Yaxue Ren , Fei Feng , Mario Elia , Vincenzo Giannico , Giovanni Sanesi , Raffaele Lafortezza
{"title":"Understanding the coupling effect of multiple urban features on land surface temperature in Europe","authors":"Yaxue Ren , Fei Feng , Mario Elia , Vincenzo Giannico , Giovanni Sanesi , Raffaele Lafortezza","doi":"10.1016/j.ufug.2025.128723","DOIUrl":"10.1016/j.ufug.2025.128723","url":null,"abstract":"<div><div>Cities in Europe are facing significant challenges as rising temperatures exacerbate health risks, energy consumption, and environmental degradation. This study investigates the multiple features affecting land surface temperature (LST) across 780 European cities, categorized into eight macro-regions. The methodology involved utilizing SHAP values to interpret the results of a Random Forest model that evaluated the impact of individual urban features on LST. Additionally, the Generalized Additive Model (GAM) was employed to explore non-linear relationships between key urban features and LST, offering a deeper understanding of how specific features influence urban temperatures. The results highlight the important cooling effects of ecological attributes like tree height and evapotranspiration, particularly in warm regions (e.g., the Iberian Peninsula and Turkey). Conversely, urban structure elements like built-up volume were shown to increase LST. GAM analysis further revealed non-linear relationships, such as the diminishing returns of evapotranspiration (ET) on cooling in the Iberian Peninsula, where LST decreased sharply at ET < 3–4.5 mm/d but plateaued at higher values. These results emphasize the complexity of urban climate regulation, where ecological and built environments interact in diverse ways across different regions. This study underscores the importance of region-specific urban planning strategies that integrate both ecological and urban structure features to effectively mitigate the effects of urban heat. The findings offer actionable insights for policymakers seeking to enhance urban climate resilience and manage the growing challenges posed by global warming in European cities.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128723"},"PeriodicalIF":6.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How have community activation factors in community gardening changed after the COVID-19 Pandemic?","authors":"Soyoung Han, Dohun Kim","doi":"10.1016/j.ufug.2025.128724","DOIUrl":"10.1016/j.ufug.2025.128724","url":null,"abstract":"<div><div>The sustainability of community gardens depends on active engagement. This study examines how community activation factors in gardening changed before and after COVID-19, categorizing garden communities into three types: Multi-Layered Multi-Region (Type 1), Multi-Layered One-Region (Type 2), and One-Tier Multi-Region (Type 3). Before the pandemic, four major factors influenced activation: Gardening Programs, Regional/Local Cooperation Systems, Characteristics of Participants, and Local Participation Programs. After COVID-19, only three factors remained significant, with Facility/Space Design replacing participant characteristics and local engagement programs. Findings suggest a shift from socially interactive engagement to more independent, space-focused participation. Type 1 gardens emphasized facility design and regional cooperation, while Type 3 gardens prioritized structured gardening programs and expert collaboration. This study highlights the evolving role of community gardens in urban resilience and public health. It recommends adaptive garden space design, self-managed gardening models, and strengthened regional cooperation to ensure long-term sustainability.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128724"},"PeriodicalIF":6.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fouzia Hossain Oyshi , Erin Czelusniak , Rimsha Ahmed , Nanthaya Mira Verweij , Ashraful Arefeen , Amber Abrams , Kirsty Carden , Maya E. Carrasquillo
{"title":"An investigative analysis of grassroots environmental justice principles in green stormwater infrastructure in USA and RSA","authors":"Fouzia Hossain Oyshi , Erin Czelusniak , Rimsha Ahmed , Nanthaya Mira Verweij , Ashraful Arefeen , Amber Abrams , Kirsty Carden , Maya E. Carrasquillo","doi":"10.1016/j.ufug.2025.128721","DOIUrl":"10.1016/j.ufug.2025.128721","url":null,"abstract":"<div><div>The legacy of racism in both the United States of America and the Republic of South Africa, interwoven into policy and practices, continues to influence even the most basic infrastructural systems. One manifestation of this unfortunate fact is the injustice experienced by marginalized communities in the form of disproportionate flooding, contamination, and health concerns due to poor stormwater drainage. Attempting to act as a more environmentally conscious system, Green Stormwater Infrastructure (GSI) has the potential to ease some of these historic inequalities by adhering to environmental justice principles. This study compares GSI documents from the 25 most populous cities in South Africa and the United States to their respective environmental justice principles outlined by (in the USA) or drawn from (in RSA) each country’s grassroots organizations. The results show that the cities of both nations are not planning or executing the practice of GSI with significant consideration of the environmental justice that their citizens crave, inhibiting the construction of more just societies. Examining examples of GSI documents in both countries reveals the challenges of decision-making in the face of scarce resources and the need for modern and just infrastructure, highlighting issues of inequality on both global and national scales.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128721"},"PeriodicalIF":6.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Interactive mapping of allergenic urban street trees in Australia","authors":"D. Krwanji, AJM. Hopkins, K. Lemson, M. Hanson","doi":"10.1016/j.ufug.2025.128718","DOIUrl":"10.1016/j.ufug.2025.128718","url":null,"abstract":"<div><div>Tree pollen can be a persistent allergen for sensitised individuals, causing allergic rhinitis and asthmatic symptoms. Increased urbanisation results in larger populations living in cities and relying on urban greenspaces for recreation and associated ecosystem services, where the street landscapes are determined by urban planners. Urban forest strategies broadly divide planting choices based on biological functionality, climate resilience and environmental benefits but increasingly the associated physical and mental health impacts of urban vegetation are being considered. Here, we studied pollen allergenicity in four Australian cities by incorporating measures of allergenicity in existing street tree asset databases and visualising these using a simple and flexible mapping tool, the mapview package in R. <em>Olea europaea</em> (olive) and <em>Betula nigra</em> (river birch) were the most abundant trees with the greatest allergenic potential across all four cities, and hotspots of tree clusters with high allergenic potential could be easily visualised. The lack of allergenicity data for native Australian trees was also apparent, despite these comprising a large proportion of the urban street scapes. Incorporating allergenicity in mapview provides an interactive tool which is more easily interpretable for the public and urban landscape stakeholders than existing GIS based risk mapping techniques, and which can support decision making in future planting to avoid high concentrations of allergenic trees.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128718"},"PeriodicalIF":6.0,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhixin Liu , Ka Yuen Cheng , Marco Amati , C.Y. Jim , Chen Hua , Makoto Yokohari , Ross Cameron , Edward Ng
{"title":"Creating a thermally comfortable city through urban green infrastructure: An international review of greening policies","authors":"Zhixin Liu , Ka Yuen Cheng , Marco Amati , C.Y. Jim , Chen Hua , Makoto Yokohari , Ross Cameron , Edward Ng","doi":"10.1016/j.ufug.2025.128713","DOIUrl":"10.1016/j.ufug.2025.128713","url":null,"abstract":"<div><div>Urban green infrastructure has been recognized as a pertinent Nature-based Solution in urban heat mitigation and climate change adaptation. Greening efforts, especially in compact cities, face multiple constraints and challenges that require innovative justifications. To effectively improve urban greening, government agencies and local communities worldwide have devised diverse greening policies, which often include optimizing the cooling potential. This study comprehensively reviewed greening policies in 21 cities on five continents, analyzing how urban greening works as a strategy for moderating urban thermal environments. Information was gathered from portal websites and city authority documents. Targeted searches covered greening motivation and policy formulation, implementation, monitoring and evaluation. The cities' concerns and approaches to developing greening policies were evaluated through in-depth investigation and comparison. Four key themes were distilled from the review. (1) Political and economic motivation: raising awareness regarding the economic value of the thermal moderating effect of urban greening; (2) Policy refinement and formulation: considerations over the quantity and quality of tree canopies; (3) Policy feasibility and implementation: incorporating considerations of local climate features and climate change into practices; and (4) Policy monitoring and evaluation: promoting urban microclimate monitoring and greening assessment through the collaboration of governments, universities, businesses, the public and the environment. By offering a comprehensive understanding of greening policies by cities with high-quality governance, this review provides a snapshot of collective best practice intending to foster the scientific promotion of urban greening to fulfill the coupled objective of urban greening and urban cooling.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128713"},"PeriodicalIF":6.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Manuel Esperon-Rodriguez , Sally A. Power , Mark G. Tjoelker , Mahmuda Sharmin , Paul D. Rymer
