Urban Forestry & Urban Greening最新文献

{"title":"A general allometric model for urban vines to estimate above-ground biomass","authors":"Qiuyu Tao ,&nbsp;Han Sun ,&nbsp;Dayong Fan ,&nbsp;Xiangping Wang","doi":"10.1016/j.ufug.2024.128653","DOIUrl":"10.1016/j.ufug.2024.128653","url":null,"abstract":"<div><div>Vines play an important role in urban vertical greening, while there is no practical method to estimate above-ground biomass of urban vines. Allometric equation is an effective approach for non-destructive estimation of biomass. However, due to lacking mechanical support tissue, vines may have distinctive allometric laws which existing allometric equations derived from self-supporting plants may not be applicable. Here, we collected 259 branches from 12 different species of urban vines to analyze the allometric relationships by standard major axis (SMA). We also built mixed-effect models and used ANOVA to investigate the effects of biotic and abiotic factors on these allometric relationships. Our results showed that leaf-stem biomass partition scaling allometric relationships of vine branches were stable and there was little significant difference among species and life forms, which showing strong biophysical constraints and supporting the predictions of theoretical allometry model such as metabolic scaling theory (MST). Almost all the biotic and abiotic factors have no significant effect on the exponents of diameter-leaf/stem biomass allometric relationships while only had weak effects on constants. Based on these results, we proposed a series of generalized equations to estimate above-ground biomass of common urban vines. Considering our finding that vines exhibit robust biophysical constraints and phylogenetic niche conservatism, which are hardly being affected by environmental factors, the utilization of general allometric equations may be a highly promising method to predict above-ground biomass of urban vines in the future.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"104 ","pages":"Article 128653"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157025","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":"Assessing the vulnerability of urban tree species to climate change: The case study of Lisbon gardens","authors":"Ana Raquel Cunha ,&nbsp;Ana Luísa Soares ,&nbsp;Sílvia Catarino ,&nbsp;Maria Cristina Duarte ,&nbsp;Maria M. Romeiras","doi":"10.1016/j.ufug.2024.128664","DOIUrl":"10.1016/j.ufug.2024.128664","url":null,"abstract":"<div><div>To mitigate the effects of climate change on urban green spaces, adaptive strategies are required, particularly regarding tree species. Lisbon is a most vulnerable city to extreme climate events and the performance and management of the numerous and diverse trees found in its gardens and parks are of much concern. We evaluated the vulnerability of such trees to predicted future Lisbon climates using the Climate Assessment Tool (Climate Change Alliance of Botanic Gardens, 2024) and inventories from 63 historical gardens and parks, including three botanical gardens. With the extensive information of the latter we: (i) identified and classified the species according to biogeographical origins; (ii) pinpointed those most vulnerable to, or favoured by climate change; and (iii) assessed the vulnerability of each studied site, according to the species present, their risk level and abundance. Among the selected 318 taxa (corresponding to 19,579 trees), the Palaearctic biogeographical region predominates. The highest risk levels were found in 50 % (77 %, for the most pessimistic climate scenario) of the Palaearctic species, which include many native taxa. Conversely, about 56 % of the Neotropical species are predicted to perform better under the worst climate change scenario. Only one of the ten most abundant tree species in Lisbon – <em>Jacaranda mimosifolia</em> – might remain invulnerable. Management plans for most Lisbon green spaces must therefore reexamine the use of Palaearctic species and tackle challenging adjustments, including the gradual replacement of familiar species (increasingly more difficult to maintain) by others with better performance under future climate conditions.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"104 ","pages":"Article 128664"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157059","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":"Perceptions of trade-offs between urban forest ecosystem services and disservices: A case study of Canberra, Australia","authors":"Baige Zhang","doi":"10.1016/j.ufug.2025.128711","DOIUrl":"10.1016/j.ufug.2025.128711","url":null,"abstract":"<div><div>Urban greening initiatives are increasingly integrated into urban planning and climate change strategies, offering multiple benefits to residents. Despite growing advocacy for incorporating diverse stakeholder preferences and concerns into policy-making processes, there remains a knowledge gap about differences in perceptions between decision-makers and other stakeholders. Using Canberra, Australia, as a case study, this research explores the perceptions of policymakers and key stakeholder groups regarding urban forest ecosystem services (ESs), ecosystem disservices (EDs), and associated