City and Environment Interactions最新文献_第10页

Urban snow and ice removal and storage: A systematic literature review 城市冰雪清除和储存：系统的文献综述

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-30 DOI: 10.1016/j.cacint.2025.100213

Mina Khodadad, Mohsen Sanei, Agatino Rizzo, Jing Ma

Urban Snow and Ice Removal and Storage (USIRS) is an essential and demanding component of urban management in areas experiencing harsh weather during the winter. This present study offers a systematic review of the literature in the USIRS field of study through analyzing 81 peer-reviewed academic papers listed in Scopus and Web of Science (published between 1960 and mid-2024). The pertinent research was thoroughly synthesized using content analysis by manual coding in ATLAS.ti software (to assist textual analysis), network visualization, and co-occurrence analyses (including temporal and geographical distributions). The results shed light on regional and temporal trends, links, and patterns across USIRS goals and strategies, and snow/ice reuse and deposit/dumping forms. These patterns also revealed common and not well-known connections in the literature. The findings indicate that the literature has divided USIRS goals into four categories: traffic, economic, human safety, and environmental. The most often discussed goals are connected to traffic (37%), with cost-efficiency coming in second (29%). Mechanical snow removal (41.96%) and de-icing (30.36%) are the most used USIRS strategies. While most defined snow/ice deposit or dumping forms are categorized as central (22.08%) or local (19.48%) deposits, emerging innovative practices like storing snow for cooling highlight the possibility of energy savings as the most prevalent type of snow/ice reuse outlined in literature. This study provides a beneficial resource for urban planners, academics, and policymakers by highlighting several hotspots and gaps within USIRS research. It aims to strengthen urban resilience to deal with winter difficulties and maximize the benefits of USIRS practices.

城市冰雪清除和储存（USIRS）是冬季经历恶劣天气地区城市管理的重要组成部分。本研究通过分析Scopus和Web of Science中列出的81篇同行评议学术论文（发表于1960年至2024年中期），对USIRS研究领域的文献进行了系统回顾。通过ATLAS手工编码进行内容分析，全面综合相关研究。Ti软件（协助文本分析）、网络可视化和共现分析（包括时间和地理分布）。结果揭示了USIRS目标和战略之间的区域和时间趋势、联系和模式，以及雪/冰再利用和沉积/倾倒形式。这些模式也揭示了文献中常见的和不为人所知的联系。研究结果表明，文献将USIRS的目标分为四类：交通、经济、人类安全和环境。最常讨论的目标与流量有关（37%），其次是成本效益（29%）。机械除雪（41.96%）和除冰（30.36%）是最常用的USIRS策略。虽然大多数定义的雪/冰沉积或倾倒形式被归类为中央（22.08%）或局部（19.48%）沉积，但新兴的创新实践，如储存雪用于冷却，突出了节约能源的可能性，这是文献中概述的最普遍的雪/冰再利用类型。本研究通过突出USIRS研究中的几个热点和差距，为城市规划者、学者和政策制定者提供了有益的资源。它旨在加强城市抵御能力，以应对冬季困难，并最大限度地发挥USIRS实践的效益。

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引用次数: 0

Climate walking: A comparison study of mobile weather stations and their relevance for urban planning, design, human health and well-being 气候行走：移动气象站的比较研究及其与城市规划、设计、人类健康和福祉的相关性

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-28 DOI: 10.1016/j.cacint.2025.100212

T. Silva , R. Ramusga , M. Matias , J. Amaro , A. Bonifácio , C. Reis , A. Chokhachian , G. Lopes , A. Almeida , J. Frazão , J. Vasconcelos , A. Lopes , P. Morgado

