npj urban sustainability最新文献_第7页

Urban metabolic flow in China’s megacities doubled by material stock accumulation since the 21st century 21 世纪以来，中国特大城市的城市代谢流量因物质存量积累而翻了一番

npj urban sustainability Pub Date : 2023-10-19 DOI: 10.1038/s42949-023-00132-x

Chenling Fu, Tianjie Deng, Yan Zhang

{"title":"Urban metabolic flow in China’s megacities doubled by material stock accumulation since the 21st century","authors":"Chenling Fu, Tianjie Deng, Yan Zhang","doi":"10.1038/s42949-023-00132-x","DOIUrl":"10.1038/s42949-023-00132-x","url":null,"abstract":"Buildings, infrastructure, and durable goods play a critical role in urbanization, akin to bones and muscles that structure the human body. These stocks contribute to the exploitation of over half of the world’s resources and offer potential “urban mining” sources. However, the process of resource transformation regarding urban material stock growth and material flow alteration remains unclear. The metaphor of urban metabolism provides a new perspective to dissect this process, but current studies often spotlight only specific fragments, such as certain end-use types or materials. This study bridges this gap by establishing a comprehensive level-to-level analysis of urban “bone-muscle” metabolism in China’s megacities. This study presents a comprehensive analysis of urban metabolism in China’s megacities, tracking the lifecycle of material stock across over a hundred distinct end-use types and 12 categories of materials. Results indicate that annual metabolic flow in these cities has doubled since the early 21st century, reaching 264–737 Mt in 2018, with manufacturing, construction, and transportation as primary drivers. As accumulation intensifies, the material stock’s growth rate diminishes logarithmically, hinting at increased efficiency and a move towards a steady state. Concurrently, scrap flow is on the rise. Driven by population growth, per capita scrap is projected to reach 2.0–4.7 t/cap by 2035, and material stock is expected to rise 1.4–2 fold. Proactive population planning and coordinated development strategies can mitigate the risks associated with this growth and maintain urban system stability.","PeriodicalId":74322,"journal":{"name":"npj urban sustainability","volume":" ","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s42949-023-00132-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135730306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Covid, cities, and sustainability: a reflection on the legacy of a global pandemic Covid、城市和可持续性：对全球大流行病遗留问题的思考

npj urban sustainability Pub Date : 2023-09-29 DOI: 10.1038/s42949-023-00130-z

Peter Newman

引用次数: 0

U.S. cities’ integration and evaluation of equity considerations into climate action plans 美国城市将公平因素纳入气候行动计划并对其进行评估

npj urban sustainability Pub Date : 2023-09-13 DOI: 10.1038/s42949-023-00129-6

Holly Caggiano, Diren Kocakuşak, Pranay Kumar, Melissa O. Tier

引用次数: 0

Measuring sustainable urban development in residential areas of the 20 biggest Finnish cities 衡量芬兰20个最大城市住宅区的可持续城市发展

npj urban sustainability Pub Date : 2023-08-21 DOI: 10.1038/s42949-023-00127-8

Sanna Ala-Mantila, Antti Kurvinen, Aleksi Karhula

引用次数: 0

A link criticality approach for pedestrian network design to promote walking 促进步行的步行网络设计的链接临界性方法

npj urban sustainability Pub Date : 2023-08-19 DOI: 10.1038/s42949-023-00114-z

Rajat Verma, Satish V. Ukkusuri

{"title":"A link criticality approach for pedestrian network design to promote walking","authors":"Rajat Verma, Satish V. Ukkusuri","doi":"10.1038/s42949-023-00114-z","DOIUrl":"10.1038/s42949-023-00114-z","url":null,"abstract":"Measures of walkability generally do not provide a detailed quantitative assessment of pedestrian infrastructure development prioritization. In this study, a link-based composite measure of walkability and walking is introduced to overcome this limitation. This measure, called ‘pednet score’, is based on a weighted pedestrian network (‘pednet’) made of sidewalks and crosswalks whose edge weights are descriptive of their popularity. Edge popularity is derived from home-based walk trip assignments derived from simulated pedestrian demand. Properties of the pednet score are studied using three hypothetical variants of the pednet in three North American cities, each involving the addition of candidate sidewalk and/or crosswalk segments. It is shown that a strategic selection of these segments based on pednet score can substantially increase walking trips, in some cases up to 236%, and reduce current mean pedestrian trip distances by up to 340 m. A mixed development approach involving both sidewalks and crosswalks also shows considerably higher improvement than those segments considered alone. Results from marginal benefit curves strongly indicate the utility of the pednet score as a measure of link criticality for segment prioritization in pedestrian network design.","PeriodicalId":74322,"journal":{"name":"npj urban sustainability","volume":" ","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s42949-023-00114-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41878864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luxury and legacy effects on urban biodiversity, vegetation cover and ecosystem services 奢侈品和遗产对城市生物多样性、植被覆盖和生态系统服务的影响

npj urban sustainability Pub Date : 2023-08-16 DOI: 10.1038/s42949-023-00128-7

Celina Aznarez, Jens-Christian Svenning, Juan Pablo Pacheco, Frederik Have Kallesøe, Francesc Baró, Unai Pascual

