Nature Cities最新文献_第2页

Comparative analysis of smart city scientific research trends in the USA and China 中美智慧城市科研趋势对比分析

Nature Cities Pub Date : 2025-08-25 DOI: 10.1038/s44284-025-00305-y

Yuan Lai, Haoxiang Zhao

{"title":"Comparative analysis of smart city scientific research trends in the USA and China","authors":"Yuan Lai, Haoxiang Zhao","doi":"10.1038/s44284-025-00305-y","DOIUrl":"10.1038/s44284-025-00305-y","url":null,"abstract":"The integrated concept of ‘smart cities’ has emerged as a key focus of contemporary research, yet efforts remain fragmented, split between technology-driven and human-centered approaches. Here we leverage open data and large language models to analyze smart city research proposals funded by the National Science Foundation in the USA and the National Natural Science Foundation of China. Our findings reveal common scientific inquiries alongside divergent research trajectories shaped by national contexts, exposing a persistent tension between techno-centric priorities and human-oriented imperatives. This comparative analysis of two leading global economies provides insights into the evolution of smart city research, highlighting both shared challenges and distinct pathways. Our results reveal common ground, divergent national priorities and funding mechanisms that risk dividing the field further. Smart city research remains fragmented between technology-driven and human-centered approaches, despite growing interest. This analysis of research proposals from the USA and China reveals common ground, divergent priorities and funding mechanisms that risk dividing the field further.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 9","pages":"875-883"},"PeriodicalIF":0.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123463","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

Author Correction: A generalized relationship between dose of greenness and mental health response 作者更正：绿色剂量与心理健康反应之间的广义关系

Nature Cities Pub Date : 2025-08-22 DOI: 10.1038/s44284-025-00325-8

Bin Jiang, Jiali Li, Peng Gong, Chris Webster, Gunter Schumann, Xueming Liu, Pongsakorn Suppakittpaisarn

引用次数: 0

Order and chaos in urban life 城市生活中的秩序与混乱

Nature Cities Pub Date : 2025-08-18 DOI: 10.1038/s44284-025-00252-8

Yin Long

引用次数: 0

Green dose to resilient and equitable urban health 绿色剂量促进有弹性和公平的城市卫生

Nature Cities Pub Date : 2025-08-18 DOI: 10.1038/s44284-025-00306-x

引用次数: 0

Urban gas infrastructure meets hydrogen ambitions 城市燃气基础设施满足氢能源的雄心

Nature Cities Pub Date : 2025-08-15 DOI: 10.1038/s44284-025-00308-9

Hongfang Lu

引用次数: 0

Environmental burden and health inequity in China’s road-based express delivery 中国公路快递的环境负担和健康不平等

Nature Cities Pub Date : 2025-08-15 DOI: 10.1038/s44284-025-00300-3

Baojie Li, Hong Liao, Ke Li, Jintai Lin, Cheng Gong, Huan Liu, Yan Li, Lei Chen, Yang Yang, Xipeng Jin, Yongqi Zhao, Teng Wang, Jianbing Jin, Ruijun Dang, Daniel J. Jacob

{"title":"Environmental burden and health inequity in China’s road-based express delivery","authors":"Baojie Li, Hong Liao, Ke Li, Jintai Lin, Cheng Gong, Huan Liu, Yan Li, Lei Chen, Yang Yang, Xipeng Jin, Yongqi Zhao, Teng Wang, Jianbing Jin, Ruijun Dang, Daniel J. Jacob","doi":"10.1038/s44284-025-00300-3","DOIUrl":"10.1038/s44284-025-00300-3","url":null,"abstract":"Urban e-commerce growth has driven unprecedented expansion in express delivery services, yet their cross-regional environmental and health consequences remain poorly understood. Here we present a novel spatially explicit assessment of emissions and their environmental burden in China’s express delivery sector by integrating large-scale shipping records, geospatial modeling and atmospheric chemical transport models. In 2021, express delivery transportation emitted 23.9-Mt CO2-equivalent and 166.4-kt atmospheric pollutant equivalents, creating substantial environmental inequality. These emissions and associated health impacts disproportionately affect key transit regions connecting major urban agglomerations, which handled only 12.7% of parcels but accounted for 37.3% of the total emissions, with 75.2% of their air-pollution-related premature deaths from other regions’ delivery activities. Express-delivery-related pollution caused 5,100 premature deaths in 2021, yet implementing synergistic mitigation strategies could prevent over 256,000 cumulative premature deaths by 2050, underscoring the need for sustainable logistics that balance urban convenience with environmental externalities. China’s rapid e-commerce growth has driven a 12-fold surge in express delivery, yet cross-regional emissions and health impacts remain poorly quantified. Road transport emitted 23.9-Mt CO2-equivalent and caused approximately 5,100 premature deaths in 2021, revealing stark transit-region health inequities and guiding sustainable logistics pathways.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 9","pages":"825-834"},"PeriodicalIF":0.0,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123417","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 meteorology–chemistry coupling in compound heat–ozone extremes 复合热-臭氧极值的城市气象-化学耦合

