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Constructing (multi)functional soil using urban organic and sediment wastes 利用城市有机废弃物和泥沙废弃物构建多功能土壤
Pub Date : 2025-10-13 DOI: 10.1038/s44284-025-00332-9
Lauren Porter, Franziska B. Bucka, Natalie Páez-Curtidor, Monika Egerer, Ingrid Kögel-Knabner
As urban populations grow, planners must create sustainable, yet multifunctional city spaces. Urban soils are vital for green city initiatives, providing essential ecosystem services. Our research challenges the unsustainable practice of land-take and explores constructing (multi)functional soils from mineral and organic parent materials of the urban waste stream. We stack different qualities of organic amendments in innovative mixtures constructed of upcycled mineral soils from local construction projects to assess their potential in maximizing multiple ecosystem services within a constructed soil. Using key soil health indicators, we identify synergies for the parent material mixtures providing essential functions for urban soils: fertility for urban green, runoff infiltration, stormwater contaminant immobilization and stable carbon accrual. The highest joint multifunctionality is obtained by mixing organic amendments of varying qualities and reactivities. Soil-designing practitioners should be knowledgeable of their city’s regional geology, as the effectiveness of amendment mixtures depends on interactions with the geogenic materials. Soils underlie cities and are foundational to parks and other green infrastructure, but urban soils are often polluted or otherwise unsuitable. This study tests the potential for combining sediment construction wastes with high-carbon organic amendments, identifying mixtures that provide essential urban soil functions.
随着城市人口的增长,规划者必须创造可持续的、多功能的城市空间。城市土壤对绿色城市倡议至关重要,提供必要的生态系统服务。我们的研究挑战了不可持续的土地征用实践,并探索了从城市废物流的矿物和有机母质中构建(多)功能土壤。我们将不同质量的有机改进剂堆叠在由来自当地建筑项目的升级回收的矿物土壤构建的创新混合物中,以评估它们在构建土壤中最大化多种生态系统服务的潜力。利用关键的土壤健康指标,我们确定了母质混合物的协同作用,为城市土壤提供了基本功能:城市绿地肥力、径流入渗、雨水污染物固定化和稳定的碳积累。通过混合不同质量和反应性的有机改进剂,可以获得最高的联合多功能性。土壤设计从业者应该了解他们城市的区域地质,因为修正混合物的有效性取决于与地质物质的相互作用。土壤是城市的基础,是公园和其他绿色基础设施的基础,但城市土壤往往受到污染或以其他方式不适合。本研究测试了将沉积物建筑垃圾与高碳有机改改剂结合的潜力,确定了提供基本城市土壤功能的混合物。
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引用次数: 0
Author Correction: Individual and city-level variations in heat-related road traffic deaths in Latin America 作者更正:拉丁美洲与高温有关的道路交通死亡的个人和城市水平差异
Pub Date : 2025-10-09 DOI: 10.1038/s44284-025-00339-2
Cheng-Kai Hsu, D. Alex Quistberg, Brisa N. Sánchez, Josiah L. Kephart, Usama Bilal, Nelson Gouveia, Carolina Pérez Ferrer, Waleska T. Caiaffa, Amélia Augusta de Lima Friche, Ignacio Yannone, Daniel A. Rodríguez
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引用次数: 0
Remote sensing for healthy vegetation on green roofs 对绿色屋顶上健康植被的遥感
Pub Date : 2025-10-08 DOI: 10.1038/s44284-025-00331-w
Wenxi Liao, Madison Appleby, Howard Rosenblat, Md. Abdul Halim, Cheryl A. Rogers, Jing M. Chen, Liat Margolis, Jennifer A. P. Drake, Sean C. Thomas
Green roofs have been increasingly implemented in cities globally to enhance urban ecosystem services. However, temporal trends in green roof vegetation health and the effects of design considerations at a large scale remain unclear. Here we used very high-resolution multispectral remote sensing imagery to quantify the temporal changes in vegetation health and associated roof characteristics across 1,380 individual green roof units in Toronto from 2011 to 2018. Results show an average increase in vegetation health and a decline in vegetation patchiness as green roofs age. We identify unit area, building height and vegetation type as the primary roof characteristics influencing vegetation health, with area positively and building height inversely affecting vegetation health. In terms of vegetation type, sedum mats are generally healthier than woody plants and grasses. Additionally, we identify critical thresholds in roof characteristics that support sustained vegetation health. These findings present a robust analytical framework for the long-term assessment and design optimization of green roofs in complex urban environments. Green roofs enhance urban ecosystem services, but the long-term vegetation health and design’s impact is underexplored. This study shows a temporal increase in vegetation health and identifies key factors and thresholds that support sustained vegetation health, offering guidance for effective green roof planning and design.
