City and Environment Interactions最新文献_第6页

Exploring computational fluid dynamics to assess the role of vegetated planters in urban canyon microclimate regulation 探索计算流体动力学来评估植被种植在城市峡谷小气候调节中的作用

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-09-13 DOI: 10.1016/j.cacint.2025.100246

Martina Garcia de Cezar , Séverine Tomas , Bruno Cheviron , Laurent Aprin

Accurately modelling urban microclimates is essential for developing effective mitigation strategies against urban overheating. This study assesses the potential of ANSYS Fluent to simulate an experimental urban canyon with vegetated planters, using three different simulation methods. The analysis focuses on accuracy, operational suitability, and an improved understanding of the physical mechanisms operating at the scale of an urban canyon. Numerical results related to radiative, thermal, and aerodynamic fluxes, are evaluated based on (i) experimental data obtained from a dense network of sensors and (ii) the physical consistency obtained in the spatial distribution of the variables analysed. Despite some discrepancies in spatial and temporal variations, the model demonstrated strong agreement with experimental data, with absolute errors in air temperature and relative humidity below 3 % on average (maximum 11 %). Radiation, as the most sensitive factor for daytime thermal comfort variation in the study area, highlights the importance of improving radiative exchange in the proposed models. While certain software limitations require user-defined functions, such as representation of average radiant temperature, thermal comfort indices and multiple vegetation heat source terms, the study underscores the tool’s capacity to generate detailed and high-resolution microclimate data. This rich numerical database improves our understanding of urban heat dynamics, paving the way for more efficient urban climate solutions.

准确模拟城市小气候对于制定有效的缓解城市过热战略至关重要。本研究通过三种不同的模拟方法，评估了ANSYS Fluent模拟有植物种植的实验性城市峡谷的潜力。分析的重点是准确性、操作适用性，以及对城市峡谷规模下运行的物理机制的更好理解。与辐射、热和空气动力通量有关的数值结果是根据(i)从密集的传感器网络获得的实验数据和（ii）所分析变量的空间分布所获得的物理一致性进行评估的。尽管在时空变化方面存在一些差异，但该模式与实验数据非常吻合，空气温度和相对湿度的绝对误差平均在3%以下（最大误差为11%）。辐射作为研究区日间热舒适变化的最敏感因子，在所提出的模型中强调了改善辐射交换的重要性。虽然某些软件限制需要用户自定义功能，如平均辐射温度的表示、热舒适指数和多个植被热源项，但研究强调了该工具生成详细和高分辨率小气候数据的能力。这个丰富的数值数据库提高了我们对城市热动力学的理解，为更有效的城市气候解决方案铺平了道路。

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引用次数: 0

Are soil conservation and “No Net Land Take” suitable for urban development? modeling and assessment in two French cases 水土保持和“不净占用土地”是否适合城市发展？两个法国案例的建模和评估

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-09-13 DOI: 10.1016/j.cacint.2025.100243

Jean-Philippe Antoni , Tudal Sinsin , Igor Agbossou , Gilles Vuidel , Edouard Patault

The No Net Land Take (NNLT) policy seeks to halt the expansion of urbanised land to preserve soil quality and biodiversity. In France, this involves achieving zero net increase in artificial surfaces by 2050, with a mid-term objective of halving land take by 2030. This study examines the implications of NNLT for urban development and environmental preservation through a case study of two southeastern French territories: Grand Rovaltain and Aire Gapençaise. A data-driven cellular automata (CA) simulation model is employed to explore multiple development scenarios. This model integrates soil quality classifications (from 1 to 5) to assess the spatial dynamics of land use under NNLT constraints. The results indicate that while the policy restricts the spatial distribution of new developments, it does not inhibit overall housing and economic growth. Instead, development pressures tend to concentrate in rural and suburban transition zones, particularly those already vulnerable to sprawl. Soil quality thresholds significantly shape the spatial allocation of new growth, reinforcing the role of environmental parameters in guiding sustainable urban planning. The study offers three main contributions. First, it demonstrates the effectiveness of CA-based models in visualising land use outcomes under ecological constraints. Second, it highlights the potential to reconcile socio-economic development with environmental protection. Third, it stresses the importance of territorial dialogue to mitigate spatial inequalities that may emerge from the rigid application of NNLT policy. Overall, the study underscores the value of simulation-based planning tools in informing land use decisions and balancing competing territorial objectives under ambitious sustainability frameworks.