Microclimate conditions affect the outdoor urban way of life for humans. These conditions directly impact people’s health and well-being, such as access to medical care or a healthy lifestyle. Human thermal comfort is paramount for people’s health, both physical and mental. In this paper, the study compares two microclimate mobile weather stations (MWS) based on a set of users’-based assessment criteria (usability, user-friendliness, sensors) and thermal comfort (UTCI) results accuracy. The comparison was carried out through continuous mobile transect measurements lasting an hour and a half, conducted on two summer days in Lisbon across distinct urban morphological settings. This research was developed to assist future researchers in urban climatology with the design of microscale studies, particularly in relation to equipment selection, performance assessment, and methodological procedures. In terms of performance, we found the RMSE to be 1.3 °C for air temperature, 1.6 % for relative humidity, 1.3 m/s for wind speed, and 8.4 W/m2 for solar radiation for MWS 1, and 1.5 °C for air temperature, 2.9 % for relative humidity, 1.5 m/s for wind speed, and 11.6 W/m2 for radiation for MWS 2. Both MWS units exhibited a consistent performance, however, MWS 1 demonstrated greater overall accuracy, particularly in the measurement of air temperature, relative humidity, and wind speed. Differences were also observed between the sensors of MWS 1 and MWS 2, as well as in the MWS usability, factors which may be significant depending on the users’ objectives and available resources. Despite this, both MWS units were deemed suitable for deployment in urban environments, with MWS 2 offering a more intuitive user experience. The findings of this study are particularly relevant for those beginning mobile meteorological measurements, as well as for researchers aiming to address urban heat stress and enhance public well-being and thermal comfort through their work. However, the study is limited by its short duration and geographic scope, and further research is needed to expand its applicability to diverse urban settings.

小气候条件影响着人类的户外城市生活方式。这些情况直接影响人们的健康和福祉，例如获得医疗保健或健康的生活方式。人体热舒适对人们的身心健康至关重要。本文基于一套基于用户的评价标准（可用性、用户友好性、传感器）和热舒适（UTCI）结果精度，对两种微气候移动气象站（MWS）进行了比较。比较是通过持续一个半小时的连续移动样带测量进行的，在里斯本的两个夏天，在不同的城市形态设置中进行。这项研究旨在帮助未来城市气候学研究人员设计微尺度研究，特别是在设备选择、性能评估和方法程序方面。在性能方面，我们发现MWS 1的空气温度RMSE为1.3°C，相对湿度为1.6%，风速为1.3 m/s，太阳辐射为8.4 W/m2， MWS 2的空气温度RMSE为1.5°C，相对湿度为2.9%，风速为1.5 m/s，辐射为11.6 W/m2。两个MWS设备表现出一致的性能，然而，MWS 1表现出更高的整体精度，特别是在测量空气温度、相对湿度和风速方面。我们还观察到MWS 1和MWS 2的传感器之间的差异，以及MWS可用性方面的差异，这些因素可能取决于用户的目标和可用资源。尽管如此，两个MWS单元都被认为适合在城市环境中部署，MWS 2提供了更直观的用户体验。这项研究的发现对于那些开始移动气象测量的人，以及旨在通过他们的工作解决城市热压力和提高公众福祉和热舒适的研究人员来说尤其重要。然而，由于研究时间短，地理范围有限，需要进一步研究以扩大其对不同城市环境的适用性。

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引用次数: 0

Promoting urban air quality resilience through communication: A stakeholder needs mapping and prioritisation study informed by design thinking 通过沟通促进城市空气质量的恢复力：利益相关者需要通过设计思维进行制图和优先级研究

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-24 DOI: 10.1016/j.cacint.2025.100209

Roberto Cibin , Dean S. Venables , Marica Cassarino

Air pollution (AP) poses significant global health risks and exacerbates socio-economic inequities, especially in urban contexts. This study mapped stakeholder needs and priorities for developing communication strategies to foster air quality (AQ) resilience, using Cork City, Ireland, as a case study. Employing a Design Thinking approach, the research involved consultations in the form of qualitative interviews and one focus group (n = 62), followed by a quantitative survey (n = 105) to prioritise identified needs. Stakeholders included, among others, residents, policymakers, health professionals, and academics. The needs assessment revealed two key areas related to enhancing communication functions, channels and formats, and addressing policy and systemic issues. Effective AQ communication must address public understanding of AP risks, empower adaptive behaviours, and mobilise civic engagement. Stakeholders emphasised the need for accessible, contextually relevant, and solution-oriented communication. Systemic needs encompassed enhancing local policies, infrastructure, and governance to support behavioural changes, such as reducing car dependence and promoting sustainable heating practices. Consultations revealed social, cultural, and infrastructural challenges to making AQ communication effective, and underscored the necessity of inclusive, participatory approaches. The need prioritisation results indicate that stakeholders value systemic improvements, such as increased urban green spaces and appropriate public transport infrastructure, alongside tailored communication strategies. This research underscores the importance of integrating communication with systemic interventions to enhance urban AQ resilience. The findings informed co-creation of actionable, equitable AQ communication strategies and contribute to broader debates on environmental sustainability and community resilience. Future work should extend participatory methodologies to diverse contexts and emphasize socio-ecological interactions for effective environmental communication.