trade-offs through analysing legislative instruments, policy documents, and stakeholder submissions. The findings reveal that while legislation exhibits a high level of cohesiveness, policy documents and stakeholder submissions prioritise ESs variably. Notwithstanding generally shared acknowledgement of the urban forest’s importance, perceptions of key stakeholder groups about ESs, EDs and trade-offs differed, and from those of policymakers, in some key respects. The disparities are mainly attributed to the different scales at which urban forests are perceived, and divergent value orientations among stakeholders. Results suggest that policymakers can draw from the differing perceptions to inform decisions at both city-wide and neighbourhood levels. However, making informed choices about trade-offs requires careful consideration of multiple policy objectives and the diverse values of stakeholders. More proactive engagement with key stakeholders in the policy-making process could foster a consistent and comprehensive understanding of, and response to, these diverse perceptions. These results from Canberra underscore the benefits of more inclusive approaches to the development of urban greening strategies, to achieve more socially-sustainable outcomes.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128711"},"PeriodicalIF":6.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165932","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":"Modelling the effects of vegetation and urban form on air quality in real urban environments: A systematic review of measurements, methods, and predictions","authors":"Mengxue Yao ,&nbsp;Michael Smith ,&nbsp;Chengzhi Peng","doi":"10.1016/j.ufug.2025.128693","DOIUrl":"10.1016/j.ufug.2025.128693","url":null,"abstract":"<div><div>Air pollution poses a significant threat to public health and well-being. In recent decades, researchers have used direct measurements and predictive modelling to assess urban air quality. However, the impact of vegetation and urban form on air quality remains uncertain, particularly regarding their interconnected roles. This paper systematically reviews studies on real urban environments, focusing on how vegetation and urban form influence air quality assessment and prediction. It highlights key variables and their importance, as reported in the literature, and identifies areas needing further research to improve predictions of vegetation’s effects on urban air quality in relation to urban morphology.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128693"},"PeriodicalIF":6.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419257","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":"Assessing tree canopy cooling efficiency in different local climate zones: A cost-benefit analysis","authors":"Aowei Liu ,&nbsp;Chengsheng Wang ,&nbsp;Guanning Shang ,&nbsp;Bo Hong","doi":"10.1016/j.ufug.2025.128694","DOIUrl":"10.1016/j.ufug.2025.128694","url":null,"abstract":"<div><div>Specific mechanisms by which tree canopy coverage (TCC) influences cooling and heat alleviation across different local climate zones (LCZs) are not yet fully understood, particularly in terms of nurturing costs and the threshold of TCC. This study, using six typical LCZs in Xi'an as a case study, employed a combination of field measurements and numerical simulations to establish the mathematical relationships between TCC, cooling intensity, and heat alleviation at the LCZ scale. A cooling benefit evaluation system, incorporating nurturing costs, was developed to precisely define the TCC threshold for each LCZ. The findings indicated that: 1) Tree cooling effects were influenced by wind direction and building shadow, with low-rise LCZs showing heightened sensitivity to TCC variations; 2) Low-rise LCZs had greater potential for thermal comfort improvement, with the most significant enhancements in the middle of streets in midrise and low-rise LCZs as greenery increased, and LCZ2 exhibiting optimal thermal comfort on the downwind side of streets; 3) A linear regression relationship existed between cooling intensity and TCC across six LCZs, while a logarithmic regression relationship was observed between heat alleviation and TCC in all LCZs except LCZ6; 4) TCC had a quadratic regression relationship with cooling efficiency, with high and compact LCZs reaching the TCC threshold sooner. The TCC thresholds for the LCZs were 24.08 % (LCZ1), 33.18 % (LCZ2), 45.35 % (LCZ3), 32.49 % (LCZ4), 44.89 % (LCZ5) and 47.12 % (LCZ6). Our research elucidated the cooling and heat alleviation effects of TCC at LCZ scales and offered a quantitative basis for optimizing tree planting management by balancing cooling benefits and nurturing costs.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128694"},"PeriodicalIF":6.