无净土地占用（NNLT）政策旨在阻止城市化土地的扩张，以保护土壤质量和生物多样性。在法国，这包括到2050年实现人工地面零净增长，到2030年将土地占用减半的中期目标。本研究通过对法国东南部两个地区的案例研究，考察了NNLT对城市发展和环境保护的影响：大Rovaltain和Aire gapenaise。采用数据驱动的元胞自动机（CA）仿真模型来探索多种开发场景。该模型整合了土壤质量分类（从1到5），以评估NNLT约束下土地利用的空间动态。结果表明，该政策虽然限制了新开发项目的空间分布，但并未抑制总体住房和经济增长。相反，发展压力往往集中在农村和郊区的过渡地带，特别是那些已经很容易蔓延的地区。土壤质量阈值显著地塑造了新生长的空间分配，强化了环境参数在指导可持续城市规划中的作用。这项研究提供了三个主要贡献。首先，它证明了基于ca的模型在可视化生态约束下土地利用结果方面的有效性。第二，它突出了协调社会经济发展与环境保护的潜力。第三，它强调了领土对话的重要性，以减轻严格执行NNLT政策可能产生的空间不平等。总体而言，该研究强调了在雄心勃勃的可持续发展框架下，基于模拟的规划工具在为土地利用决策提供信息和平衡竞争性领土目标方面的价值。

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引用次数: 0

Willingness to pay for urban heat Island mitigation through increased tree coverage: A contingent valuation study in Accra and Kumasi, Ghana 通过增加树木覆盖率支付城市热岛缓解费用的意愿：在加纳阿克拉和库马西进行的条件评估研究

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-09-11 DOI: 10.1016/j.cacint.2025.100242

Prince Owusu, Benjamin Wiafe Asare, Bridget Aikins, Prince Yakohene Dogbe, Derrick Werekoh Asaah

Urban areas in Ghana are increasingly affected by the Urban Heat Island (UHI) phenomenon, driven by rapid urbanization and declining green spaces. This study examined public perceptions, awareness, and willingness to pay (WTP) for urban heat island mitigation through increased tree coverage in Accra and Kumasi. The study utilized a cross-sectional mixed-methods approach and incorporated the Contingent Valuation Method (CVM) to assess respondents WTP to mitigate the UHI. A structured questionnaire was administered to a total of 240 participants to gather their responses. Findings revealed that majority of the respondents acknowledged rising urban temperatures and viewed urban trees as important in temperature regulation. Approximately 88.75 % of respondents expressed willingness to pay for improved tree coverage, with a mean WTP of GHȼ26.78 (=$2.04, May 2025 exchange rate). Factors such as age, household size, and occupation negatively and significantly influenced WTP, while income had a positive effect. However, some respondents stated unemployment, mistrust in fund use, and poor tree maintenance as key barriers to contributing financially. These findings highlight the potential for citizen-supported financing mechanisms to enhance urban greening initiatives. Integrating such willingness into urban policy can strengthen climate resilience, support nature-based solutions, and advance global sustainability commitments, especially SDG 11 (Sustainable Cities and Communities), SDG 13 (Climate Action), and SDG 15 (Life on Land).