绿色屋顶已越来越多地在全球城市中实施,以增强城市生态系统服务。然而,绿色屋顶植被健康的时间趋势和大规模设计考虑的影响仍不清楚。在这里,我们使用非常高分辨率的多光谱遥感图像来量化2011年至2018年多伦多1380个单独绿色屋顶单元的植被健康和相关屋顶特征的时间变化。结果表明,随着绿化屋顶的老化,植被健康程度平均增加,植被斑块度下降。确定单位面积、建筑高度和植被类型是影响植被健康的主要屋顶特征,面积对植被健康的影响为正,建筑高度对植被健康的影响为负。就植被类型而言,景天草席通常比木本植物和禾本科植物更健康。此外,我们确定了支持持续植被健康的屋顶特征的关键阈值。这些发现为复杂城市环境中绿色屋顶的长期评估和设计优化提供了一个强有力的分析框架。绿色屋顶增强了城市生态系统服务,但长期植被健康和设计的影响尚未得到充分探讨。该研究显示了植被健康的时间增长,并确定了支持持续植被健康的关键因素和阈值,为有效的绿色屋顶规划和设计提供了指导。
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引用次数: 0
Disruption of the oak tree microbiome with urbanization 城市化对橡树微生物群的破坏
Pub Date : 2025-10-03 DOI: 10.1038/s44284-025-00322-x
Kathryn F. Atherton, Chikae Tatsumi, Isabelle Frenette, David Heaton, Ian A. Smith, Lucy R. Hutyra, Pamela H. Templer, Jennifer M. Bhatnagar
The tree microbiome, the community of bacteria and fungi that live in and on trees, is a critical determinant of tree and ecosystem functioning, but human-caused disturbances can disrupt natural microbe–tree relationships. Here we show that urbanization shifts the structure and composition of the oak tree microbiome, reducing mutualistic root and leaf symbionts and increasing decomposers and pathogens, including those relevant to plant, animal and human health. These shifts correlate with urban stressors such as heat, drought and atmospheric aerosol deposition. Urban tree microbiomes also show altered biogeochemical cycling capabilities, with higher potential for nitrogen loss through greenhouse gas (N2O) production and reduced capacity for methane consumption relative to rural trees. Urbanization reduces overall tree microbiome diversity, particularly among non-pathogenic microbes, potentially diminishing the ecological and health benefits of environmental microbiomes in cities. Urbanization disrupts oak tree microbiomes by reducing beneficial fungi and increasing plant and human pathogens across leaves, roots and soils, with consequences for tree health, urban climate mitigation and potential human exposure to pathogens.
