interventions, which can help identify and implement effective interventions in the future.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 552-565"},"PeriodicalIF":10.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sustainability-driven regime shifts in Complex Adaptive Systems: The case of animal production and food system","authors":"Tuomas Kuhmonen , Irene Kuhmonen , Arto Huuskonen","doi":"10.1016/j.spc.2024.11.022","DOIUrl":"10.1016/j.spc.2024.11.022","url":null,"abstract":"<div><div>The role of animal production in sustainability transitions has become the subject of a heated societal debate, and a variety of discourses delineating the role that animal production should take in the future prevail. Such discourses can act as attractors that configure the organisation of Complex Adaptive Systems, such as food systems. The evolution of food systems seems to follow a cyclical pattern with occasional regime shifts, which can be driven by the system swapping attractors. In this study, alternative regimes and regime shift dynamics were illustrated for the Finnish food system facing pressures for sustainability transition. Two questions were asked. First, what could be the attractors capable for facilitating a regime shift and from where could they emerge? Second, how the regime shift could happen and what would be the role of animal production in the alternative regimes? Discourse analysis and systems science methodology were used in a participatory foresight process. Five prominent new basins of attraction were identified: ethics, environment, health, national food security and global market. All these manifested a specific conceptualisation of sustainability and resulted in radically different roles for animal production in the food system. Each of the new regimes was accompanied by some new landscape level pressures for change, emphasising the importance of holistic system analysis to avoid unintended or unexpected outcomes of sustainability transitions. Insights for the difficulty of planned regime shifts, use of Multi-Level Perspective (MLP) as an empirical mapping tool, and the utilisation of societal discourses as a source for new attractors were novel elements in the approach of this study.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 469-486"},"PeriodicalIF":10.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluating the environmental and financial performance of additive manufacturing at scale in the consumer goods industry","authors":"Noemie Midrez , Afreen Siddiqi , Gregoire Mercusot , Bruce Cameron","doi":"10.1016/j.spc.2024.11.013","DOIUrl":"10.1016/j.spc.2024.11.013","url":null,"abstract":"<div><div>As corporate sustainability commitments and environmental regulations intensify, additive manufacturing users must balance the technology's maturing economic value with its application- and process-dependent environmental impact. With limited methods to navigate this multi-dimensional variability at scale, additive manufacturing stakeholders face challenges when making growth and investment decisions. To bridge this gap, this study applies system modeling methodologies to a case study of an additive manufacturing service unit in the sporting goods industry aiming to improve its product portfolio's economic and environmental impacts and scale its capabilities. A tradespace model compares the value of additive manufacturing to injection molding across product characteristics and lifecycle decisions, and a flexible design analysis evaluates additive manufacturing scaling strategies, considering market and technology uncertainties. The tradespace analysis reveals that additive manufacturing reduces product environmental footprint by 95 % and unit cost by 93 % for 1-to-20-part production volumes compared to injection molding, while injection molding lowers environmental footprint by 72 % and unit cost by 56 % for 100-to-50,000-part production volumes compared to additive manufacturing. This analysis also suggests that additive manufacturing's economic and environmental value increases when located in geographies with low-carbon footprint energy and when manufacturing very low production quantities or small parts that maximize build capacity. The flexible design analysis indicates that expanding internal production capacity to a larger facility with renewable power, once higher demand is confirmed, can reduce part environmental footprint by up to 49 % and increase Net Present Value by more than 600 % compared to maintaining current operations that leverage external service bureaus. The results demonstrate the potential of these system modeling methodologies in integrating financial and environmental impact assessments at the company level for strategic scaling decisions. Future model developments are recommended to incorporate additive manufacturing's unique design impacts on the product lifecycle, more nuance in the impact analyses, and the social component of the technology's sustainability.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eugene Song , Myoung-Soung Lee , Jiyun Park , Hyemi Lee