在快速城市化和绿地减少的推动下，加纳城市地区日益受到城市热岛现象的影响。本研究调查了阿克拉和库马西通过增加树木覆盖率来缓解城市热岛的公众观念、意识和支付意愿。该研究采用了横截面混合方法，并结合了条件评估方法（CVM）来评估受访者的WTP以减轻UHI。共有240名参与者接受了一份结构化的问卷调查，以收集他们的回答。调查结果显示，大多数受访者承认城市气温上升，并认为城市树木对温度调节很重要。约88.75%的受访者表示愿意为改善树木覆盖率付费，平均WTP为GHȼ26.78（按2025年5月汇率计算= 2.04美元）。年龄、家庭规模、职业等因素对WTP有显著负向影响，而收入对WTP有正向影响。然而，一些受访者表示，失业、对资金使用的不信任和树木维护不善是他们在经济上做出贡献的主要障碍。这些发现强调了公民支持的融资机制在加强城市绿化举措方面的潜力。将这种意愿纳入城市政策可以增强气候适应能力，支持基于自然的解决方案，并推进全球可持续性承诺，特别是可持续发展目标11（可持续城市和社区）、可持续发展目标13（气候行动）和可持续发展目标15（陆地生命）。

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引用次数: 0

Walkability under the influence of extreme temperatures: the impact of climate change on outdoor thermal discomfort in Saudi Arabia 极端温度影响下的步行性：气候变化对沙特阿拉伯室外热不适的影响

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-09-02 DOI: 10.1016/j.cacint.2025.100241

Nisreen Abuwaer , Safi Ullah , Buri Vinodhkumar , Sami G. Al-Ghamdi

Summer is ideal for outdoor activities like walking; however, as extreme heat rises, these pleasant walks may gradually be overtaken by heat stress, compromising pedestrians’ comfort and safety at risk. This study investigates the implications of climate change on pedestrian thermal comfort by estimating future changes in thermal discomfort days and their potential impacts on walkability across Saudi Arabia and its major cities. The study uses the outputs of 27 bias-corrected high-resolution models from NASA’s NEX-GDDP-CMIP6 program to estimate projected changes in discomfort days with different thermal stress ranges during the near-future (2021–2040), mid-future (2041–2060), and far-future (2081–2100) periods under SSP1-2.6, SSP2-4.5, and SSP5-8.5 scenarios. The study also estimates future urban population exposure to discomfort days in Saudi Arabia under the selected SSP scenarios. Future projections under various SSPs indicate a significant increase in very uncomfortable days across most parts of Saudi Arabia, with impacts intensifying inland by the end of the 21st century. Coastal regions, though expected to experience fewer uncomfortable days, will see an increase in days falling into higher discomfort ranges. Under the SSP5-8.5 scenario, the projected rise in extremely uncomfortable days, particularly across coastal and inland areas of Saudi Arabia, is predicted to substantially affect walkability and limit outdoor activity. In terms of urban environments, Jeddah, Dammam, and Madinah are projected to experience the highest levels of discomfort, reaching up to 35 °C under the SSP5-8.5 scenario by 2100. The projected urban population exposure is likely to be 1–8 million people-days in Saudi Arabia, with coastal cities experiencing the highest exposure in the future periods, particularly under high-emission scenarios. Our findings emphasize the critical need for adaptive urban planning to ensure outdoor spaces remain accessible and comfortable for pedestrians in a warming climate.

夏天是户外活动的理想季节，比如散步；然而，随着极端高温的上升，这些愉快的散步可能会逐渐被热应激所取代，从而危及行人的舒适和安全。本研究通过估算沙特阿拉伯及其主要城市未来热不适天数的变化及其对步行性的潜在影响，探讨了气候变化对行人热舒适的影响。该研究利用NASA nex - gdp - cmip6项目27个经过偏倚校正的高分辨率模型的输出，估算了在SSP1-2.6、SSP2-4.5和SSP5-8.5情景下，近未来（2021-2040）、中未来（2041-2060）和远未来（2081-2100）不同热应力范围下的不适日数的预估变化。该研究还估计了在选定的SSP情景下，沙特阿拉伯未来城市人口暴露于不适天数的情况。各种ssp的未来预测表明，沙特阿拉伯大部分地区非常不舒服的天气将显著增加，到21世纪末，对内陆的影响将加剧。沿海地区，虽然预计会经历更少的不舒服的日子，但会有更多的日子陷入更高的不适范围。在SSP5-8.5的情景下，预计极端不舒服天气的增加，特别是在沙特阿拉伯的沿海和内陆地区，预计将严重影响步行能力并限制户外活动。在城市环境方面，吉达、达曼和麦地那预计将经历最严重的不适，在SSP5-8.5情景下，到2100年将达到35°C。预计沙特阿拉伯的城市人口暴露量可能为100万至800万人日，沿海城市在未来一段时间内的暴露量最高，特别是在高排放情景下。我们的研究结果强调了适应性城市规划的迫切需要，以确保在气候变暖的情况下，室外空间对行人保持可达性和舒适性。