Nature Cities Pub Date : 2025-08-15 DOI: 10.1038/s44284-025-00302-1

Xueyu Zhou, Mengmeng Li, Xin Huang, Tengyu Liu, Haoran Zhang, Ximeng Qi, Zilin Wang, Yue Qin, Guannan Geng, Jiaping Wang, Xuguang Chi, Aijun Ding

{"title":"Urban meteorology–chemistry coupling in compound heat–ozone extremes","authors":"Xueyu Zhou, Mengmeng Li, Xin Huang, Tengyu Liu, Haoran Zhang, Ximeng Qi, Zilin Wang, Yue Qin, Guannan Geng, Jiaping Wang, Xuguang Chi, Aijun Ding","doi":"10.1038/s44284-025-00302-1","DOIUrl":"10.1038/s44284-025-00302-1","url":null,"abstract":"Heatwaves and ozone (O3) pollution threaten human and ecosystem health, with their compounding effects particularly severe in cities. While ground-based observations are indicative of urban O3 pollution during heatwaves, limited vertical insights into the intensified and prolonged O3 pollution hinder a comprehensive understanding of the underlying mechanisms and mitigation strategies. Here, leveraging airship vertical measurements and meteorology–chemistry coupled modeling, we reveal that heatwave-reinforced turbulence redistributes precursors vertically, altering photochemical stratification and accelerating O3 production both at the surface and aloft over megacities in China. Stringent emission controls targeting nitrogen oxides could mitigate the heatwave-exacerbated O3 extremes by narrowing the vertical disparity of photochemical sensitivity. Although heatwaves are projected to intensify, emission reductions due to China’s carbon neutrality pledge could alleviate urban O3 pollution by 41–47% during heatwaves and help tackle the dual challenges of air pollution and global warming while enhancing the climate resilience of city clusters. Heatwaves and ozone pollution pose compounded risks to urban health, but limited vertical insights have hindered understanding of their interaction. Using airship observations and model simulations, this study reveals that heatwaves worsen urban ozone pollution by vertically redistributing precursors, while emission reductions could mitigate heat–ozone extremes in a warming climate.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 9","pages":"847-856"},"PeriodicalIF":0.0,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s44284-025-00302-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123462","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

Partial flood defenses shift risks and amplify inequality in a core–periphery city 部分防洪转移了风险，扩大了核心边缘城市的不平等

Nature Cities Pub Date : 2025-08-15 DOI: 10.1038/s44284-025-00299-7

Ashish S. Kumar, Rajarshi Majumder, Vivek P. Kapadia, Udit Bhatia

{"title":"Partial flood defenses shift risks and amplify inequality in a core–periphery city","authors":"Ashish S. Kumar, Rajarshi Majumder, Vivek P. Kapadia, Udit Bhatia","doi":"10.1038/s44284-025-00299-7","DOIUrl":"10.1038/s44284-025-00299-7","url":null,"abstract":"Cities worldwide often rely on partial structural defenses to mitigate intensifying flood hazards. Although large-scale analyses suggest that partial levee coverage can reduce overall damage, its spatiotemporal effects remain understudied, particularly in cities of the Global South. Using a hydrodynamic model forced by extreme discharges (100-year return period flood event), along with depth–damage curves and demographic data, we find that partial levee construction in Surat, India, lowers citywide flood losses by ₹31.24 billion (US$380 million) in core urban wards and by ₹10.34 billion (US$125 million) in suburban neighborhoods. However, both damage and exposure become more inequitable, with the Gini index (0 = perfect equality, 1 = maximum inequality) rising by 20% for damage (0.55 to 0.66) and by about 26% for exposure (0.31 to 0.39). We introduced flood stripes and a protection-induced time shift to capture both spatial and temporal changes, finding that certain near-river wards can remain flood-free for up to 12 hours longer, whereas some downstream areas flood up to 7 hours earlier under partial levee coverage. These findings underscore the need for integrated strategies that address both dimensions of partial flood protection, ensuring that benefits for some do not escalate vulnerabilities for others. Partial flood defenses in Surat, India, reduce citywide flood losses but worsen inequality, with vulnerable areas facing deeper flooding. This study shows how constrained urban flood adaptation can redistribute rather than eliminate risk.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"2 9","pages":"835-846"},"PeriodicalIF":0.0,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123461","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

Invisible groundwater threats to coastal urban infrastructure 地下水对沿海城市基础设施的无形威胁

Nature Cities Pub Date : 2025-08-06 DOI: 10.1038/s44284-025-00298-8

Barret L. Kurylyk, Christopher J. Russoniello, Julia A. Guimond, Shellie Habel, Holly A. Michael, Michael C. Sukop, Alicia M. Wilson

引用次数: 0

Building urban fire resilience to enhance national security 建设城市火灾韧性，增强国家安全

Nature Cities Pub Date : 2025-08-04 DOI: 10.1038/s44284-025-00296-w

Amir AghaKouchak, Annika Hjelmstad, Jonathan Lucy, Jesse Duku, Nitheshnirmal Sadhasivam, Susanna Werth, Salih Babagiray, Debora Yumi de Oliveira, Azara Boschee, Mojtaba Sadegh, Farshid Vahedifard, John T. Abatzoglou, Marco Turco, Mikiztli S. Ortiz, Manoochehr Shirzaei, Parham Azimi, Lauren Ferguson, Joseph G. Allen

引用次数: 0