{"title":"Urban tree carbon storage estimation using unmanned aerial vehicles remote sensing","authors":"Hangfei Tian, Chaozhen Xie, Meiheng Zhong, Yuxin Ye, Rixiu Zhou, Dehua Zhao","doi":"10.1016/j.ufug.2025.128755","DOIUrl":"10.1016/j.ufug.2025.128755","url":null,"abstract":"<div><div>Urban green spaces play a crucial role in the carbon cycling process. The rapid remote sensing of carbon storage in trees within urban built environments remains a challenging endeavor due to the highly fragmented distribution of trees and complex land surface. The study aims to validate the feasibility of estimating individual urban tree carbon storage using UAV remote sensing and explore the driving factors of spatial variations in tree carbon storage. The diameter at breast height (DBH) of 841 <em>Cinnamomum camphora (L.) Presl</em> trees along six representative streets in Nanjing City was manually measured, and parameters including tree height (TH), crown area (CA), crown circumference (CC), and crown width (CW) were extracted from images of unmanned aerial vehicles (UAVs) using software such as DJI Terra, ArcGIS Pro, and Python. The results showed that the allometric growth relationship between urban tree DBH and TH was less stable than that of natural forests, which was related to the variation of the competition between individuals and building shading. In terms of determination coefficient (R<sup>2</sup>), UAV remote sensing could estimate urban tree DBH (R<sup>2</sup>=0.62) and carbon storage (R<sup>2</sup>=0.71) using multivariate estimation models in which all the input parameters was obtainable from UAV. Unexpectedly, the carbon storage of individual tree was positively correlated with competition intensity between canopies and building shading. This conclusion is useful to develop strategies to enhance carbon storage in urban green space, such as the appropriate increasing of tree planting density which can improve carbon storage of both individual tree and unit land area, and the more tree planting in densely built regions.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128755"},"PeriodicalIF":6.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579155","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":"Does perceived biophilic design contribute to human well-being in urban green spaces? A study of perceived naturalness, biodiversity, perceived restorativeness, and subjective vitality","authors":"Shih-Han Hung","doi":"10.1016/j.ufug.2025.128752","DOIUrl":"10.1016/j.ufug.2025.128752","url":null,"abstract":"<div><div>Through the application of biophilic design, urban environments provide insights into the dynamic interplay of nature, biodiversity, and human health. This study examined how perceived biophilic design (PBD) and perceived restorativeness in urban parks influenced visitors' subjective vitality, focusing on the mediating roles of perceived naturalness and biodiversity elements. Out of the 1177 questionnaires collected across four types of urban parks (ecological parks, inclusive playground parks, sports parks, and open green spaces), 1133 were complete and thus valid. The results showed that ecological parks were rated highest in perceived naturalness, while open green spaces were perceived to have greater biodiversity in bird and plant/tree species. Positive correlations were found among PBD, perceived restorativeness, perceived naturalness, and subjective vitality. Path analyses revealed that PBD and perceived restorativeness had significant direct effects on subjective vitality, with perceived naturalness as a mediator. Perceptions of biodiversity elements such as plants/trees, birds, and butterflies also contributed to PBD, perceived restorativeness, and the subjective vitality, although their impacts varied across the four park types. This research contributes to the existing literature on environmental psychology by providing the pathways through which biophilic design and restorative urban environments improve people’s psychological health. The study emphasizes the need for urban planning strategies that incorporate natural elements and biodiversity to promote public health and well-being.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128752"},"PeriodicalIF":6.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579153","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":"Effects of urban greenspaces on public health and wellbeing: Serial mediation model of objective and subjective measures","authors":"Junyi Hua , Chao Ren , Shi Yin , Wendy Y. Chen","doi":"10.1016/j.ufug.2025.128753","DOIUrl":"10.1016/j.ufug.2025.128753","url":null,"abstract":"<div><div>It is widely acknowledged that sufficient provision of urban greenspaces can facilitate public exposure to nature and recreational use, thereby improving public health and wellbeing. While both objective and subjective measures have been adopted to associate urban greenspaces with public health and wellbeing, little attention has been paid to the nuanced serial mediation effects of objective matrices of greenspaces on residents’ subjective perception, use behaviors, and health/wellbeing. Using Hong Kong, one of the most densely-populated cities in the world, as a case study, a total of 1196 residents were surveyed, whose residential locations are geo-coded and a serious of objective measures of greenspace provision within 500-meter walking distance, including size, proximity, crowdedness, naturalness, facilities, and maintenance, are established using street view images, satellite images, and digital topographic maps. Potential pathways are constructed to link objective measures of greenspace provision, subjective matrices, use behaviors, and self-rated health and wellbeing, directly or indirectly via serial mediation model. Empirical results show that subjective measures of greenspaces play significant mediating roles in associating objective greenspace provision with residents’ health and wellbeing. Additionally, serial mediation effects of subjective satisfaction and use behaviors could be specified for greenspace-health relationship, but not greenspace-wellbeing relationship. This study extends the conventional knowledge base of greenspace-health/wellbeing association established from the direct/indirect pathways to account for the serial mediating role of subjective perception and use behaviors, and sheds additional light on the effects of urban greenspaces on public health and wellbeing based on individual-level analysis in a high-density urban context. Along with enhancing greenspace provision, improving residents’ satisfaction with greenspaces in their residential neighborhoods holds the promise to promote their physical interaction with and exposure to urban nature, and improve public health effectively.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"106 ","pages":"Article 128753"},"PeriodicalIF":6.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519914","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}
