Nature Cities最新文献

Urban noise pollution and learning in developing economies

Nature Cities Pub Date : 2025-01-23 DOI: 10.1038/s44284-024-00189-4

Arzi Adbi, Sumit Agarwal, Pulak Ghosh

引用次数: 0

Urban capacities and constraints

Nature Cities Pub Date : 2025-01-23 DOI: 10.1038/s44284-025-00198-x

引用次数: 0

Thoughtfully integrating autonomous taxis into urban mobility

Nature Cities Pub Date : 2025-01-23 DOI: 10.1038/s44284-024-00191-w

Hong Yang

引用次数: 0

Changsha tradition meets innovation

Nature Cities Pub Date : 2025-01-23 DOI: 10.1038/s44284-024-00190-x

Farrukh Baig

引用次数: 0

Decarbonizing urban residential communities with green hydrogen systems

Nature Cities Pub Date : 2025-01-02 DOI: 10.1038/s44284-024-00178-7

You Wu, Lexuan Zhong

{"title":"Decarbonizing urban residential communities with green hydrogen systems","authors":"You Wu, Lexuan Zhong","doi":"10.1038/s44284-024-00178-7","DOIUrl":"10.1038/s44284-024-00178-7","url":null,"abstract":"Community green hydrogen systems, typically consisting of rooftop photovoltaic panels paired with hybrid hydrogen-battery storage, offer urban environments with improved access to clean, on-site energy. However, economically viable pathways for deploying hydrogen storage within urban communities remain unclear. Here we develop a bottom-up energy model linking climate, human behavior and community characteristics to assess the impacts of pathways for deploying community green hydrogen systems in North America from 2030 to 2050. We show that for the same community conditions, the cost difference between the best and worst pathways can be as high as 60%. In particular, the household centralized option emerges as the preferred pathway for most communities. Furthermore, enhancing energy storage demands within these deployment pathways can reduce system design costs up to fourfold. To achieve cost-effective urban decarbonization, the study underscores the critical role of selecting the right deployment pathway and prioritizing the integration of increased energy storage in pathway designs. Distributed green hydrogen systems represent an emerging technology to help decarbonize cities, but the optimal path for expanding them in urban residential communities remains unclear. This study developed a bottom-up energy model to explore the impacts and implications of pathways for deploying green hydrogen energy systems for urban communities in North America.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 1","pages":"81-92"},"PeriodicalIF":0.0,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44284-024-00178-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121589","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

The decreasing housing utilization efficiency in China’s cities

Nature Cities Pub Date : 2025-01-02 DOI: 10.1038/s44284-024-00177-8

Lifeng Shi, Tobias Leichtle, Xianjin Huang, Michael Wurm, Hannes Taubenböck

{"title":"The decreasing housing utilization efficiency in China’s cities","authors":"Lifeng Shi, Tobias Leichtle, Xianjin Huang, Michael Wurm, Hannes Taubenböck","doi":"10.1038/s44284-024-00177-8","DOIUrl":"10.1038/s44284-024-00177-8","url":null,"abstract":"‘Ghost cities’ are a well-known phenomenon of (almost) complete vacancy of urban living space in China. Underutilization of urban living space, however, is far more common than complete vacancy. Here we propose the concept of housing utilization efficiency (HUE) and present the following findings: (1) the overall HUE in China’s highly urbanized areas decreased from 84% in 2010 to 78% in 2020, (2) the HUE in central, old urban areas was generally lower than that in the outer layers of urban areas and declined more from 2010 to 2020 and (3) four development types are found to represent different patterns of urban population movement, urban housing growth and HUE change at the intraurban level. These findings provide comprehensive insight into the discrepancies between urban housing supply and demand in China and highlight their connections to the country’s particular urbanization characteristics and policies, which are crucial for future housing development and planning. This study proposes a new concept, housing utilization efficiency (HUE), to assess urban housing supply and demand. It found that the overall HUE in China has decreased since 2010, coupled with an over-supply of housing in most cities and processes of depopulation in others.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 1","pages":"70-80"},"PeriodicalIF":0.0,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44284-024-00177-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121539","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

Urban inequality, the housing crisis and deteriorating water access in US cities 美国城市中的不平等、住房危机和日益恶化的用水状况

Nature Cities Pub Date : 2024-12-19 DOI: 10.1038/s44284-024-00180-z

Katie Meehan, Jason R. Jurjevich, Lucy Everitt, Nicholas M.J.W. Chun, Justin Sherrill

