Nature Cities最新文献_第6页

Intercity inequality in carbon emission reductions from vehicle electrification in China 中国汽车电气化碳减排的城际不平等

IF 15.3

Nature Cities Pub Date : 2026-06-24 DOI: 10.1038/s44284-026-00465-5

Jianing Liu, Longfei Zheng, Huibin Du, Zizheng Liu, Peng Zhang, Fenjie Long, Pengjun Zhao, Priti Parikh, Zhifu Mi

{"title":"Intercity inequality in carbon emission reductions from vehicle electrification in China","authors":"Jianing Liu, Longfei Zheng, Huibin Du, Zizheng Liu, Peng Zhang, Fenjie Long, Pengjun Zhao, Priti Parikh, Zhifu Mi","doi":"10.1038/s44284-026-00465-5","DOIUrl":"10.1038/s44284-026-00465-5","url":null,"abstract":"The rapid expansion of plug-in electric vehicles (PEVs) offers substantial potential for reducing nationwide carbon emissions, yet benefits vary across cities due to differing PEV adoption trajectories and spatial disconnects between vehicle use and power-plant emissions. Leveraging over 245 million vehicle registration records, we quantify PEV-related fuel-cycle carbon transfers across 285 Chinese cities. Here we show that economically developed cities transferred 41.8% of their PEV-related emissions to less developed cities in 2020, causing per-PEV emissions in the latter exceeding those of non-PEVs by 16.9%–52.0%. This outsourced carbon burden is projected to substantially increase climate mitigation costs for recipient cities. Furthermore, such intercity inequality in emission reductions is projected to remain elevated through 2030 due to growing disparities in PEV stocks across cities, before declining as the grid decarbonizes. Our findings highlight the importance of tailored, city-level decarbonization policies to promote an equitable and effective transition toward vehicle electrification. This study quantifies the cross-city carbon transfers related to plug-in electric vehicles across Chinese cities and reveals how this spatial redistribution of carbon responsibility can disadvantage less developed cities.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"3 7","pages":"629-641"},"PeriodicalIF":15.3,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s44284-026-00465-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467696","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 carbon transfers from vehicle electrification 汽车电气化带来的城际碳转移

IF 15.3

Nature Cities Pub Date : 2026-06-24 DOI: 10.1038/s44284-026-00467-3

David L. McCollum

引用次数: 0

Divergent surface urban heat island responses to background aerosol mitigation 发散型地表城市热岛对背景气溶胶减缓的响应

IF 15.3

Nature Cities Pub Date : 2026-06-19 DOI: 10.1038/s44284-026-00463-7

Shu Liu, Yuyu Zhou, Lei Zhao, Gerald Mills, Xinchang “Cathy” Li, Hongsheng Zhang, Karen C. Seto, Peng Gong

{"title":"Divergent surface urban heat island responses to background aerosol mitigation","authors":"Shu Liu, Yuyu Zhou, Lei Zhao, Gerald Mills, Xinchang “Cathy” Li, Hongsheng Zhang, Karen C. Seto, Peng Gong","doi":"10.1038/s44284-026-00463-7","DOIUrl":"10.1038/s44284-026-00463-7","url":null,"abstract":"Many countries face compounded risks from intensified urban heat islands (UHI) and air pollution. Although stringent aerosol emission controls have improved background air quality, their effects on UHI remain underexplored. Here, using large-ensemble global climate simulations, we show that background aerosol mitigations amplify warm-season surface UHI in humid climates but weaken it in arid regions. Aerosol reductions increase background downward solar radiation and warm both urban and rural surfaces. However, in humid climates, urban warming exceeds rural warming because limited evaporative cooling over impervious surfaces contrasts with increased rainfall, vegetation and evaporative cooling in surrounding rural areas. In arid climates, by contrast, rural warming surpasses urban warming as reduced rainfall and vegetation suppress rural evaporative cooling and ground heat storage relative to cities. These hydroclimate-dependent responses highlight the need to prioritize urban heat mitigation in humid regions to counteract disproportionately rising urban warming risks under continued aerosol reduction and rapid urbanization. Cities face co-occurring urban heat islands (UHIs) and air pollution, yet the impacts of aerosol cuts on urban–rural temperatures remain unclear. This study shows that cutting background aerosols strengthens summer UHIs in humid climates but weakens them in arid ones.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"3 7","pages":"654-664"},"PeriodicalIF":15.3,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467735","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

Wuliangye and Yibin 五粮液和宜宾

IF 15.3

Nature Cities Pub Date : 2026-06-19 DOI: 10.1038/s44284-026-00439-7

Junpeng Guo

引用次数: 0

Advancing a biocultural vision for Nusantara 推进努沙塔拉的生物文化愿景

IF 15.3

Nature Cities Pub Date : 2026-06-19 DOI: 10.1038/s44284-026-00460-w

Walker DePuy, Shorna Allred, Rustam, Abidin, Misael Kris Simone, Dursat, Lamale, Ardim, Wendy M. Erb