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引用次数: 0

Textile solar shading systems for reducing the negative impacts of solar radiation in urban areas: a critical review 纺织遮阳系统减少太阳辐射在城市地区的负面影响：一个重要的审查

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-08-26 DOI: 10.1016/j.cacint.2025.100240

Michele Rocca , Giacomo Salvadori , Francesco Leccese , Fabio Bisegna

Climate change is bringing attention to low-impact mitigation solutions such as textile solar shading systems that could be more widely used or at least taken into consideration when taking actions to improve the urban environment. In fact, these systems have great potential, especially in historic centres and in areas with high population density. The main aim of this study is to provide a clear and complete picture on the use of textile solar shading in urban areas, critically analysing the most interesting literature with special attention to the impact on the liveability and usability of the urban environment and on the possible energy saving associated with air conditioning, in different climatic locations. From the collection of the research activities, the main considerations for a better design of this type of solar shading systems were summarized. Furthermore, in support of critical analysis of literature, quantitative indicators relating to the impact of textile solar shading systems on the reduction of the summer heat load on buildings, on the reduction of pedestrian thermal stress and on the reduction of pedestrian exposure to UV radiation were proposed and calculated in the three Mediterranean locations (Rome, Athens, Tripoli). From the simplified evaluations proposed, considering a perfectly horizontal and continuous sun sail, with a transmission coefficient equal to 0.1, compared to the case of absence of solar shading systems, an average reduction in the incoming heat flow between 50 % and 60 %; an average reduction in the thermal stress index between 10 % and 40 %; and a reduction in the Standard Erythemal Dose (SED) of nearly 90 % were obtained, for the aforementioned locations.

气候变化正在引起人们对诸如纺织品遮阳系统等低影响缓解解决方案的关注，这些解决方案可以更广泛地使用，或者至少在采取行动改善城市环境时予以考虑。事实上，这些系统具有巨大的潜力，特别是在历史中心和人口密度高的地区。本研究的主要目的是为城市地区纺织品遮阳的使用提供一个清晰而完整的图景，批判性地分析最有趣的文献，特别关注城市环境的宜居性和可用性的影响，以及在不同气候地区与空调相关的可能的节能。从研究活动的收集中，总结了设计这类遮阳系统的主要考虑因素。此外，为了支持对文献的批判性分析，提出并计算了三个地中海地区（罗马、雅典、的黎波里）纺织品遮阳系统在减少建筑物夏季热负荷、减少行人热应力和减少行人暴露于紫外线辐射方面的影响的定量指标。从所提出的简化评估来看，考虑到一个完全水平和连续的太阳帆，其透射系数等于0.1，与没有遮阳系统的情况相比，平均减少了50%到60%的传入热流；热应力指数平均降低10% ~ 40%；在上述部位，标准红斑剂量（SED）减少了近90%。

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引用次数: 0

Air pollution exceedance events in Melbourne and Sydney, Australia, between 2000 and 2024 2000年至2024年间澳大利亚墨尔本和悉尼的空气污染超标事件

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-08-22 DOI: 10.1016/j.cacint.2025.100239

Simon William Mkasimongwa , Stephen J. Livesley , Robert G. Ryan , Robyn Schofield