空气污染构成重大的全球健康风险，并加剧了社会经济不平等，尤其是在城市环境中。本研究以爱尔兰科克市为例，绘制了利益相关者在制定促进空气质量（AQ）恢复力的沟通策略方面的需求和优先事项。采用设计思维方法，研究包括以定性访谈和一个焦点小组（n = 62）的形式进行磋商，然后进行定量调查（n = 105），以确定确定的需求的优先级。除其他外，利益攸关方包括居民、政策制定者、卫生专业人员和学者。需求评估揭示了与加强沟通功能、渠道和形式以及解决政策和系统问题有关的两个关键领域。有效的空气质量沟通必须解决公众对空气质量风险的理解，增强适应性行为的能力，并动员公民参与。利益攸关方强调需要无障碍、情境相关和面向解决方案的沟通。系统性需求包括加强地方政策、基础设施和治理，以支持行为改变，如减少对汽车的依赖和促进可持续供暖实践。磋商揭示了使AQ沟通有效的社会、文化和基础设施方面的挑战，并强调了包容性、参与性方法的必要性。需求优先排序结果表明，利益相关者重视系统改进，例如增加城市绿地和适当的公共交通基础设施，以及量身定制的沟通策略。本研究强调了将沟通与系统干预相结合以增强城市AQ复原力的重要性。研究结果为共同制定可操作、公平的AQ传播战略提供了信息，并有助于就环境可持续性和社区复原力展开更广泛的辩论。今后的工作应将参与式方法扩展到各种情况，并强调社会生态的相互作用，以便进行有效的环境交流。

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引用次数: 0

Field diagnosis of farmers’ adaptation challenges to climate change in the agricultural urban landscapes 农业城市景观中农民对气候变化适应挑战的实地诊断

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-17 DOI: 10.1016/j.cacint.2025.100208

Henry Mensah

Climate change presents a significant challenge to urban agriculture, as shifts in weather patterns lead to extreme weather events such as floods, droughts, and storms, consequently destroying crops and livestock. However, it remains unclear how urban farmers adapt to these impacts and what strategies they employ to mitigate climate-related challenges. This study selected 85 urban farmers across three selected locations in Kumasi, Ghana to investigate the adaptation practices and challenges, aiming to inform agricultural and urban planning efforts. Factor analysis, Ordinal regression and Relative Importance Index (RII) were used to analyse the quantitative data, while content analysis was used for qualitative data. The study identified three key adaptation strategies. First, farmers prefer planting local crop varieties over foreign seeds due to their reliable germination; second, some farmers expand their farms to boost production; and third, others relocate to different sites to allow exhausted land to regain fertility. However, these adaptation strategies are hindered by several challenges such as institutional and technological limitations, financial constraints and lack of access to climate information, and delays in extension support and adaptation efforts. The study also found that socioeconomic factors such as farm income, land ownership, and membership in farmer associations also influence the adoption of certain practices. These findings highlight the urgent need for the agricultural and physical planning departments to regularly monitor urban farming activities and give urban farmers the necessary attention. This will help identify urban farmers’ needs − tools, equipment, extension services, and modern technology thus enhancing climate resilience and sustainable urban agriculture.