{"title":"Translating pro-environmental intention to behavior: The role of moral licensing effect","authors":"Eugene Song , Myoung-Soung Lee , Jiyun Park , Hyemi Lee","doi":"10.1016/j.spc.2024.11.018","DOIUrl":"10.1016/j.spc.2024.11.018","url":null,"abstract":"<div><div>Despite an individual's altruistic intentions, these are not always put into practice. The gap between the intentions and behaviors hinders pro-environmental consumption behavior, which has been a highly important subject in the field. Considering that pro-environmental consumption is an altruistic behavior that adjusts and resolves the disparity between personal interests and social values, the role of moral licensing effect should get more attention in translating intention into behavior. However, existing studies failed to thoroughly examine the role of moral licensing effect. To address the gap in the literature, this study specifically attempted to investigate how the moral license effect influences when individual good intentions are linked to behavior. For this purpose, this study developed a novel behavioral model based on the Health Belief Model (HBM) and the Theory of Planned Behavior (TPB), while also examining the significance of the pathway through which pro-environmental behavioral intention influences actual behavior. This study conducted an online self-reported survey online and analyzed the data from 1000 participants. As a result, the level of moral licensing significantly moderated the association between pro-environmental behavioral intention and actual behavior. Participants with higher levels of moral licensing, indicating a greater tendency to rationalize unethical actions, showed a weaker translation of intention into action. It recommends developing differentiated communication strategies based on consumers' moral licensing levels, focusing on facilitating intention-to-action translation for high moral licensing individuals and reinforcing antecedents like perceived benefits for those with low moral licensing tendencies.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 527-540"},"PeriodicalIF":10.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meng Li , Yanan Wang , Shunan Zhao , Wei Chen , Yu Liu , Heran Zheng , Zhongxiao Sun , Pan He , Rui Li , Sun Zhang , Peixue Xing , Qiao Li
{"title":"Improving the affordability and reducing greenhouse gas emissions of the EAT-Lancet diet in China","authors":"Meng Li , Yanan Wang , Shunan Zhao , Wei Chen , Yu Liu , Heran Zheng , Zhongxiao Sun , Pan He , Rui Li , Sun Zhang , Peixue Xing , Qiao Li","doi":"10.1016/j.spc.2024.11.014","DOIUrl":"10.1016/j.spc.2024.11.014","url":null,"abstract":"<div><div>Transforming from existing dietary patterns to sustainable dietary patterns can promote sustainable development of the environment and human health. However, a successful transformation of dietary structure is hinges on the affordability of dietary guidelines. This study compares the actual dietary consumption structure of urban and rural residents in China with the recommended values outlined in dietary guidelines, and then measures the affordability of adhering to these guidelines for both urban and rural populations. This paper forecasts the future levels of dietary affordability and potential reduction in greenhouse gas (GHG) emissions in both urban and rural regions of China. The results indicate that there is a notable disparity between actual food consumption in urban and rural regions and that recommended by the dietary guidelines. The EAT-<em>Lancet</em> diet successfully achieves the objectives of being affordable, nutritionally sufficient, and environmentally sustainable, and can narrow the urban-rural affordability gap. By implementing a 13 % increase in incomes, the EAT-<em>Lancet</em> diet can effectively achieve universal affordability at the highest price and potentially reduce greenhouse gas emissions by 30.24 %.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 445-457"},"PeriodicalIF":10.