Air pollution events pose significant challenges to public health in Melbourne and Sydney, Australia’s most populous cities. This study evaluates publicly available data to understand the frequency of air pollution exceedance events beyond World Health Organization (WHO) guidelines, as well as national and state standards. The air quality of both cities generally complies with national standards but consistently fails to meet WHO air quality guidelines. Since 2000, Sydney recorded single-pollutant events on 43% of monitored days and multi-pollutant events on 14% of monitored days. In Melbourne, single-pollutant events were recorded on 42% of monitored days, and multi-pollutant events on 8%. In Sydney, NO₂ exceeded WHO guidelines on 52% of monitored days, PM_2.5 on 13%, PM₁₀ on 4%, and O₃ on 6%. In Melbourne, NO₂ exceeded on 47% of monitored days, PM_2.5 on 4%, PM₁₀ on 6%, and O₃ on 2%. Evaluating long-term, city-scale air quality is challenging due to significant variations in spatial and temporal data coverage, especially in Melbourne. Many monitoring stations have limited temporal coverage and do not consistently monitor all key pollutants, meaning the true extent of air pollution is likely not fully captured. Since 2017, Melbourne has had only five active monitoring stations, compared to over 15 in Sydney. This study demonstrates the urgent need for expanded air pollution monitoring networks in Australia’s largest cities and highlights the need for ongoing research into the impacts of multi- as well as single-pollutant exceedance events.

在澳大利亚人口最多的城市墨尔本和悉尼，空气污染事件对公众健康构成了重大挑战。本研究评估了公开可用的数据，以了解超出世界卫生组织（WHO）准则以及国家和州标准的空气污染超标事件的频率。这两个城市的空气质量总体上符合国家标准，但始终未能达到世卫组织的空气质量准则。自2000年以来，悉尼记录的单一污染物事件占监测天数的43%，多污染物事件占监测天数的14%。在墨尔本，42%的监测天数记录了单一污染物事件，8%的监测天数记录了多重污染物事件。在悉尼，有52%的监测天数二氧化氮超标，PM2.5超标13%，PM10超标4%，O3超标6%。在墨尔本，二氧化氮超标天数占监测天数的47%，PM2.5超标天数占4%，PM10超标天数占6%，臭氧超标天数占2%。由于空间和时间数据覆盖范围的显着变化，特别是在墨尔本，评估长期城市尺度的空气质量具有挑战性。许多监测站的时间覆盖范围有限，并没有持续监测所有主要污染物，这意味着可能无法完全捕捉到空气污染的真实程度。自2017年以来，墨尔本只有5个活跃监测站，而悉尼有超过15个。这项研究表明，迫切需要在澳大利亚最大的城市扩大空气污染监测网络，并强调需要对多种和单一污染物超标事件的影响进行持续研究。

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引用次数: 0

Modeling nitrogen dioxide concentrations using citizen science data: The case of the Brussels-Capital Region 利用公民科学数据模拟二氧化氮浓度：以布鲁塞尔-首都地区为例

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-08-21 DOI: 10.1016/j.cacint.2025.100236

Patrick Bogaert , Noémie Huvelle , Axel Briffault , Olivier Brasseur

Air pollution caused by NO

_{2}

emissions related to traffic is a major environmental issue in the Brussels-Capital region. Using a large set of measurements collected from a citizen science campaign, this paper shows how such data help us to get an overview of the spatial distribution of NO

_{2}

levels over the region. Using two land use regression techniques, these levels were related to spatial proxies collected at the measurement locations. Comparing the proxies selected by each regression method offers deeper insights into the NO

_{2}

-proxies relationships and helps identify proxies that may have been overlooked in a simpler multilinear regression model. Results show that the multiple linear regression model is able to explain a major part of the variance of the data, while random forest regression performs slightly better, with performances that are on par with those found in the literature. However, both models tend to underestimate high concentrations that are occurring locally. Thanks to a comparison with the prediction results from a physics-based model, this could be related to the quality of the input traffic data, that are expected to play a major role as most of nitrogen oxides emissions in the Brussels-Capital region originate from road traffic.