气候变化给城市农业带来了重大挑战，因为天气模式的变化会导致洪水、干旱和风暴等极端天气事件，从而摧毁农作物和牲畜。然而，目前尚不清楚城市农民如何适应这些影响，以及他们采取了哪些策略来缓解与气候相关的挑战。本研究选择了加纳库马西三个选定地点的85名城市农民，调查适应实践和挑战，旨在为农业和城市规划工作提供信息。定量资料采用因子分析、序数回归和相对重要性指数（RII）分析，定性资料采用内容分析。该研究确定了三个关键的适应策略。首先，农民更喜欢种植本地作物品种，而不是外国种子，因为它们发芽可靠；第二，一些农民扩大农场规模，提高产量；第三，其他人搬迁到不同的地点，让枯竭的土地重新获得肥力。然而，这些适应战略受到一些挑战的阻碍，如制度和技术限制、资金限制和缺乏获取气候信息的途径，以及扩大支持和适应工作的延迟。研究还发现，农业收入、土地所有权和农民协会成员资格等社会经济因素也会影响某些做法的采用。这些发现突出表明，农业和自然规划部门迫切需要定期监测城市农业活动，并给予城市农民必要的关注。这将有助于确定城市农民对工具、设备、推广服务和现代技术的需求，从而增强气候适应能力和可持续城市农业。

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引用次数: 0

Impact of municipal solid waste compost on Spinacia oleracea L. (Spinach) Yield: Health risk assessment and dosing optimization 城市生活垃圾堆肥对菠菜产量的影响：健康风险评估及投加优化

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-15 DOI: 10.1016/j.cacint.2025.100207

Pallavi Bhardwaj , Abhishek Chauhan , Anuj Ranjan , Vishnu D. Rajput , Usha Mina , Naveen Chandra Joshi , Laurent Dufossé , Ashutosh Tripathi

The increasing demand for effective Municipal Solid Waste (MSW) management stresses the importance of sustainable disposal approaches. Composting biodegradable solid waste offers such a solution, but it raises concerns about contamination with xenobiotics. This study evaluates the impact of Municipal Solid Waste Compost (MSWC) sourced from open landfills on agricultural soils and the yield of Spinacia oleracea L. (Spinach). The suitability of MSWC as a soil amendment was characterized using the Fertilization Index (FI) and Cleanliness Index (CI), while the risk of trace metal (TM) contamination was assessed through the Pollution Index (PI), Pollution Load Index (PLI), and Enrichment Factor (EF). The results show that MSWC application improved soil health but did not significantly enhance plant performance. Higher MSWC concentrations in amended soil increased TM levels, including Cu, Cr, Cd, Pb, and Ni, often exceeding permissible thresholds for soil and plant safety. At a 25% application rate, PI and PLI values indicated low to moderate pollution, while EF suggested no significant accumulation of Cu, Cr, Cd, or Ni but moderate enrichment of Pb. The study infers that while MSWC can condition soil, its use must be carefully managed to mitigate toxicity risks. This research highlights the dual potential and challenges of using MSWC in agriculture, emphasizing the need for optimized application strategies to balance soil improvement with food safety.

对有效的城市固体废物（MSW）管理的需求日益增加，强调了可持续处理方法的重要性。将可生物降解的固体废物堆肥提供了这样一种解决方案，但它引起了人们对外来生物污染的担忧。本研究评估了来自露天填埋场的城市固体废物堆肥（MSWC）对农业土壤和菠菜产量的影响。利用施肥指数（FI）和洁净度指数（CI）评价了MSWC作为土壤改色剂的适宜性，通过污染指数（PI）、污染负荷指数（PLI）和富集系数（EF）评价了微量金属（TM）污染的风险。结果表明，施用MSWC改善了土壤健康，但对植物生产性能没有显著提高。改良土壤中较高的MSWC浓度增加了TM水平，包括Cu、Cr、Cd、Pb和Ni，通常超过土壤和植物安全允许的阈值。在25%的施用量下，PI和PLI值表明污染程度为低至中度，而EF值表明Cu、Cr、Cd和Ni没有显著积累，但Pb有中度富集。该研究推断，虽然MSWC可以调节土壤，但必须仔细管理其使用以减轻毒性风险。本研究强调了MSWC在农业中的双重潜力和挑战，强调了优化应用策略的必要性，以平衡土壤改良与食品安全。

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引用次数: 0

Overheating in a common Swedish residential multi-story building under current and future climate − Integrating trees to combat overheating 当前和未来气候下瑞典普通住宅多层建筑的过热问题——利用树木来防止过热

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-11 DOI: 10.1016/j.cacint.2025.100206

Jutta Schade , Peter Ylmén , Nils Wallenberg , Sofia Thorsson

Swedish buildings are well insulated for winter climate, but often not optimized for summer, leading to risks of overheating during heat extremes (including heat waves). Along with a warmer climate, the risks of overheating and need for cooling are expected to increase.