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165021","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":"Fusing aerial photographs and airborne LiDAR data to improve the accuracy of detecting individual trees in urban and peri-urban areas","authors":"Yi Xu,&nbsp;Tiejun Wang,&nbsp;Andrew K. Skidmore","doi":"10.1016/j.ufug.2025.128696","DOIUrl":"10.1016/j.ufug.2025.128696","url":null,"abstract":"<div><div>Urban trees provide essential social, economic, and environmental benefits. The sustainable management of urban trees often requires basic information at the individual tree level. Aerial photographs and airborne LiDAR are two primary remote sensing data sources widely used in developed countries for large-scale mapping of individual trees in urban areas. However, limited by the imaging principles of different data modes, achieving high mapping accuracy for individual trees using either of these two datasets alone is challenging. In this study, we aimed to leverage the respective advantages of aerial photographs and airborne LiDAR to improve the detection accuracy of individual trees. Utilizing a RetinaNet-based deep learning model, we first identified key metrics from aerial photographs and airborne LiDAR data for individual tree detection. Then, we rectified the misalignment of individual trees between the aerial photographs and airborne LiDAR data using a newly described object-oriented approach. Finally, we detected individual trees at the pixel level and the decision level, respectively. For pixel-level fusion, we combined the selected metrics (i.e., the red, green, and infrared bands as well as the canopy maximum model) from two datasets to detect individual trees. At the decision level, we fused the crowns of individual trees detected from the two rectified datasets. Our findings reveal that rectifying the misalignment between individual trees in both datasets significantly enhances detection accuracy, resulting in a notable increase in F1-score from 0.724 to 0.828. Furthermore, our results indicate that the decision-level data fusion approach yields the highest detection accuracy, with an F1-score of 0.814. This performance surpasses that of aerial photographs (F1-score: 0.592) and airborne LiDAR (F1-score: 0.776) individually. Our study underscores that integrating aerial photographs and airborne LiDAR data is an effective approach to improve the detection accuracy of individual trees in heterogeneous urban and peri-urban landscapes.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128696"},"PeriodicalIF":6.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165981","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":"Selection of medium-sized, shade-tolerant trees for urban tropical landscapes, Bangkok, Thailand","authors":"Taengmoo Phunchaisri ,&nbsp;Chongrak Wachrinrat ,&nbsp;Nisa Leksungnoen ,&nbsp;Tushar Andriyas ,&nbsp;Nut Panyain","doi":"10.1016/j.ufug.2025.128686","DOIUrl":"10.1016/j.ufug.2025.128686","url":null,"abstract":"<div><div>Urban green spaces are crucial for its residents, particularly in improving their health and providing recreational benefits. Typically, a simple vertical structure of urban trees limits their urban biodiversity and reduces ecosystem services. This study examined the significance of nine medium-sized shade-tolerant tree species in enhancing the urban canopy structure through light response curve modeling. Cluster analysis was used to differentiate the photosynthetic behavior of tree species in relation to variations in light intensity. Clustering was performed based on parameters derived by fitting a non-rectangular hyperbolic model with a linear perturbation term beyond light saturation point. Three distinct groups of light response curves were identified and labeled under saturating, falling, or increasing trends. The results indicated that two native species: <em>Ficus benjamina</em> and <em>Sphaerocoryne lefevrei</em> were light demanding and exhibited an increasing photosynthetic response to light. Meanwhile, <em>Diospyros decandra, Bauhinia purpurea</em>, <em>Guaiacum officinale and Murraya paniculata</em> were categorized as shade-tolerant and could be used for enhancing urban green canopy cover in low-light environments. <em>Calophyllum inophyllum</em> and <em>Gustavia gracillima</em> sequestered the most CO₂, as indicated by their highest maximum photosynthetic rates. The findings can be beneficial for urban planners in selecting suitable species to mitigate climate change, while also increasing the biodiversity and ecosystem services for urban residents.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128686"},"PeriodicalIF":6.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165930","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":"How does Blue-Green Infrastructure affect the urban thermal environment across various functional zones?","authors":"Lu Zhang ,&nbsp;Siyu Wang ,&nbsp;Wei Zhai ,&nbsp;Zhichao He ,&nbsp;Wenjiao Shi ,&nbsp;Yueru Li ,&nbsp;Chunhong Zhao","doi":"10.1016/j.ufug.2025.128698","DOIUrl":"10.1016/j.ufug.2025.128698","url":null,"abstract":"<div><div>Considering the limited availability of urban Blue-Green Infrastructure (BGI), a principal area of focus in this research is identifying methods to maximize their cooling effects more effectively. Previous research has identified varying dominant factors in mitigating the urban heat island effect through the spatial arrangement of BGI. However, research on the specific mechanisms of these factors within different urban functional zones (UFZs) and their interactions with human activities remains insufficient. In this research, the influence of the BGI landscape index on surface temperature in different UFZs is explored through a random forest model, using Changchun, China as a case study. Results indicate that 1) Reducing the patch density of Green Infrastructure to 50 patches/ha can effectively lower surface temperature in Ecological Zones. 