{"title":"A nation-wide urban trial network of tree and shrub climate resilience","authors":"Manuel Esperon-Rodriguez , Sally A. Power , Mark G. Tjoelker , Mahmuda Sharmin , Paul D. Rymer","doi":"10.1016/j.ufug.2025.128720","DOIUrl":"10.1016/j.ufug.2025.128720","url":null,"abstract":"<div><div>Urban forests are widely recognised as a nature-based solution to mitigate the effects of climate change; however, urban forests are also vulnerable to climate change. Therefore, there is a need to improve species selection to ensure the delivery of ecosystem services by urban forests now and in the future. Research on the impacts of climate change on urban forests requires investigation to capture the complexities associated with species identity and growing conditions. Yet, such studies remain rare in urban contexts, highlighting the need for expanding collaborative research in cities. Here, we present a nation-wide urban trial network established across four states in Australia, showcasing stakeholder collaboration aimed at advancing urban forest research. The network consists of 11 standardised plantings of tree and/or shrub species aimed at testing species’ growth and performance (i.e., stress tolerance) in cities across a range of climatic conditions. To test these differences, we measured height and diameter relative growth rates (RGR) and leaf damage caused by stress at each site one month after planting (2018–2020) and at the end of the austral summer in 2024. We used generalised linear mixed-effects models for RGR and ordinal logistic regressions for leaf damage to test the effects of annual maximum temperature (T<sub>MAX</sub>) and the Pinna Combinative Index (<em>I</em><sub>P</sub>, a climate-drought index). By 2024, across all sites, we found 23 % of the originally planted individuals had died or were missing. We recorded significant differences in height and diameter RGR and leaf damage among sites, and <em>I</em><sub>P</sub> was significantly and negatively related to both RGR and leaf damage. The network serves as an example of how stakeholder collaboration can broaden the scope of urban forest research that evaluates plant growth and performance across regions and environmental conditions.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128720"},"PeriodicalIF":6.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luyao Wang , Ruozhen Cheng , Xu Wang , Wenping Song , Sheng Zhang , Shichun Huang
{"title":"A dynamic assessment for greenness exposure and socioeconomic drivers: Evidence from 314 Chinese cities (2000–2020)","authors":"Luyao Wang , Ruozhen Cheng , Xu Wang , Wenping Song , Sheng Zhang , Shichun Huang","doi":"10.1016/j.ufug.2025.128717","DOIUrl":"10.1016/j.ufug.2025.128717","url":null,"abstract":"<div><div>Equitable access to urban green spaces is crucial for the physical and mental health of urban residents, the social equity of cities, and their sustainable development. However, rapid urbanization has led to a series of ecological challenges, including land use changes and reductions in green space, which have progressively worsened the uneven distribution of green spaces. While much of the existing research has focused on measuring greenness exposure or accessibility, less attention has been given to the dynamic assessment of equity and its socioeconomic drivers. To address this gap, this study investigates the dynamics of greenness exposure and its inequality (Gini index) in Chinese cities from 2000 to 2020, utilizing vegetation index products. We also explore the correlation between various socioeconomic factors and the disparity in greenness exposure, both across cities and within cities—specifically between city centers and suburban areas. Our findings reveal a notable recovery in greenness exposure between 2010 and 2020, following a decline from 2000 to 2010, with significant improvements observed in larger cities such as Mega and Extra-large cities. Despite this, inequality in green exposure has increased over time, with the Gini index rising from 0.083 in 2000–0.11 in 2010 and 0.13 in 2020. Regression analysis further indicates that a 1 % increase in built-up area leads to a 0.01 %–0.05 % decline in greenness exposure, while higher residential density and <em>urban complexity</em> contribute significantly to widening disparities. Furthermore, restrictions on building height and the reduction of urban heat, along with appropriate urban planning, have been shown to improve residents’ access to green spaces. This research underscores the importance of integrating green spaces into urban planning to ensure equitable access and enhance the sustainability of urban environments. By examining the dynamics of greenness exposure and its potential drivers, this study provides valuable insights for policymakers and urban planners aiming to create more livable and equitable urban spaces.