In this study, present and future intensity, frequency and length of overheating, based on the newly implemented recommendations for indoor temperature from the Swedish Public Health Agency, is assessed for a typical Swedish multi-story residential building in Gothenburg, Sweden. Overheating is simulated for different floor levels and room orientations using the IDA-ICE building performance simulation software. The present climate (2008–2020) is represented by observed meteorological data and the future climate (2071–2100) by statistically downscaling the observations based on RCP4.5 simulations from the EURO-CORDEX project. Furthermore, the shading effect of trees at varying distances from the building is explored.

Results show that overheating occurs during heat extremes from April to October, with the highest frequency in July. Overheating periods are projected to become more intense, more frequent and longer by the end of the century. During heat waves, overheating occurs throughout the day and may last for weeks, potentially impacting not only risk groups but also the general population. The risk of overheating increases with floor level and is largest for rooms facing west and south with large windows. Trees close to buildings considerably reduce overheating in the present as well as in the future warmer climate, highlighting their effective passive cooling potential during heat extremes.

The results, which are considered applicable to a large part of the building stock in Sweden as well as in other countries with similar climate and building practices, highlight the present and future challenges with overheating and the potential of trees for mitigating overheating and reducing the cooling demand in buildings.

瑞典的建筑对冬季气候有很好的隔热效果，但往往没有针对夏季进行优化，导致在极端高温（包括热浪）时过热的风险。随着气候变暖，过热的风险和冷却需求预计会增加。在本研究中，根据瑞典公共卫生机构最新实施的室内温度建议，对瑞典哥德堡一栋典型的瑞典多层住宅进行了当前和未来的过热强度、频率和持续时间的评估。使用IDA-ICE建筑性能模拟软件对不同楼层和房间朝向进行过热模拟。当前气候（2008-2020年）由观测到的气象资料表示，未来气候（2071-2100年）由基于EURO-CORDEX项目RCP4.5模拟的观测数据统计降尺度表示。此外，还探讨了距离建筑不同距离的树木的遮阳效果。结果表明：4 ~ 10月为极端高温季节，其中7月出现频率最高；预计到本世纪末，过热期将变得更加强烈、更加频繁和更长。在热浪袭来的时候，身体过热会全天发生，并可能持续数周，这不仅可能影响到高危人群，也可能影响到普通人群。过热的风险随着楼层的高低而增加，朝西和朝南有大窗户的房间过热的风险最大。靠近建筑物的树木大大减少了当前和未来变暖气候下的过热，突出了它们在极端高温期间有效的被动冷却潜力。研究结果被认为适用于瑞典以及其他具有类似气候和建筑实践的国家的大部分建筑库存，突出了当前和未来的过热挑战，以及树木在缓解过热和减少建筑物冷却需求方面的潜力。

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引用次数: 0

Building ‘soil-darity’: Identifying personal priorities to facilitate greater participation in community composting initiatives to enhance urban resilience in Singapore 建立“土壤团结”：确定个人优先事项，以促进更多地参与社区堆肥倡议，以增强新加坡的城市韧性

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-09 DOI: 10.1016/j.cacint.2025.100205