与交通有关的二氧化氮排放造成的空气污染是布鲁塞尔首都地区的一个主要环境问题。本文利用从公民科学运动中收集的大量测量数据，展示了这些数据如何帮助我们对该地区二氧化氮水平的空间分布进行概述。利用两种土地利用回归技术，这些水平与在测量地点收集的空间代用指标相关。比较每种回归方法选择的代理可以更深入地了解no2 -代理关系，并有助于识别在更简单的多元线性回归模型中可能被忽略的代理。结果表明，多元线性回归模型能够解释数据的大部分方差，而随机森林回归的表现略好，其性能与文献中的表现相当。然而，这两种模式都倾向于低估局部发生的高浓度。通过与基于物理的模型的预测结果进行比较，这可能与输入交通数据的质量有关，由于布鲁塞尔-首都地区的大部分氮氧化物排放来自道路交通，预计交通数据将发挥主要作用。

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引用次数: 0

Beyond greens: Urban development and green space availability in residential areas of Damascus 超越绿色：大马士革住宅区的城市发展和绿色空间可用性

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-08-15 DOI: 10.1016/j.cacint.2025.100235

Rahaf Yousef, István Valánszki

Green spaces (GS) promote positive people–place relationships, especially in residential areas. Availability of GS in Middle Eastern cities has been influenced by their unique political, socio-economic, cultural and environmental conditions. Despite this, research on GS availability in relation to city development context is still limited. This study examines the patterns of GS availability in Damascus’s residential areas and analyses its correlation with these areas’ development context. It classifies districts by urbanisation context and GS metrics, using content analysis, secondary data and NDVI analysis. Results showed that GS availability in Damascus is significantly influenced by urban history, geography and political-economic systems, underscoring current urban challenges faced by other major Middle Eastern cities. In Damascus, district groups were highly influenced by their historical background from the pre-mid-20th century and the political-economic system that developed later. The study revealed significant disparities between planned northern and western districts with better GS availability, and informal eastern and southern ones. These findings highlight the need for context-sensitive, multidisciplinary strategies to address GS disparities in Middle Eastern urban residential areas, including governance tools such as local GS councils and equity audits, to promote equitable access and strengthen people–place relationships.

绿色空间（GS）促进积极的人与地关系，特别是在住宅区。中东城市的GS供应受到其独特的政治、社会经济、文化和环境条件的影响。尽管如此，关于城市发展背景下GS可用性的研究仍然有限。本研究考察了大马士革居民区的GS可用性模式，并分析了其与这些地区发展背景的相关性。它使用内容分析、二手数据和NDVI分析，根据城市化背景和GS指标对地区进行分类。结果表明，大马士革的GS可用性受到城市历史、地理和政治经济制度的显著影响，这凸显了其他中东主要城市当前面临的城市挑战。在大马士革，地区团体深受20世纪前中期的历史背景和后来发展起来的政治经济制度的影响。该研究显示，规划好的北部和西部地区具有较好的GS供应，而非正式的东部和南部地区则存在显著差异。这些研究结果突出表明，需要采取对具体情况敏感的多学科战略来解决中东城市住宅区的人口普查差距问题，包括地方人口普查委员会和公平审计等治理工具，以促进公平获取和加强人与地的关系。

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引用次数: 0

Assessment of surface water quality using advanced statistical techniques around an urban landfill: A multi-parameter analysis 利用先进的统计技术评估城市垃圾填埋场周围的地表水质量：多参数分析

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-08-14 DOI: 10.1016/j.cacint.2025.100237

Nazmul Huda , Tasnim Ahmed , Mahmud Hussain Masum , Nafis Faruque , Md. Shahinoor Islam

The present experimental research focuses on surface water quality adjacent to an urban landfill, Dhaka, Bangladesh, where collected samples were analysed in laboratories by assessing 19 physicochemical parameters, and advanced statistical techniques were performed to establish a Water Quality Index (WQI). Providing valuable insights into the spatial extent and characteristics of surface water pollution, the study intends to support local authorities in identifying high-risk zones for targeted water quality and in developing policies for monitoring waterbodies to ensure sustainable landfill management. Results indicated moderate total dissolved solids (TDS) (about 400 mg/L), low dissolved oxygen (DO) (less than 4 mg/L), and significant pollutant variability. Clustering indicated that the first one consisted of samples collected nearer to the landfill, exhibiting excessive chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total suspended solids (TSS), while the second one contained samples collected farther away from the landfill, demonstrating superior water quality. The WQI categorized three samples as very bad 405 (WQI < 31) and seven as bad (WQI between 31 and 51.9), with the lowest value recorded as a WQI of 1.85 from a sewer. Principal component analysis (PCA) identified five principal components (PCs), with PC1, PC2, and PC3 accounting for 38.5 %, 21.38 %, and 16.35 of the total variance, respectively. These findings indicate the necessity for immediate measures: the establishment of engineered landfills, leachate treatment, and the enforcement of more stringent waste restrictions to mitigate health and environmental hazards around the urban landfill. The study’s scientific significance resides in its provision of a comprehensive WQI and specific pollution data, thereby augmenting the understanding of urban landfill effects on water quality in densely populated areas. The study has the potential to guide the development of policies for sustainable waste management, presenting a framework for reducing urban surface water pollution.