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128717"},"PeriodicalIF":6.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Geospatial analysis for promoting urban green space equity: Case study of Detroit, Michigan, USA","authors":"Jessica LaReaux, David Watkins","doi":"10.1016/j.ufug.2025.128716","DOIUrl":"10.1016/j.ufug.2025.128716","url":null,"abstract":"<div><div>Urban green spaces play a vital role in promoting human health and well-being, enhancing urban ecosystems, and supporting urban sustainability and resilience. However, inequities in the distribution and accessibility to urban green spaces can disproportionately affect vulnerable and underserved communities. This study examines the distribution and accessibility of urban green spaces in Detroit, Michigan, using high-resolution geospatial data and geospatial analysis methods, including geographically weighted regression (GWR) and network-based analyses. The study aims to correlate urban green space access inequities with social and environmental justice indicators and offer strategies for urban planners to identify and address green space inequities using geospatial analysis. The case study identifies significant urban green space inequities, with 87 % (53 %) of buildings lacking a park or recreational area within a quarter-mile (half-mile) walking distance. GWR analysis further demonstrates that neighborhoods with higher social vulnerability scores tend to have significantly lower green space availability, although park areas appear to be equitably distributed in some parts of the city. These findings highlight critical areas in Detroit that can be prioritized for green space development to address these inequities and create healthier, more resilient urban environments. The methods presented can be applied to other cities to assist urban planners in identifying where resources can be most efficiently allocated to address current green space disparities, particularly in historically underserved areas.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128716"},"PeriodicalIF":6.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Łukasz Walas , Katarzyna Sękiewicz , Petros Ganatsas , Zoltán Barina , Alexander Tashev , Grzegorz Iszkuło , Monika Dering
{"title":"Tracing back the history of introducing horse-chestnut in Europe","authors":"Łukasz Walas , Katarzyna Sękiewicz , Petros Ganatsas , Zoltán Barina , Alexander Tashev , Grzegorz Iszkuło , Monika Dering","doi":"10.1016/j.ufug.2025.128715","DOIUrl":"10.1016/j.ufug.2025.128715","url":null,"abstract":"<div><div>The horse-chestnut (<em>Aesculus hippocastanum</em> L.), a popular ornamental tree widely cultivated throughout Europe since the 16th century, has a very limited natural range. The work presented was intended to shed light on the human-mediated spread of this species from natural Balkan populations to artificial sites. For this purpose, chloroplast DNA (cpDNA) regions were used. We sampled 670 individuals from 83 locations, including 17 natural populations and 66 artificial stands. We detected 11 haplotypes, with haplotype I dominating in the artificial range and the northern part of the species natural range, particularly in Albania and Northern Greece. This result supports historical records suggesting initial introductions from the northern part of the Pindos Mountains to Istanbul. The results also suggest potential later episodes of introduction, probably from eastern Greece. Seven haplotypes were detected only in the natural range, indicating the isolation of particular populations. Significant reduction in genetic diversity in artificial stands compared to natural ones may suggest a founder effect during its introduction. The presented work highlights the importance of preserving genetic diversity in natural horse-chestnut populations to enhance resilience against pests and diseases. It also contributes to a better understanding of the evolutionary and ecological mechanisms of tree species colonisation, which may have implications for improving conservation strategies in the face of climate change.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128715"},"PeriodicalIF":6.0,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143342989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}