Wayne Stanley Rice , Sarah Hian May Chan , Cuifen Pui

More than half the global population lives in urban areas that account for the majority of natural resource consumption, waste generation, and greenhouse gas emissions. Addressing the interconnected challenges to urban resilience – including climate regulation, food security, and urban health – requires a holistic and integrated approach. Urban green spaces hold huge potential in this effort, but maximizing their contributions depends on enhancing soil security, which encompasses both soil health and, importantly, promoting essential urban human-soil interactions. In this context, urban soil stewardship such as community composting plays a crucial but often overlooked role in fostering a more integrated and regenerative approach to achieving greater urban resilience. Using Q methodology and qualitative methods, this study investigates perceptions of individuals participating in community composting in the densely-populated city-state of Singapore. The Q study identified three distinct motivational ‘personas’ prioritising: (a) the ability to act, (b) personal satisfaction and growth, and (c) a personal sense-of-duty to the environment and future generations. Participants also shared reasons for their initial and continued participation and identified key required participation ‘enablers’. Based on the findings, recommendations are proposed to inform multistakeholder policies, strategies and governance arrangements able to unlock soil stewardship’s potential as a strategy to enhance resilience in the country. Whilst focused on the Singaporean context, findings are nonetheless relevant to diverse stakeholders attempting to promote multistakeholder policy and practice required to build urban resilience and address commitments to the Sustainable Development Goals and Paris Agreement.

全球一半以上的人口居住在城市地区，城市占自然资源消耗、废物产生和温室气体排放的大部分。应对城市抗灾能力面临的相互关联的挑战——包括气候调节、粮食安全和城市卫生——需要采取全面和综合的方法。城市绿地在这方面具有巨大的潜力，但最大限度地发挥其作用取决于增强土壤安全，这既包括土壤健康，也包括促进基本的城市人土相互作用。在这种情况下，社区堆肥等城市土壤管理在促进更综合和可再生的方法以实现更大的城市复原力方面发挥着至关重要但往往被忽视的作用。本研究采用Q方法学和定性方法，调查了人口稠密的新加坡城市国家参与社区堆肥的个人看法。Q研究确定了三种不同的动机“角色”的优先顺序：(a)行动能力，(b)个人满意度和成长，以及(c)个人对环境和后代的责任感。参与者还分享了他们最初和继续参与的原因，并确定了关键的必要参与“促成因素”。根据调查结果，提出了建议，为多利益攸关方的政策、战略和治理安排提供信息，这些政策、战略和治理安排能够释放土壤管理的潜力，使其成为一项增强该国抵御力的战略。尽管研究结果侧重于新加坡的背景，但仍与各种利益攸关方相关，这些利益攸关方正试图促进建立城市韧性和履行对可持续发展目标和《巴黎协定》的承诺所需的多利益攸关方政策和实践。

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引用次数: 0

Urban fluxes for free: Estimating urban turbulent surface fluxes from crowdsourced meteorological canyon layer observations 免费城市通量：从众包气象峡谷层观测估计城市湍流地表通量

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-09 DOI: 10.1016/j.cacint.2025.100201

W. van der Meer, F. Zantinge, G.J. Steeneveld

Crowdsourcing and citizen science data have gained insight in the urban heat island effect and intra-urban heat patterns in many cities. However, while the urban energy balance is key in understanding the urban climate, professional urban surface flux measurements are relatively scarce. Here we develop a method to estimate urban fluxes of sensible heat, latent heat and momentum using solely crowdsourced temperature, humidity and wind speed observations in the urban canopy through Netatmo amateur weather stations. Also, the spatial variance of temperatures recorded in a network of Netatmo stations (varT) appears to be a good predictor for the incoming solar radiation. The proposed flux method is evaluated against eddy covariance flux estimates in Amsterdam (The Netherlands), and appears to have a median absolute error of 46.3

{Wm}^{- 2}

and 22.8

{Wm}^{- 2}

for sensible and latent heat flux respectively. When applying varT these values drop to 30.5 and 17.5

{Wm}^{- 2}

respectively. These scores compare well with schemes driven by professional observations. Hence, we offer a meaningful flux scheme that runs purely on free observations.

