Urban Forestry & Urban Greening最新文献

{"title":"Interactive mapping of allergenic urban street trees in Australia","authors":"D. Krwanji,&nbsp;AJM. Hopkins,&nbsp;K. Lemson,&nbsp;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}

{"title":"Creating a thermally comfortable city through urban green infrastructure: An international review of greening policies","authors":"Zhixin Liu ,&nbsp;Ka Yuen Cheng ,&nbsp;Marco Amati ,&nbsp;C.Y. Jim ,&nbsp;Chen Hua ,&nbsp;Makoto Yokohari ,&nbsp;Ross Cameron ,&nbsp;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}

{"title":"A nation-wide urban trial network of tree and shrub climate resilience","authors":"Manuel Esperon-Rodriguez ,&nbsp;Sally A. Power ,&nbsp;Mark G. Tjoelker ,&nbsp;Mahmuda Sharmin ,&nbsp;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_MAX) and the Pinna Combinative Index (<em>I</em>_P, 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>_P 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}

{"title":"A dynamic assessment for greenness exposure and socioeconomic drivers: Evidence from 314 Chinese cities (2000–2020)","authors":"Luyao Wang ,&nbsp;Ruozhen Cheng ,&nbsp;Xu Wang ,&nbsp;Wenping Song ,&nbsp;Sheng Zhang ,&nbsp;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,&nbsp;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}

{"title":"Tracing back the history of introducing horse-chestnut in Europe","authors":"Łukasz Walas ,&nbsp;Katarzyna Sękiewicz ,&nbsp;Petros Ganatsas ,&nbsp;Zoltán Barina ,&nbsp;Alexander Tashev ,&nbsp;Grzegorz Iszkuło ,&nbsp;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}