引用次数: 0

Rethinking urban nature as technonature 重新思考城市自然作为技术

IF 15.3

Nature Cities Pub Date : 2026-06-19 DOI: 10.1038/s44284-026-00471-7

Sophia Maalsen, Simon Marvin, Robyn Dowling

引用次数: 0

Urban congestion relief experiments through routing-app interventions 通过路由应用程序干预的城市拥堵缓解实验

IF 15.3

Nature Cities Pub Date : 2026-06-16 DOI: 10.1038/s44284-026-00443-x

Neha Arora, Alexandre Bayen, Theophile Cabannes, Kevin Chen, Abdul Rahman Kreidieh, Yechen Li, Marc Nunkesser, Prem Ramaswami, Andrew Tomkins, Eray Turkel, Shoshana Vasserman, Haizheng Zhang

{"title":"Urban congestion relief experiments through routing-app interventions","authors":"Neha Arora, Alexandre Bayen, Theophile Cabannes, Kevin Chen, Abdul Rahman Kreidieh, Yechen Li, Marc Nunkesser, Prem Ramaswami, Andrew Tomkins, Eray Turkel, Shoshana Vasserman, Haizheng Zhang","doi":"10.1038/s44284-026-00443-x","DOIUrl":"10.1038/s44284-026-00443-x","url":null,"abstract":"Traffic congestion remains a persistent challenge for urban mobility, increasing travel delays and elevating CO2 emissions. The widespread use of smartphones and GPS navigation creates new opportunities to mitigate congestion through routing optimizations in apps, yet real-world evidence for the effectiveness of such interventions is limited. Here we report large-scale empirical experiments evaluating routing-based traffic interventions on ~100 highly congested road segments across 10 major US cities. By rerouting a small share of Google Maps trips from targeted congested highway and arterial segments to less congested alternatives of equivalent road-classes with comparable travel times, we observe a city-average 2% increase in vehicle speeds on the intervened segments, along with improved travel times 0.7% and potential annual reductions exceeding 1,000 tons of CO2-equivalent emissions per city in the majority of studied locations. These findings provide evidence that marginal routing interventions involving a small proportion of vehicles can measurably enhance overall road network efficiency, offering a practical pathway to easing congestion and advancing urban sustainability. Traffic congestion is a growing concern for cities. This study offers real-world evidence that redirecting a small portion of navigation-app trips from congested routes can improve traffic speeds and travel times while reducing carbon emissions in major US cities.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"3 7","pages":"591-598"},"PeriodicalIF":15.3,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s44284-026-00443-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467690","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

Proxy datasets to identify city boundaries 用于识别城市边界的代理数据集

IF 15.3

Nature Cities Pub Date : 2026-06-16 DOI: 10.1038/s44284-026-00464-6

Céline Van Migerode, Ate Poorthuis, Ben Derudder

引用次数: 0

City racial segregation statistics are robust to aggregation bias 城市种族隔离的统计数据对汇总偏见是强有力的

IF 15.3

Nature Cities Pub Date : 2026-06-16 DOI: 10.1038/s44284-026-00459-3

Jacob R. Brown, Christopher T. Kenny, Tyler Simko

{"title":"City racial segregation statistics are robust to aggregation bias","authors":"Jacob R. Brown, Christopher T. Kenny, Tyler Simko","doi":"10.1038/s44284-026-00459-3","DOIUrl":"10.1038/s44284-026-00459-3","url":null,"abstract":"Residential segregation in US cities threatens economic opportunity and social cohesion. Most segregation estimates rely on aggregate data with arbitrary boundaries such as Census tracts. Sensitivity to boundary choices is well theorized but rarely measured. Here, leveraging redistricting software, we simulate millions of alternative Census tract maps that satisfy Census guidelines, compute segregation for each and estimate probabilistic distributions of common indices. This approach yields new estimates of racial segregation across US cities and measures the aggregation-induced variability hidden in conventional estimates. We find that variability is largely driven by the number of spatial units: simulated segregation in small cities varies widely across plans but converges in larger cities. We find no systematic bias: values calculated using official tract definitions closely track the mean of simulated alternative boundary definitions. While our findings confirm the practical robustness of Census tracts, we provide a general framework for diagnosing and correcting spatial aggregation error in other contexts. Residential segregation is a challenging reality in cities worldwide despite their diverse populations. Focusing on medium to large US cities, this study finds no systematic bias in racial segregation when different Census tract boundaries are used.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"3 7","pages":"618-628"},"PeriodicalIF":15.3,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467695","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

Connecting the general and particular in interdisciplinary urban research 连接跨学科城市研究中的一般与特殊

IF 15.3

Nature Cities Pub Date : 2026-06-12 DOI: 10.1038/s44284-026-00461-9

Patrick Roberts, W. Christopher Carleton, S. Yoshi Maezumi, CConUrb, Xuemei Bai, Zeynep Kezer, José Lobo, Scott G. Ortman, Diego Rybski, Simone Sandholz, Xiaoling Zhang

引用次数: 0