众包和公民科学数据已经深入了解了许多城市的城市热岛效应和城市内部的热量模式。然而，虽然城市能量平衡是理解城市气候的关键，但专业的城市地表通量测量相对较少。本文提出了一种估算城市感热、潜热和动量通量的方法，该方法仅使用Netatmo业余气象站在城市冠层中进行的众包温度、湿度和风速观测。此外，Netatmo站网（varT）记录的空间温度变化似乎是入射太阳辐射的一个很好的预测指标。根据荷兰阿姆斯特丹的涡动相关通量估计对所提出的通量方法进行了评估，对感热通量和潜热通量的中位数绝对误差分别为46.3 Wm−2和22.8 Wm−2。当应用varT时，这些值分别下降到30.5和17.5 Wm−2。这些分数与由专业观察得出的方案相比还算不错。因此，我们提供了一个完全基于自由观测的有意义的通量方案。

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引用次数: 0

Nonlinear effect of urban visual environment on residents’ psychological perception——An analysis based on XGBoost and SHAP interpretation model 城市视觉环境对居民心理感知的非线性影响——基于XGBoost和SHAP解释模型的分析

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-07 DOI: 10.1016/j.cacint.2025.100202

Jiacong Zhu , Shuqing Wang , Hui Ma , Tianai Shan , Deze Xu , Foyou Sun

Mental health issues have become a significant factor affecting residents’ lives and societal development. Studying the relationships between the urban visual environments and residents’ psychological perceptions can significantly improve residents’ mental health. This study employed the DeepLab-v3 deep learning model via semantic segmentation on street view images of the main urban area of Lanzhou, China to obtain eight urban visual environment indicators. A generative adversarial model was used to score the psychological perceptions of street-view images, and six psychological perception datasets were then obtained using a random forest model. Using the XGBoost and SHAP models, this study analyzed the key indicators, impact mechanisms, and optimal thresholds of the urban visual environment on psychological perception. This study identified comprehensive psychological perceptions and highlighted the most crucial indicators.

The results showed that sky openness, green view index, sidewalk ratio, and transportation facilities ratio were the core indicators of the urban visual environment affecting comprehensive psychological perception. A nonlinear relationship exists between urban visual environments and psychological perceptions. The thresholds for the green view index to enhance safety and beauty perception are 0–0.1 and 0.1–0.2, respectively. The thresholds for the sidewalk ratio to enhance safety perception and suppress boredom perception were 0–0.019 and 0–0.0125, respectively. The thresholds for sky openness to enhance wealth, vitality, and beauty perceptions are 0.5–0.7, 0.45–0.7, and 0.4–0.6, respectively. The threshold for the pedestrian ratio to enhance vitality perception was 0–0.001. The thresholds for the transportation facilities ratio to suppress depression and boredom perceptions were 0–0.01. The optimal thresholds for positively impacting comprehensive psychological perception were 0.5–0.6 for sky openness, 0–0.0125 for sidewalk ratio, and 0–0.01 for transportation facilities ratio, respectively. These findings provide theoretical support for incorporating psychological perception needs and green view index into planning and management. Additionally, they provide threshold recommendations for urban street design guidelines.

心理健康问题已成为影响居民生活和社会发展的重要因素。研究城市视觉环境与居民心理感知的关系，可以显著改善居民的心理健康状况。本研究采用DeepLab-v3深度学习模型，对中国兰州市主城区街景图像进行语义分割，得到8项城市视觉环境指标。采用生成对抗模型对街景图像的心理感知进行评分，并采用随机森林模型获得6个心理感知数据集。运用XGBoost和SHAP模型，分析了城市视觉环境对心理感知的关键指标、影响机制和最佳阈值。这项研究确定了全面的心理感知，并强调了最关键的指标。结果表明，天空开阔度、绿色景观指数、人行道比率和交通设施比率是影响城市视觉环境综合心理感知的核心指标。城市视觉环境与心理感知之间存在非线性关系。绿色景观指数提升安全性和美感的阈值分别为0-0.1和0.1-0.2。人行道比例增强安全感知和抑制无聊感知的阈值分别为0-0.019和0-0.0125。天空开放对财富、活力和美丽感知的阈值分别为0.5-0.7、0.45-0.7和0.4-0.6。行人比例增强活力感知的阈值为0-0.001。交通设施比例抑制抑郁和无聊感知的阈值为0 ~ 0.01。对综合心理感知产生正向影响的最优阈值分别为：天空开阔度0.5 ~ 0.6、人行道比例0 ~ 0.0125、交通设施比例0 ~ 0.01。研究结果为将心理感知需求和绿色景观指数纳入规划管理提供了理论支持。此外，它们还为城市街道设计指南提供了阈值建议。