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Food waste and the effects of waste reduction in China's catering industry","authors":"Yi Luo , Xue Qu , Fangfang Cao , Laping Wu","doi":"10.1016/j.spc.2024.11.017","DOIUrl":"10.1016/j.spc.2024.11.017","url":null,"abstract":"<div><div>Reducing food waste is crucial for combating hunger. With economic development and rising income levels, more Chinese people are dining out, which may lead to an increase in the amount of food wasted in the catering industry. However, efforts to reduce food waste are hindered by a lack of accurate data. On the basis of nationwide survey data from 1957 restaurants across China, we critically assessed food waste and its impacts on resources, the environment and ecology in China's catering industry. Moreover, we conducted scenario analysis to evaluate the effects of waste reduction with reference to the survey and the UN 2030 Sustainable Development Goals. We also used an econometric model to analyze macrofactors affecting food waste in China's catering industry. The results show that, food waste in China's catering industry averages 74.16 g per capita per meal, and that restaurants in the Northeast China, large-scale restaurants, and dinner restaurants are more likely to produce large amounts of food waste. The total amount of food waste in China's catering industry has reached 23.73 million tons of food, which is equal to 47.33 million tons (CO<sub>2</sub>e) of carbon footprint, 40.3 billion m<sup>3</sup> of water footprint, and 31.56 million hectares of ecological footprint. If the Sustainable Development Goal of halving food waste by 2030 is achieved, reducing food waste in China's catering industry could save 11.87 million tons of food, and reduce the carbon, water, and ecological footprints by 23.66 million tons (CO<sub>2</sub>e), 20.15 billion m<sup>3</sup>, and 15.78 million hectares, respectively. Econometric analysis revealed that the provincial macrofactors affecting food waste in China's catering industry are the gross domestic product (GDP), the average annual GDP growth rate, grain production, and the ratio of grain consumption to total food consumption. Strategies should be developed by the government and stakeholders to increase the community's awareness of food savings and conservation.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 541-551"},"PeriodicalIF":10.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Phyo Zaw Oo , Trakarn Prapaspongsa , Vladimir Strezov , Nazmul Huda , Kazuyuki Oshita , Masaki Takaoka , Jun Ren , Anthony Halog , Shabbir H. Gheewala
{"title":"The role of global waste management and circular economy towards carbon neutrality","authors":"Phyo Zaw Oo , Trakarn Prapaspongsa , Vladimir Strezov , Nazmul Huda , Kazuyuki Oshita , Masaki Takaoka , Jun Ren , Anthony Halog , Shabbir H. Gheewala","doi":"10.1016/j.spc.2024.11.021","DOIUrl":"10.1016/j.spc.2024.11.021","url":null,"abstract":"<div><div>Solid waste management is a cross-cutting issue that significantly influences multiple aspects of sustainable development globally. The waste sector is a major anthropogenic source of global greenhouse gas (GHG) emissions. Most global GHG assessments of waste management rely on generic data due to limitations in available data. This research used reflective inventory data for municipal solid waste (MSW) treatment systems related to the income levels of countries, resulting in more context-specific and comprehensive assessments of GHG emissions. This study aims to assess life cycle GHG emissions from the global MSW management sector for the years 2023, 2030, and 2050 and then analyses the global and regional waste management goals set by the United Nations Environment Programme (UNEP) and the European Union (EU) to identify hotspots in the MSW management systems and critical factors that influence GHG emissions from the waste sector. The study was conducted in accordance with the standards outlined in ISO 14067:2018. The results show that the average global GHG emissions from 1 tonne of MSW in 2023 based on the existing MSW management practices was approximately 89.7 kg CO<sub>2e</sub>. The major contributor was the open dumping of MSW, contributing almost 70 % of GHG emissions. The global MSW management sector emitted a total of 173.2 Mt CO<sub>2e</sub> GHG emissions in 2023. If no improvements are made to existing systems, GHG emissions from the waste sector are projected to increase to 203.4 Mt CO<sub>2e</sub> by 2030, and to 289.5 Mt CO<sub>2e</sub> by 2050. Achieving waste management goals can reduce GHG emissions by approximately 1 % to more than 160 %. The implementation of the circular economy in the waste sector has the potential to achieve net zero emissions from the global MSW management sector by 2030 and 2050. This study provides achievable MSW management targets for the world and highlights key factors to achieve carbon neutrality from the waste sector. Prioritising policies such as upgrading open dumps, standardising household-level waste separation procedures, minimising food waste, establishing national recycling targets, and promoting circular economy through a zero-waste approach could substantially reduce GHG emissions from the waste sector. These findings are important for the adoption of circular economy principles in MSW management systems to effectively support the pursuit of carbon neutrality goals.</div></div>","PeriodicalId":48619,"journal":{"name":"Sustainable Production and Consumption","volume":"52 ","pages":"Pages 498-510"},"PeriodicalIF":10.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}