树木微生物群,即生活在树上和树上的细菌和真菌群落,是树木和生态系统功能的关键决定因素,但人类造成的干扰可能会破坏自然的微生物与树木的关系。研究表明,城市化改变了橡树微生物群的结构和组成,减少了共生的根和叶共生体,增加了与植物、动物和人类健康相关的分解者和病原体。这些变化与城市压力有关,如高温、干旱和大气气溶胶沉积。城市树木微生物组也显示出生物地球化学循环能力的改变,与农村树木相比,城市树木通过生产温室气体(N2O)损失氮的可能性更高,而甲烷消耗能力则更低。城市化降低了树木微生物群的总体多样性,特别是在非致病微生物中,潜在地削弱了城市环境微生物群的生态和健康益处。城市化通过减少有益真菌和增加树叶、根和土壤中的植物和人类病原体来破坏橡树的微生物群,从而对树木健康、城市气候缓解和人类潜在的病原体暴露产生影响。
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引用次数: 0
The mediatization of urban development and Egypt’s New Administrative Capital 城市发展的媒介化与埃及的新行政首都
Pub Date : 2025-10-03 DOI: 10.1038/s44284-025-00250-w
Mennatullah Hendawy, R. R. Riad, S. H. Elgredly
Media covers cities in myriad ways. This study examines the mediatization of an urban megadevelopment project, analyzing Al-Ahram Egyptian national press coverage of Egypt’s New Administrative Capital City project. We used thematic analysis and discourse analysis to investigate the technical media advertising of the project through a sample of 111 news headlines from 2015 (the project launch year) to 2019. The analysis revealed key shifts in planning news over time, reflecting the ways in which urban politics virtually, visually and discursively reinforce physical, exclusive urban growth. Media coverage tended to emphasize visual enticement, design spectacles and short-term financial returns while affordability and accessibility for the urban majority received comparatively less attention. More broadly, this study indicates how media not only communicates and visualizes urban futures but also has the potential to recreate them, as neoliberal urban policies advance through a mutually reinforcing relationship between media and the urban planning processes. Media informs how we see our cities and ourselves. Using news headlines, this study reveals how the press coverage of Egypt’s New Administrative Capital City project reinforced a vision of urban growth that echoed commercial aspirations.
媒体以各种方式报道城市。本研究考察了城市大型开发项目的媒介化,分析了埃及新行政首都项目的金字塔埃及国家新闻报道。我们以2015年(项目启动年)至2019年的111条新闻头条为样本,采用主题分析和话语分析的方法对项目的技术媒体广告进行了调查。分析揭示了随着时间的推移,规划新闻的关键变化,反映了城市政治在虚拟、视觉和话语上加强实体的、排外的城市增长的方式。媒体的报道往往强调视觉上的诱惑、设计上的壮观和短期的经济回报,而对城市大多数人的负担能力和可及性的关注相对较少。更广泛地说,这项研究表明,随着新自由主义城市政策通过媒体与城市规划过程之间相互加强的关系而推进,媒体不仅可以传达和可视化城市未来,而且还具有重建城市未来的潜力。媒体告诉我们如何看待我们的城市和我们自己。本研究利用新闻标题揭示了埃及新行政首都项目的新闻报道如何强化了与商业愿望相呼应的城市发展愿景。
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引用次数: 0
Policy visions and lived realities diverge in pursuit of urban quality of life in Africa 在追求非洲城市生活质量方面,政策愿景和生活现实存在分歧
Pub Date : 2025-10-01 DOI: 10.1038/s44284-025-00323-w
Niké Susan Wesch, Sonja De Beer, Carike Claassen, Roelof Petrus Burger, Selna Cornelius, Elizelle Juaneé Cilliers, Stuart John Piketh
Conflicting interests and logic weaken policy effectiveness and induce clashes between the state and local communities. As the “protest capital of the world,” this is particularly evident in South Africa. The study uses a grounded theory approach, combining the analysis of government planning directives with qualitative data from seven South African low-income communities, to explore how quality of life is understood and prioritized. Although state and community actors broadly agree on what contributes to quality of life, the findings reveal important disconnects in how priorities are framed. These misalignments emerge across temporal, responsibility and spatial dimensions. Communities face daily employment, services and safety challenges, whereas state planning often focuses on long-term development. Improving the quality of life will require recognizing that spatial decisions are shaped by interpretation, power dynamics and the uneven use of data in decision-making. State planning goals in South Africa often misalign with the lived realities of communities despite shared quality-of-life visions. Analysis across low-income communities reveals temporal, spatial and responsibility disconnects between government directives and urgent local needs.