目前的实验研究侧重于孟加拉国达卡城市垃圾填埋场附近的地表水质量，在实验室中通过评估19个物理化学参数对收集的样本进行分析，并使用先进的统计技术来建立水质指数（WQI）。该研究为地表水污染的空间范围和特征提供了有价值的见解，旨在支持地方当局确定目标水质的高风险区域，并制定监测水体的政策，以确保可持续的垃圾填埋场管理。结果表明，该地区总溶解固形物（TDS）适中（约400 mg/L），溶解氧（DO）较低（小于4 mg/L），污染物变异性显著。聚类结果表明，第一个样本采集于离垃圾填埋场较近的地方，其化学需氧量（COD）、生化需氧量（BOD）和总悬浮物（TSS）超标；第二个样本采集于离垃圾填埋场较远的地方，其水质较好。WQI将三个样本分类为非常糟糕的405 (WQI <；31)和7（水质指数介于31至51.9之间），其中最低的污水渠的水质指数为1.85。主成分分析（PCA）鉴定出5个主成分（PCs），其中PC1、PC2和PC3分别占总方差的38.5%、21.38%和16.35%。这些发现表明有必要立即采取措施：建立工程垃圾填埋场，进行渗滤液处理，并实施更严格的废物限制，以减轻城市垃圾填埋场周围的健康和环境危害。这项研究的科学意义在于它提供了一个全面的世界水质指数和具体的污染数据，从而增加了对人口稠密地区城市垃圾填埋场对水质影响的认识。这项研究有可能指导可持续废物管理政策的制定，提出减少城市地表水污染的框架。

{"title":"Assessment of surface water quality using advanced statistical techniques around an urban landfill: A multi-parameter analysis","authors":"Nazmul Huda , Tasnim Ahmed , Mahmud Hussain Masum , Nafis Faruque , Md. Shahinoor Islam","doi":"10.1016/j.cacint.2025.100237","DOIUrl":"10.1016/j.cacint.2025.100237","url":null,"abstract":"<div><div>The present experimental research focuses on surface water quality adjacent to an urban landfill, Dhaka, Bangladesh, where collected samples were analysed in laboratories by assessing 19 physicochemical parameters, and advanced statistical techniques were performed to establish a Water Quality Index (WQI). Providing valuable insights into the spatial extent and characteristics of surface water pollution, the study intends to support local authorities in identifying high-risk zones for targeted water quality and in developing policies for monitoring waterbodies to ensure sustainable landfill management. Results indicated moderate total dissolved solids (TDS) (about 400 mg/L), low dissolved oxygen (DO) (less than 4 mg/L), and significant pollutant variability. Clustering indicated that the first one consisted of samples collected nearer to the landfill, exhibiting excessive chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total suspended solids (TSS), while the second one contained samples collected farther away from the landfill, demonstrating superior water quality. The WQI categorized three samples as <em>very bad</em> 405 (WQI < 31) and seven as <em>bad</em> (WQI between 31 and 51.9), with the lowest value recorded as a WQI of 1.85 from a sewer. Principal component analysis (PCA) identified five principal components (PCs), with PC1, PC2, and PC3 accounting for 38.5 %, 21.38 %, and 16.35 of the total variance, respectively. These findings indicate the necessity for immediate measures: the establishment of engineered landfills, leachate treatment, and the enforcement of more stringent waste restrictions to mitigate health and environmental hazards around the urban landfill. The study’s scientific significance resides in its provision of a comprehensive WQI and specific pollution data, thereby augmenting the understanding of urban landfill effects on water quality in densely populated areas. The study has the potential to guide the development of policies for sustainable waste management, presenting a framework for reducing urban surface water pollution.</div></div>","PeriodicalId":52395,"journal":{"name":"City and Environment Interactions","volume":"28 ","pages":"Article 100237"},"PeriodicalIF":3.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852162","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