{"title":"Diverging values and development options for agroforestry in a metropolitan area of North Africa","authors":"Mario Torralba ,&nbsp;Emmeline Topp ,&nbsp;Fouad Mounir ,&nbsp;Laura Kmoch ,&nbsp;Tobias Plieninger","doi":"10.1016/j.ufug.2024.128633","DOIUrl":"10.1016/j.ufug.2024.128633","url":null,"abstract":"<div><div>The use of large green infrastructures in peri-urban areas, such as urban forests, has become one of the most relevant tools to mitigate some of the negative impacts of urbanization while providing multiple benefits to city dwellers. However, these peri-urban forests are often highly contested spaces. Agroforestry offers a promising solution to reconcile diverging interests in the peri-urban context. In this study, we look at the Maâmora cork oak forest in Morocco, which exemplifies some of the challenges faced by large-scale green infrastructures that become enmeshed in rapid urbanization. We explore these dynamics and (1) map how local residents perceive a peri-urban agroforest, (2) characterize groups of residents according to their perceptions, and (3) disentangle preferences for the development of green infrastructure. To do this, we conducted 278 participatory mapping interviews in three urban and three rural settlements around Maâmora, mapping urban and rural residents’ uses, values, disvalues, and development preferences. Our results show how urban agroforestry could reconcile multiple demands in peri-urban green spaces. However, our analysis reveals contrasting development preferences between rural and urban residents and points to a growing disconnection from nature among urban dwellers, which risks marginalizing diverse perspectives from those residents more closely connected to the landscape. Our analysis also highlights the importance of exploring disvalues for a better recognition of the plural values of nature and to identify potential conflicts in the context of urban and rural planning.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"104 ","pages":"Article 128633"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816568","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":"Characteristics and influencing factors of taxonomic and functional diversity of butterflies in urban green spaces","authors":"Haicong Zeng ,&nbsp;Hui Liu ,&nbsp;Jianan Wang ,&nbsp;Yan Zhu ,&nbsp;Haixun Wang ,&nbsp;Zirui Zhu ,&nbsp;Cheng Wang ,&nbsp;Zhenkai Sun","doi":"10.1016/j.ufug.2024.128662","DOIUrl":"10.1016/j.ufug.2024.128662","url":null,"abstract":"<div><div>Against the backdrop of urbanization posing a significant threat to global biodiversity, the biodiversity of urban green spaces and its influencing factors have become a hot topic in biodiversity conservation. However, most studies have focused on taxonomic diversity, neglecting functional and trait diversity. This study investigated the relationship between butterfly communities and urban green space environmental characteristics by analyzing changes in butterfly taxonomic diversity, functional diversity, and traits. We selected 80 urban green spaces in Hefei, Anhui Province, China, and conducted sampling and recording of butterfly traits for one year. Based on the understanding of butterfly taxonomic diversity and trait differences, we explored the effects of environmental characteristics on butterfly taxonomic diversity, functional diversity, and functional traits using methods such as generalized linear regression models, redundancy discriminant analysis, and environment matrix-trait matrix linkage analysis. During the one-year survey, we recorded 4822 butterflies of 55 species. These butterflies were mostly small to medium in size, with a long flying duration, multivoltine, polyphagous, and overwintered as pupae. The diversity and traits of butterflies in park green spaces were significantly higher than those in residential and street green spaces, with little difference across different urban rings and regions. Nectar plant abundance and distance from the city center, and area of plot were important factors influencing butterfly taxonomic and functional diversities. Butterfly communities were positively affected by spontaneous nectar plants and low-intensity management. Finally, we recommend that to create favorable butterfly habitats in urban areas, considering relevant traits such as life history, behavior, and ecological characteristics of butterflies, and providing diverse habitats to maintain population dynamics are necessary. Additionally, strategies should include increasing the diversity of food sources in urban green spaces, increasing the proportion of larval host plants, promoting low-intensity green space management, and using natural meadow greening forms.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"104 ","pages":"Article 128662"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156637","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":"Nature’s role in residential development: Identifying leverage points for climate change planning in Ontario, Canada","authors":"Adam Skoyles ,&nbsp;Michael Drescher ,&nbsp;Dawn C. Parker ,&nbsp;Derek T. Robinson","doi":"10.1016/j.ufug.2025.128714","DOIUrl":"10.1016/j.ufug.2025.128714","url":null,"abstract":"<div><div>Cities are establishing climate change related targets to mitigate the effects of climate change and adapt to its consequences. Natural features, such as trees and wetlands, can help communities reach their mitigation goals by storing carbon while also providing co-benefits that build resilience to climate change impacts. However, nature-based solutions for addressing climate change are not widely recognized in current development practices. To better understand this limitation, we interviewed nine municipal planners and eight private developers across Ontario, Canada, to assess how stakeholders in residential development consider natural features and climate change in their decisions. Our findings demonstrate that natural features, particularly in the natural heritage system, receive substantial attention in residential development decisions, but that climate change is rarely an explicit factor in those decisions. We anticipate that if the climate change benefits of natural features were explicitly quantified, this could impact the decisions of key stakeholders and support the design of alternative development forms. Our findings also suggest that policy changes, green development standards, cross-sector collaboration, and reliable ecosystem services data could all serve as significant leverage points for communities to support the implementation of nature-based solutions for climate change. Future research should investigate the effectiveness of green development standards and how tools that quantify ecosystem services could be incorporated into the development process to identify effective pathways for implementing nature-based solutions.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128714"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143342997","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":"Bridging the land use gap: Examining tree canopy cover and connectivity by land use in 10 U.S. cities","authors":"Michelle Stuhlmacher ,&nbsp;Dajoin Williams ,&nbsp;Chris Impellizeri ,&nbsp;Winifred Curran","doi":"10.1016/j.ufug.2024.128626","DOIUrl":"10.1016/j.ufug.2024.128626","url":null,"abstract":"<div><div>Areas of high tree canopy cover, especially connected tree canopy cover, provide habitat to support biodiversity and cooling to ameliorate the urban heat island effect. However, the nature-based solutions provided by trees are not distributed equally; land use contributes to this systematic inequality because the places where it is easiest to plant trees are often not where trees are needed most. To better understand the gaps and opportunities for tree planting across the urban landscape, we examine the distribution of tree canopy cover and connectivity by land use in 10 U.S. cities. We find that parks have the greatest tree canopy coverage followed by single-family residential areas, multi-family residential areas, and industrial land uses. On average, single-family neighborhoods had 8.5 % points more tree canopy coverage than multi-family neighborhoods, with gaps as high as 18.6 % points. Looking at the size of connected tree canopy, we find that residential land uses are home to more small contiguous tree canopy patches (&gt;1 ha in area), while parks have more large contiguous tree canopy (&gt;12 ha in area). We compare the contiguous tree canopy findings to tree planting policy in each city to examine the influence of intentional planning for tree connectivity, and close with policy-oriented implications of our results. Namely, we suggest: 1) closing the gap between single-family and multi-family tree canopy cover, 2) factoring connectivity into tree planting and preservation, and 3) taking a context-specific approach to increase tree cover in industrial areas in order to more equitably distribute the climate, ecological, and health benefits of trees.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"104 ","pages":"Article 128626"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782359","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}