{"title":"Urban inequality, the housing crisis and deteriorating water access in US cities","authors":"Katie Meehan, Jason R. Jurjevich, Lucy Everitt, Nicholas M.J.W. Chun, Justin Sherrill","doi":"10.1038/s44284-024-00180-z","DOIUrl":"10.1038/s44284-024-00180-z","url":null,"abstract":"The housing unaffordability and cost-of-living crisis is affecting millions of people in US cities, yet the implications for urban dwellers’ well-being and social reproduction remain less clear. This Article presents a longitudinal analysis of household access to running water—a vital component of social infrastructure—in the 50 largest US cities since 1970. The results indicate that water access has worsened in an increasing number and typology of US cities since the 2008 global financial crash, disproportionately affecting households of color in 12 of the 15 largest cities. We provide evidence to suggest that a ‘reproductive squeeze’—systemic, compounding pressures on households’ capacity to reproduce themselves on a daily and societal basis—is forcing urban households into more precarious living arrangements, including housing without running water. We analyze the case study of Portland (Oregon) to illustrate the racialized nature of the reproductive squeeze under a housing crisis. Our insights reveal that plumbing poverty—a lack of household running water—is expanding in scope and severity to a broader array of US cities, raising doubts about equitable progress towards Sustainable Development Goals for clean water and sanitation for all (SDG 6) and sustainable cities (SDG 11) in an increasingly urbanized United States. Meehan and colleagues study access to running water in large US cities since 1970, finding that the 2008 financial crisis worsened household ‘plumbing poverty’ in many cities. This disproportionately impacted households of color and generally squeezed lower-income households into more precarious living situations.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 1","pages":"93-103"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44284-024-00180-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121604","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

Response and sensitivity of urban plants with different seed dispersal modes 不同种子传播方式的城市植物的反应和敏感性

Nature Cities Pub Date : 2024-12-11 DOI: 10.1038/s44284-024-00169-8

Zhiwen Gao, Yingji Pan, Kun Song, Yanyi Yang, Mingming Zhuge, Tian Wu, Tiyuan Xia, Yuandong Hu, Liangjun Da, Ellen Cieraad

{"title":"Response and sensitivity of urban plants with different seed dispersal modes","authors":"Zhiwen Gao, Yingji Pan, Kun Song, Yanyi Yang, Mingming Zhuge, Tian Wu, Tiyuan Xia, Yuandong Hu, Liangjun Da, Ellen Cieraad","doi":"10.1038/s44284-024-00169-8","DOIUrl":"10.1038/s44284-024-00169-8","url":null,"abstract":"Spontaneous plants, those not planted by people or remaining from before urbanization, are vital to urban biodiversity. Their distribution in urban systems is affected by seed dispersal mode and environmental factors such as natural dispersal limitation and habitat quality factors. We assessed four seed dispersal modes in 16 cities in Yunnan province, the most biodiverse province in China. Autochory, in which plants eject seeds or otherwise power their seeds’ dispersal, was the dominant seed dispersal mode of urban spontaneous plants in most cities (13 out of 16), whereas hydrochory, or passive seed dispersal by water, was the least frequent. Our research showed spontaneous plants in urban ecosystems adopt convergent strategies to address environmental stressors. The number of urban plants was significantly higher in colder and more-humid climates but decreased with increased dispersal limitations and reduced habitat quality. Sensitivities to these factors varied, with autochory especially sensitive to dispersal limitation and hydrochory sensitive to habitat quality and climate. Findings suggest improving habitat quality and creating green corridors would enhance conservation efforts for urban biodiversity. Plants are vital to healthy cities, yet urban environments filter the plant traits we find. This study assesses the relative dominance of different seed dispersal modes among plants that establish in cities without human intent, finding that many disperse their own seeds and that seed dispersal by water is less common.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 1","pages":"28-37"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Domestic migration and city rank dynamics

Nature Cities Pub Date : 2024-12-10 DOI: 10.1038/s44284-024-00170-1

Sandro M. Reia, P. Suresh C. Rao, Marc Barthelemy, Satish V. Ukkusuri

引用次数: 0

Cities incorporate equity in their climate policies but overlook procedural justice in decision-making 城市将公平纳入气候政策，却忽视了决策中的程序正义

Nature Cities Pub Date : 2024-12-09 DOI: 10.1038/s44284-024-00167-w

Mahir Yazar, Håvard Haarstad, Johan Elfving

{"title":"Cities incorporate equity in their climate policies but overlook procedural justice in decision-making","authors":"Mahir Yazar, Håvard Haarstad, Johan Elfving","doi":"10.1038/s44284-024-00167-w","DOIUrl":"10.1038/s44284-024-00167-w","url":null,"abstract":"Increasingly, urban scholars and decision-makers are emphasizing the integration of justice into urban policy. Yet, there is limited research on if or how cities incorporate procedural justice (fairness, equality and inclusion) in urban governance. Here, we demonstrate that less than half of the C40 cities with climate action plans lean toward including procedural justice in policy choices and the related measures. We find that cities adopting the C40-driven equity pledge, those joining the C40 later and cities in the Global South positively correlate with the integration of procedural justice. Cities that substantially engage in procedural justice demonstrate fairness in decision-making processes through visible collaboration and clear plans. In contrast, cities lacking engagement with procedural justice focus primarily on the fairness of outcomes without addressing deeper systemic issues or involving marginalized groups, leading to what we label as tokenistic modes of participation. Cities must move beyond normative policy prescription and instead use concrete organizational tools to circumvent historical legacies of injustice. Yazar and coauthors investigate the incorporation of procedural justice—fair and inclusive decision-making processes—among the climate-ambitious cities in the C40 network. They find that less than half of C40 cities emphasize procedural justice in climate planning, thereby limiting their ability to meaningfully address systemic inequality.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 1","pages":"17-27"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0