Nature Cities最新文献_第3页

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

Farrukh Baig

引用次数: 0

Smart cities: the data to decisions process

Nature Cities Pub Date : 2025-01-20 DOI: 10.1038/s44284-024-00194-7

Eve Tsybina, Viswadeep Lebakula, Fengxiu Zhang, Qian Hu, Kathryn B. Laskey

{"title":"Smart cities: the data to decisions process","authors":"Eve Tsybina, Viswadeep Lebakula, Fengxiu Zhang, Qian Hu, Kathryn B. Laskey","doi":"10.1038/s44284-024-00194-7","DOIUrl":"10.1038/s44284-024-00194-7","url":null,"abstract":"Smart cities improve citizen services by converting data into data-driven decisions. This conversion is not coincidental and depends on the underlying movement of information through four layers: devices, data communication and handling, operations, and planning and economics. Here we examine how this flow of information enables smartness in five major infrastructure sectors: transportation, energy, health, governance and municipal utilities. We show how success or failure within and between layers results in disparities in city smartness across different regions and sectors. Regions such as Europe and Asia exhibit higher levels of smartness compared to Africa and the USA. Furthermore, within one region, such as the USA or the Middle East, smarter cities manage the flow of information more efficiently. Sectors such as transportation and municipal utilities, characterized by extensive data, strong analytics and efficient information flow, tend to be smarter than healthcare and energy. The flow of information, however, generates risks associated with data collection and artificial intelligence deployment at each layer. We underscore the importance of seamless data transformation in achieving cost-effective and sustainable urban improvements and identify both supportive and impeding factors in the journey towards smarter cities. Using five infrastructure sectors (transportation, energy, health, utilities and governance), this Review pays attention to the mechanisms through which smart dimensions of cities operate in terms of how information flows from the device to the decision.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 2","pages":"135-143"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555256","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

Linking smart cities and SDGs through descriptive analysis of US municipalities

Nature Cities Pub Date : 2025-01-17 DOI: 10.1038/s44284-024-00192-9

Meng Cai, Travis Decaminada, Yingjie Li, Noah J. Durst, Eva Kassens-Noor, Mark Wilson

引用次数: 0

Lessons from complex networks to smart cities

Nature Cities Pub Date : 2025-01-17 DOI: 10.1038/s44284-024-00188-5

Guido Caldarelli, Leonardo Chiesi, Gherardo Chirici, Bianca Galmarini, Stefano Mancuso, Jacopo Moi, Manlio De Domenico

引用次数: 0

Planning for the complexity and uncertainty of urban socio-environmental futures 针对城市社会环境未来的复杂性和不确定性进行规划

Nature Cities Pub Date : 2025-01-17 DOI: 10.1038/s44284-024-00195-6

Daniel A. Shtob, Jordan Fox, Patrick Trent Greiner

引用次数: 0

Exacerbated heat stress induced by urban browning in the Global South

Nature Cities Pub Date : 2025-01-06 DOI: 10.1038/s44284-024-00184-9

Huilin Du, Wenfeng Zhan, Bingbing Zhou, Yang Ju, Zihan Liu, Ariane Middel, Kangning Huang, Lei Zhao, TC Chakraborty, Zhihua Wang, Shasha Wang, Jiufeng Li, Long Li, Fan Huang, Yingying Ji, Xuecao Li, Manchun Li

{"title":"Exacerbated heat stress induced by urban browning in the Global South","authors":"Huilin Du, Wenfeng Zhan, Bingbing Zhou, Yang Ju, Zihan Liu, Ariane Middel, Kangning Huang, Lei Zhao, TC Chakraborty, Zhihua Wang, Shasha Wang, Jiufeng Li, Long Li, Fan Huang, Yingying Ji, Xuecao Li, Manchun Li","doi":"10.1038/s44284-024-00184-9","DOIUrl":"10.1038/s44284-024-00184-9","url":null,"abstract":"Cities in the Global South face dual pressures from intensifying heat stress and widespread urban browning. However, the specific trends in urban heat stress across these cities, alongside those induced by urban browning, remain inadequately quantified, hampering effective urban planning and intervention strategies. Here we present a data-driven methodology to generate high-resolution (1 km) summertime Heat Index (HI) maps for over 2,300 Global South cities (2003–2020). This dataset recalibrates HI-based warming rates, revealing a mean trend (KHI) of 0.41 ± 0.01 °C per decade (mean ± standard error) across these cities. Urban browning exacerbates heat stress significantly, with KHI increases surpassing 0.05 °C per decade in cities such as those in Nigeria, contrasting starkly with greening-induced cooling observed in many Global North cities. Our analysis pinpoints cities in dire need of intervention, such as those in Botswana and Côte d’Ivoire facing browning-driven HI increases without commensurate economic growth. Contrastingly, Chinese and Indian cities exhibit a paradoxical cooling trend, potentially linked to greening initiatives amid economic development. Our findings highlight key action imperatives for South–South knowledge exchange to develop targeted governance strategies for achieving urban sustainability. This study measured urban moist heating rates in more than 2,300 cities in the Global South between 2003 and 2020 with a new dataset. It found an increase in urban moist heat of 0.41 ± 0.01 °C per decade, exacerbated by urban browning by 0.05 °C per decade in cities such as those in Nigeria.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 2","pages":"157-169"},"PeriodicalIF":0.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555226","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