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引用次数: 0

Dynamic changes and drives of surface urban heat islands in China 中国地表城市热岛的动态变化及其驱动因素

IF 3.9 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-05-06 DOI: 10.1016/j.cacint.2025.100203

Qiumeng Zhang, Baoquan Jia, Tong Li, Yarong Yang, Youxin Fang

Under the backdrop of rapid urbanization and global warming, urban environments have undergone significant changes, with the one of the most pronounced being the urban heat island effect. This phenomenon can disrupt the functions of urban ecosystems, affect residents’ comfort and health, and even pose life-threatening risks. existing research has predominantly focused on developed cities during urbanization, often overlooking smaller towns. As urbanization accelerates, the urban heat island effect is becoming increasingly pronounced in medium and small cities. Therefore, investigating the urban heat island effect in small and medium-sized cities can provide reliable data for long-term monitoring of various levels of urbanization across China, which is crucial for developing green, low-carbon, and livable ecological cities. This study leveraged long-term MODIS land surface temperature data, delving into the temporal variations and spatial patterns of surface urban heat island intensity (SUHII) across 1444 counties in China from both annual and seasonal time scales, as well as from national and climatic zone spatial dimensions. Meanwhile, the primary reasons influencing SUHII changes were investigated. The results indicated that a significant upward trend in SUHII nationwide, with the exception for winter, and the most rapid increase was observed in spring. In different climatic zones, the mid-temperate, warm temperate, and northern subtropical zones experienced notable growth in spring and autumn, while the mid-subtropical to marginal tropical zones demonstrated a pronounced rise in all seasons. Furthermore, weak hot islands dominated in China, except in winter, although their proportion declined over time. Strong and moderate hot islands were on the rise, primarily in the south of the Qinling-Huaihe line at 34°N. Winter was mainly characterized by no clear cold/hot islands, concentrated in the warm temperature and northern subtropics, with weak hot islands expanding southward into temperature regions. Besides, over the 20 years, approximately 47 % of cities maintained stable cold/hot island levels, while 53 % underwent transitions, predominantly hot island level conversions. In addition, natural factors such as precipitation and relative humidity played a critical role in SUHII changes, alongside an increasing impact of aerosol optical depth and white-sky albedo in the last decade.

在快速城市化和全球变暖的背景下，城市环境发生了显著变化，其中最显著的变化是城市热岛效应。这种现象会破坏城市生态系统的功能，影响居民的舒适和健康，甚至造成危及生命的风险。现有的研究主要集中在城市化过程中的发达城市，往往忽视了小城镇。随着城市化进程的加快，城市热岛效应在中小城市日益突出。因此，研究中国中小城市的城市热岛效应，可以为中国不同城市化水平的长期监测提供可靠的数据，对于建设绿色、低碳、宜居的生态城市至关重要。本研究利用MODIS长期地表温度数据，从年和季节两个时间尺度，以及国家和气候带空间维度，深入研究了中国1444个县地表城市热岛强度（SUHII）的时空变化和空间格局。同时，分析了影响SUHII变化的主要原因。结果表明：除冬季外，全国SUHII呈显著上升趋势，春季上升最快；在不同的气候带中，中温带、暖温带和北亚热带在春季和秋季都有明显的增长，而中亚热带至热带边缘区在所有季节都有明显的增长。此外，除冬季外，弱热岛在中国占主导地位，但其比例随着时间的推移而下降。强、中热岛呈上升趋势，主要集中在秦淮线以南34°N。冬季以冷热岛为主，冷热岛主要集中在暖温带和北副热带，弱热岛向南扩展到温带地区。此外，在过去的20年中，约47%的城市保持稳定的冷/热岛水平，而53%的城市经历了过渡，主要是热岛水平的转换。此外，降水和相对湿度等自然因子在近10年的SUHII变化中发挥了关键作用，气溶胶光学深度和白天反照率的影响也在增加。

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引用次数: 0