利益和逻辑的冲突削弱了政策的有效性,并引发了国家与地方社区之间的冲突。作为“世界抗议之都”,这一点在南非尤为明显。该研究采用了一种基于理论的方法,将对政府规划指令的分析与来自七个南非低收入社区的定性数据相结合,探索如何理解生活质量并确定其优先顺序。尽管国家和社区行为者对什么有助于提高生活质量的看法大体一致,但研究结果显示,在如何确定优先事项方面存在重大脱节。这些偏差出现在时间、责任和空间维度上。社区面临着日常就业、服务和安全方面的挑战,而国家规划往往侧重于长期发展。提高生活质量需要认识到,空间决策是由解释、权力动态和决策中数据的不平衡使用所决定的。南非的国家规划目标往往与社区的生活现实不一致,尽管有共同的生活质量愿景。对低收入社区的分析揭示了政府指令与当地迫切需求之间的时间、空间和责任脱节。
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引用次数: 0
A systematic map of machine learning for urban climate change mitigation 减缓城市气候变化的机器学习系统地图
Pub Date : 2025-09-29 DOI: 10.1038/s44284-025-00328-5
Marie Josefine Hintz, Nikola Milojevic-Dupont, Felix Creutzig, Tim Repke, Lynn H. Kaack
Many cities are interested in leveraging artificial intelligence and machine learning (ML) to help urban climate change mitigation (UCCM). Researchers and practitioners, however, are only beginning to understand how ML can contribute to achieving climate targets in cities. Here, we systematically map 2,300 peer-reviewed articles published between 1994 and 2024 that explore the use of ML in UCCM. We find that, despite fast growth in this research area, the use of generative artificial intelligence and large language models remains negligible, which contrasts to their increasing adoption in other urban domains. Among 40 identified application areas, ML research focuses predominantly on high-impact mitigation options denoted by the Intergovernmental Panel on Climate Change. This trend may partly be driven by data availability and commercial interest, which risk perpetuating geographic inequities and diverting efforts toward less impactful mitigation options. We therefore offer recommendations to guide the impactful deployment of ML solutions in UCCM. At the nexus of machine learning and urban climate change mitigation, this systematic map identifies a fast growth of research, highlights under-researched impact areas and reveals geographic biases. It also offers recommendations to promote the impactful deployment of machine learning solutions in this urban domain.
许多城市都有兴趣利用人工智能和机器学习(ML)来帮助缓解城市气候变化(UCCM)。然而,研究人员和实践者才刚刚开始了解机器学习如何为实现城市气候目标做出贡献。在这里,我们系统地绘制了1994年至2024年间发表的2300篇同行评议文章,这些文章探索了ML在UCCM中的应用。我们发现,尽管这一研究领域发展迅速,但生成式人工智能和大型语言模型的使用仍然可以忽略不计,这与它们在其他城市领域的日益普及形成鲜明对比。在确定的40个应用领域中,机器学习研究主要侧重于政府间气候变化专门委员会提出的高影响缓解方案。这一趋势可能部分受到数据可用性和商业利益的推动,这可能使地域不平等永久化,并使努力转向影响较小的缓解办法。因此,我们提供了一些建议,以指导在UCCM中有效部署ML解决方案。在机器学习和减缓城市气候变化的关系中,这张系统的地图确定了研究的快速增长,突出了研究不足的影响领域,并揭示了地理偏见。它还提供了一些建议,以促进机器学习解决方案在城市领域的有效部署。
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引用次数: 0
The dependence of urban tick and Lyme disease hazards on the hinterlands 城市蜱和莱姆病危害对腹地的依赖
Pub Date : 2025-09-23 DOI: 10.1038/s44284-025-00320-z
Sara L. Gandy, Jessica L. Hall, Grace Plahe, Kirsty Watkinson, David Johnson, Richard J. Birtles, Lucy Gilbert