The urban heat Island effect: A review on predictive approaches using artificial intelligence models 城市热岛效应：人工智能模型预测方法综述

IF 3.8 Q2 ENVIRONMENTAL SCIENCES

City and Environment Interactions

Pub Date : 2025-08-13 DOI: 10.1016/j.cacint.2025.100234

Ali Najah Ahmed , Nouar AlDahoul , Nurhanani A. Aziz , Y.F. Huang , Mohsen Sherif , Ahmed El-Shafie

With the global population now exceeding 8 billion and 4.5 billion of whom residing in urban areas, rapid urbanization has contributed to a range of environmental and ecological challenges, notably the Urban Heat Island (UHI) effect. According to statistical data, the ten hottest years on record occurred between 2013 and 2022, underscoring the urgency of addressing urban heat issues. This study provides a comprehensive review of research on the UHI effect, analysing and classifying studies that utilize a variety of input–output datasets. It also examines predictive methods used to estimate UHI intensity, categorizing them into conventional machine learning (ML) algorithms, deep learning (DL) models, and hybrid approaches. While conventional ML algorithms remain widely used, DL and hybrid models have shown superior performance in predictive accuracy. This review aims to enhance understanding of recent advancements in UHI prediction techniques, identify limitations in current methodologies, and propose directions for future research.

随着全球人口超过80亿，其中45亿人居住在城市地区，快速城市化带来了一系列环境和生态挑战，特别是城市热岛效应。统计数据显示，有记录以来最热的10年发生在2013年至2022年之间，凸显了解决城市高温问题的紧迫性。本研究全面回顾了关于城市热岛效应的研究，对利用各种投入产出数据集的研究进行了分析和分类。它还研究了用于估计UHI强度的预测方法，将它们分为传统的机器学习（ML）算法、深度学习（DL）模型和混合方法。虽然传统的机器学习算法仍然被广泛使用，但深度学习和混合模型在预测准确性方面表现出优异的性能。本综述旨在加强对热岛预测技术最新进展的理解，确定当前方法的局限性，并提出未来研究方向。

{"title":"The urban heat Island effect: A review on predictive approaches using artificial intelligence models","authors":"Ali Najah Ahmed , Nouar AlDahoul , Nurhanani A. Aziz , Y.F. Huang , Mohsen Sherif , Ahmed El-Shafie","doi":"10.1016/j.cacint.2025.100234","DOIUrl":"10.1016/j.cacint.2025.100234","url":null,"abstract":"<div><div>With the global population now exceeding 8 billion and 4.5 billion of whom residing in urban areas, rapid urbanization has contributed to a range of environmental and ecological challenges, notably the Urban Heat Island (UHI) effect. According to statistical data, the ten hottest years on record occurred between 2013 and 2022, underscoring the urgency of addressing urban heat issues. This study provides a comprehensive review of research on the UHI effect, analysing and classifying studies that utilize a variety of input–output datasets. It also examines predictive methods used to estimate UHI intensity, categorizing them into conventional machine learning (ML) algorithms, deep learning (DL) models, and hybrid approaches. While conventional ML algorithms remain widely used, DL and hybrid models have shown superior performance in predictive accuracy. This review aims to enhance understanding of recent advancements in UHI prediction techniques, identify limitations in current methodologies, and propose directions for future research.</div></div>","PeriodicalId":52395,"journal":{"name":"City and Environment Interactions","volume":"28 ","pages":"Article 100234"},"PeriodicalIF":3.8,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144866523","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