Urban growth strategy in Greater Sydney leads to unintended social and environmental challenges

Nature Cities Pub Date : 2025-01-03 DOI: 10.1038/s44284-024-00187-6

Juan Pablo Ríos-Ocampo, Michael Shayne Gary

{"title":"Urban growth strategy in Greater Sydney leads to unintended social and environmental challenges","authors":"Juan Pablo Ríos-Ocampo, Michael Shayne Gary","doi":"10.1038/s44284-024-00187-6","DOIUrl":"10.1038/s44284-024-00187-6","url":null,"abstract":"Cities have advanced in terms of economic and social status over the past five decades, improving the living conditions of hundreds of millions of people. However, population growth and urban expansion have put pressure on social and environmental conditions. This study examines urban policymakers’ perceptions about causal relationships in the urban system as revealed in urban planning reports. Here we analyzed 500 pages from published urban plans of Greater Sydney between 1968 and 2018 and coded the text into causal maps. The findings show that policymakers adopted a dominant urban development strategy over the past 50 years to pursue economic and public infrastructure growth. Over time, this growth strategy resulted in a number of social and environmental challenges that negatively impacted societal well-being. Although policymakers eventually recognized the seriousness of social and environmental challenges, they never attempted to fundamentally change the dominant growth strategy. Instead, policymakers sought to address the challenges (that is, symptoms) by responding to each issue piecemeal. This study codes about 500 pages from three urban development plans for the Greater Sydney area between 1968 and 2018 using causal maps. It found that there were unintended social and environmental consequences from the sustained economic growth strategy in the plans, and although there were attempts to solve them, there were never plans to change the dominant growth strategy.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 3","pages":"223-233"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44284-024-00187-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668415","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

Intercity personnel exchange is more effective than policy transplantation at reducing water pollution 在减少水污染方面，城际人员交流比政策移植更有效

Nature Cities Pub Date : 2025-01-02 DOI: 10.1038/s44284-024-00181-y

Ziliang Liu, Shengjun Zhu, Canfei He

{"title":"Intercity personnel exchange is more effective than policy transplantation at reducing water pollution","authors":"Ziliang Liu, Shengjun Zhu, Canfei He","doi":"10.1038/s44284-024-00181-y","DOIUrl":"10.1038/s44284-024-00181-y","url":null,"abstract":"Severe spatial disparities exist in water pollution and water governance. A popular solution is that lagging cities transplant policies from cities with successful experiences. However, environmental governance is more than policies. Merely copying policies from elsewhere may not generate intended effects. Here this research argues that intercity personnel exchange can be a more effective policy instrument than policy transplantation. We provide the first nationwide estimates in China of the effect of intercity exchange of city leaders on water pollution reduction. Using large-scale micro-level datasets on city leaders’ curriculum vitae, firm behaviors, patents and policy texts, we show that intercity exchange of city leaders leads to a 4.78–15.26% reduction in firm-level water pollution, which contributes to 39.45–57.98% of the national total water pollution reduction from 2006 to 2013. Exchanged city leaders facilitate the diffusion of governance experience across cities and the formulation of intercity cooperation. They are also more likely to initiate new policies to support industrial upgrading. Our findings highlight the importance and potential of intercity personnel exchange as a policy instrument for water governance in particular and green transition in general. Liu and colleagues demonstrate that exchanging personnel between cities is more effective at reducing firm-level water pollution than copying policies from one place to apply them elsewhere. The findings highlight the promise of intercity personnel exchange for improved water governance.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 3","pages":"210-222"},"PeriodicalIF":0.0,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44284-024-00181-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668454","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 residents mitigate heat exposure through increased use of food-delivery services

Nature Cities Pub Date : 2025-01-02 DOI: 10.1038/s44284-024-00193-8

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