Within- and between-city contexts and interactions shape our experiences of city life. However, a gap in understanding is how the wider landscape context of cities and the interactions with hinterlands influence urban ecology and health hazards. Using a meta-ecosystem framework, we fill this gap for the tick-borne Lyme disease ecological system by comparing the tick and Lyme disease hazards of urban and hinterland sites for 16 UK cities. We discover that the environmental hazards of ticks and Lyme disease of urban greenspaces are two- and threefold lower, respectively, than those of hinterland woodlands. Crucially, urban tick and Lyme disease hazards are shaped by tick abundance and the landcover (woodland and built-up) of hinterlands, but not of cities themselves. This highlights how rural–urban interactions form meta-ecosystems, and urban eco-epidemiology can depend on the characteristics of the surrounding rural landscape. Therefore, to better understand urban ecological processes and to mitigate disease risk in cities, it may be necessary to consider environmental factors in the hinterland such as landcover and disease hazard outside cities. Context counts, and not just for social and economic aspects of urban life. This study finds that, for 16 cities in the United Kingdom, the landcover of the rural surroundings is a better predictor of ticks and environmental Lyme disease hazard than the landcover within the cities themselves.
城市内部和城市之间的背景和互动塑造了我们的城市生活体验。然而,在理解上的差距是城市更广泛的景观背景和与腹地的相互作用如何影响城市生态和健康危害。利用元生态系统框架,我们通过比较16个英国城市和内陆地区的蜱虫和莱姆病危害,填补了蜱传莱姆病生态系统的这一空白。研究发现,城市绿地对蜱虫和莱姆病的环境危害分别比腹地林地低2倍和3倍。至关重要的是,城市蜱虫和莱姆病的危害是由蜱虫数量和内陆地区的土地覆盖(林地和建筑)决定的,而不是城市本身。这突出了城乡相互作用如何形成元生态系统,以及城市生态流行病学如何依赖于周围农村景观的特征。因此,为了更好地了解城市生态过程和减轻城市疾病风险,可能有必要考虑腹地的环境因素,如土地覆盖和城市外的疾病危害。背景很重要,而且不仅仅是城市生活的社会和经济方面。这项研究发现,在英国的16个城市中,农村周围的土地覆盖比城市本身的土地覆盖更能预测蜱虫和环境莱姆病的危害。
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引用次数: 0
Harmonizing with nature in cities 在城市中与自然和谐相处
Pub Date : 2025-09-18 DOI: 10.1038/s44284-025-00247-5
Mojtaba Parsaee
Urban resilience is rooted in our ability to harmonize with nature and cultivate deeper relationships with local climates. Mojtaba Parsaee reflects on how the historic neighborhoods of four cities have nurtured his poetic bond with harsh climates, which inspires his vision of resilience.
城市韧性植根于我们与自然和谐相处的能力,以及与当地气候建立更深层次关系的能力。Mojtaba Parsaee反思了四个城市的历史街区如何培养了他与恶劣气候的诗意联系,这激发了他对韧性的看法。
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引用次数: 0
Cities rising to climate challenges 城市应对气候挑战
Pub Date : 2025-09-18 DOI: 10.1038/s44284-025-00329-4
Cities frequently find themselves on the frontlines of the climate crisis, facing acute environmental risks while also holding the potential to lead transformative changes. In this joint Focus issue between Nature Climate Change and Nature Cities, we explore how cities are evolving into strategic actors by harnessing public education, engineering innovation and governance frameworks to drive climate solutions.
城市经常发现自己处于气候危机的前沿,面临严峻的环境风险,同时也有可能引领变革。在本期《自然-气候变化》和《自然城市》的联合关注议题中,我们探讨了城市如何通过利用公共教育、工程创新和治理框架来推动气候解决方案,从而演变为战略行为体。
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引用次数: 0
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Nature Cities
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