{"title":"Luxury and legacy effects on urban biodiversity, vegetation cover and ecosystem services","authors":"Celina Aznarez, Jens-Christian Svenning, Juan Pablo Pacheco, Frederik Have Kallesøe, Francesc Baró, Unai Pascual","doi":"10.1038/s42949-023-00128-7","DOIUrl":"10.1038/s42949-023-00128-7","url":null,"abstract":"Socio-economic and historical drivers shape urban nature distribution and characteristics, as luxury (wealth-related) and legacy (historical management) effects. Using remote sensing and census data on biodiversity and socio-economic indicators, we examined these effects on urban biodiversity and vegetation cover in Vitoria-Gasteiz (Basque Country). We also tested the luxury and legacy hypotheses on regulating ecosystem services (ES) and explored predictor interactions. Higher educational attainment positively correlated with urban biodiversity, confirming the luxury effect, but had no effect on vegetation cover or ES. Older areas had higher vegetation cover and ES evidencing a legacy effect with an inverse response on biodiversity, attributable to more recent management strategies promoting biodiversity in green spaces. Habitat quality amplified the luxury effect, while population density strengthened the legacy effect. Our results suggest that urban biodiversity is mainly driven by socio-economic factors, while vegetation cover and ES are influenced by management legacies in interaction with population density.","PeriodicalId":74322,"journal":{"name":"npj urban sustainability","volume":" ","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s42949-023-00128-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46157477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transforming planning and policy making processes at the intersections of climate, equity, and decolonization challenges 在气候、公平和非殖民化挑战的交叉点转变规划和政策制定过程

npj urban sustainability Pub Date : 2023-08-03 DOI: 10.1038/s42949-023-00126-9

Lindsay Cole, Maggie Low

引用次数: 0

Urbanity: automated modelling and analysis of multidimensional networks in cities 城市化：城市多维网络的自动化建模和分析

npj urban sustainability Pub Date : 2023-07-25 DOI: 10.1038/s42949-023-00125-w

Winston Yap, Rudi Stouffs, Filip Biljecki

{"title":"Urbanity: automated modelling and analysis of multidimensional networks in cities","authors":"Winston Yap, Rudi Stouffs, Filip Biljecki","doi":"10.1038/s42949-023-00125-w","DOIUrl":"10.1038/s42949-023-00125-w","url":null,"abstract":"Urban networks play a vital role in connecting multiple urban components and developing our understanding of cities and urban systems. Despite the significant progress we have made in understanding how city networks are connected and spread out, we still have a lot to learn about the meaning and context of these networks. The increasing availability of open data offers opportunities to supplement urban networks with specific location information and create more expressive urban machine-learning models. In this work, we introduce Urbanity, a network-based Python package to automate the construction of feature-rich urban networks anywhere and at any geographical scale. We discuss data sources, the features of our software, and a set of data representing the networks of five major cities around the world. We also test the usefulness of added context in our networks by classifying different types of connections within a single network. Our findings extend accumulated knowledge about how spaces and flows within city networks work, and affirm the importance of contextual features for analyzing city networks.","PeriodicalId":74322,"journal":{"name":"npj urban sustainability","volume":" ","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s42949-023-00125-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46008046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the potential connection between place capital and health capital in the post COVID-19 city 探索新冠肺炎后城市地方资本与卫生资本之间的潜在联系

npj urban sustainability Pub Date : 2023-07-21 DOI: 10.1038/s42949-023-00124-x

Kate Meyrick, Peter Newman

{"title":"Exploring the potential connection between place capital and health capital in the post COVID-19 city","authors":"Kate Meyrick, Peter Newman","doi":"10.1038/s42949-023-00124-x","DOIUrl":"10.1038/s42949-023-00124-x","url":null,"abstract":"Great places have the potential to create enhanced health outcomes and improve quality of life. The positive connection between the built environment and the social determinants of health is well documented as is the role of the built environment in establishing place quality and sense of place. However, the relationship between the concepts of place capital and health capital is less understood and specifically the extent to which high levels of place capital confer a protective and restorative health benefit across the whole of life. COVID-19 changed our appreciation of the role that both health and place play in supporting our quality and way of life and has revealed the negative impact on wellness and wellbeing that arises when our connection to place is fractured. To contribute to the debate surrounding the post-COVID-19 city, this paper explores the intrinsic connection between place and health; it proposes a conceptual model that positions place capital as a tool for enhancing whole of life health capital at a neighbourhood scale. The Framework for measuring this place capital is created from traditional place literature and the new place context literature on the need to be inclusive, equitable and sustainable. It suggests that by building great places that are based on these measurable factors, there can be a reduction in the growth of medical spending and burden of disease over time.","PeriodicalId":74322,"journal":{"name":"npj urban sustainability","volume":" ","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s42949-023-00124-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43501975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart cities and the urban digital divide 智慧城市和城市数字鸿沟

npj urban sustainability Pub Date : 2023-07-13 DOI: 10.1038/s42949-023-00117-w

Andrea Caragliu, Chiara F. Del Bo

引用次数: 0