2) In other UFZs, the percentage of landscape of Green Infrastructure typically acts as a crucial factor contributing to the cooling effect. 3) Enhancing connectivity and proportional area of Blue Infrastructure markedly advances the cooling impacts in Ecological Zones. This study offers data-driven empirical evidence for advancing urban planning and environmental management strategies. It emphasizes the need to incorporate proper BGI patterns and urban functions in planning processes to effectively mitigate the urban heat island effect.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128698"},"PeriodicalIF":6.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143342995","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":"The comparative thermal experience of young and old pedestrians in urban green spaces and in densely built areas","authors":"Zheng Tan ,&nbsp;George Christopoulos ,&nbsp;Adam C. Roberts ,&nbsp;Guancong Ren ,&nbsp;Wanlu Ouyang ,&nbsp;Kathy Lo ,&nbsp;Clement Ho","doi":"10.1016/j.ufug.2025.128712","DOIUrl":"10.1016/j.ufug.2025.128712","url":null,"abstract":"<div><div>Comfortable walking environments promote healthy lifestyle and facilitate active ageing. Thermal comfort during walking is a relatively unexplored research area. It has become a more critical issue due to the increased frequency of very hot weather. This study conducted a real-site experiment to study thermal comfort during walking for both older and younger adults. Participants walked in a “shaded-unshaded-shaded” sequence in a densely built-up area and a green space during very hot weather conditions. Microclimate variables, participants’ physiological responses and thermal sensation votes were recorded in the experiment. The physiologically equivalent temperatures (PET) during walking status in different environmental settings were estimated for the older and younger adult groups. The results indicated that, after a person walked in an unshaded space and reached a “hot” thermal sensation, walking in a shaded built-up area improved thermal sensation but not to a neutral level. Only a shaded green space could help to restore comfort during walking. While younger adults’ thermal sensation changes were mainly explained by PET changes, older adults tended to be more affected by the different settings of built-up area and green space. Among the physiological metrics adopted in the study, skin temperature and heart rate showed significant correlations with the thermal sensation vote. Design implications such as street greening work and minimum provision of tree shading on pedestrian areas were discussed.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128712"},"PeriodicalIF":6.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165931","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":"(Re)greening transition of academic green spaces as a response to social and environmental challenges: The role of bottom-up initiatives","authors":"Jarosław Działek ,&nbsp;Ewa Jarecka-Bidzińska ,&nbsp;Anna Staniewska ,&nbsp;Fanny Téoule","doi":"10.1016/j.ufug.2025.128692","DOIUrl":"10.1016/j.ufug.2025.128692","url":null,"abstract":"<div><div>While university campuses provide a substantial and diverse array of green areas, their development usually contributes to the adverse effects of urbanisation on ecosystems. However, academic green spaces may contribute to socio-ecological transitions, and higher education institutions can use their educational and scientific potential to implement sustainable development strategies. Our study explores the (re)greening transition of a university campus in Central Europe. Specifically, we aim to identify the role of grassroots university activism in this process, the driving forces behind it, and the challenges encountered. We understand the (re)greening transition as a multifaceted shift that includes changes in landscaping practices, the implementation of nature-based solutions, and the reduction of impermeable surfaces wherever possible. We identified three stages of the transition: green opposition, green acupuncture with collaborative projects, and patchworked palimpsest with the institutionalisation of bottom-up initiatives. These stages constitute a response to an earlier period of top-down ‘terraformation’ that destroyed semi-natural habitats and implemented traditional landscaping. While the (re)greening transition cannot fully restore pre-construction habitats, the academic green spaces on campus now serve a wider range of functions, including aesthetic, social, regenerative, ecological, educational and scientific roles, thereby enhancing the cultural, regulating and provisioning ecosystem services provided by these spaces.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"105 ","pages":"Article 128692"},"PeriodicalIF":6.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143071580","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}