Nannan Du , Juanjuan Zhao , Kunrong Qin , Haiyang Wang , Yajun Yang , Fengping Yang
{"title":"Flooding and land use drive variation in phylogenetic structure and taxonomic diversity of plant communities in urban riparian zones of a regulated river","authors":"Nannan Du , Juanjuan Zhao , Kunrong Qin , Haiyang Wang , Yajun Yang , Fengping Yang","doi":"10.1016/j.ufug.2025.128741","DOIUrl":"10.1016/j.ufug.2025.128741","url":null,"abstract":"<div><div>Riparian zones in urban areas have been persistently affected by human-mediated disturbances such as dam construction and urbanization. However, the driving patterns of variation in the phylogenetic diversity (PD) and taxonomic diversity (TD) of urban riparian plants remain unclear due to the complexity of the urban riparian environment. Therefore, 15 sample sites along rivers affected by the Three Gorges Dam in the urban areas of Chongqing, Southwest China, were selected to investigate the variations in TD and PD and their driving factors in riparian plant communities subjected to multiple disturbances. The middle position of the riparian zone had the highest plant TD compared with that in the upper and lower positions, while the upper position had the highest plant PD. Flood duration and the proportion of urban green space within a 500 m radius (PGS) adversely affected riparian plant TD. However, invasive plant TD was positively affected by the flood duration, suggesting that invasive plant species have a greater ability to occupy ecological niches under flood stress than native plant species. Fragmented, heterogeneous surrounding landscapes drive plant invasions. Phylogenetic structure was aggregated, indicating an environmental filtering strategy of the riparian plant community. Plant PD was positively related to riparian position and soil pH. It was also negatively affected by PGS probably due to fragmentation in nearby urban green spaces. Flood duration and PGS significantly influenced the composition of riparian plant communities. A majority of invasive species were flood tolerant, which may threaten the stability of riparian ecosystems. The implications for maintaining riparian plant diversity in the riparian zones along the watersheds heavily disturbed by dam construction and urbanization were explored. Our research contributes to sustainable planning and ecological restoration strategies that support the resilience and functionality of urban riparian zones in reservoir-regulated basins worldwide.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128741"},"PeriodicalIF":6.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548632","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":"Edge and the city: Evaluating the role of edge effects on urban forest structure and tree species composition","authors":"J.P. Hellenbrand , P. Kelly-Voicu , J.T. Bowers , A.B. Reinmann","doi":"10.1016/j.ufug.2025.128745","DOIUrl":"10.1016/j.ufug.2025.128745","url":null,"abstract":"<div><div>Urban forests are highly valued for the important services they provide (e.g., carbon sequestration, supporting biodiversity), many of which are closely linked to ecosystem structure and tree species composition. High pressure from non-native species and a prevalence of edge effects often characterizes urban forests, but how the confluence of these factors alters tree species composition and structure remains uncertain. We hypothesized that edge effects would increase urban forest basal area and stem density but also shift tree communities towards higher abundances of non-native species. We tested these hypotheses in the forests of New York City, New York using two approaches that employ: (1) high spatial resolution data from 8 transect-style plots and (2) a New York City-wide ecological assessment that includes 1124 plots. We find that urbanization and fragmentation each play a distinct role in shaping the structure and composition of the urban forest. Forest basal area and stem density were significantly higher near forest edges compared to the interior. By contrast, edge effects had only a small impact on the occupancy rates of non-natives in the canopy. Instead, we found evidence of compositional shifts between the canopy and regenerating forest strata exemplified by native oaks (Quercus spp.), which currently dominate the canopy, being replaced within the regenerating stratum by other native and non-native species. Taken together, these findings suggest that urban forests likely store more carbon than initially assumed, but also that the urban forests of tomorrow will likely be compositionally different, with important implications for ecosystem function.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128745"},"PeriodicalIF":6.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592162","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}
Anna Maria Vettraino , Nikoleta Soulioti , Dinka Matosevic , Hatice Tuğba Doğmuş Lehtijarvi , Steve Woodward , Alberto Santini , Nicola Luchi
{"title":"Management of fungal diseases of Platanus under changing climate conditions: Case studies in urban areas","authors":"Anna Maria Vettraino , Nikoleta Soulioti , Dinka Matosevic , Hatice Tuğba Doğmuş Lehtijarvi , Steve Woodward , Alberto Santini , Nicola Luchi","doi":"10.1016/j.ufug.2025.128750","DOIUrl":"10.1016/j.ufug.2025.128750","url":null,"abstract":"<div><div><em>Platanus</em> species, especially <em>Platanus × hispanica</em> (London plane), play a key role in urban areas due to their ecological, social and aesthetic value. These trees are widely planted along roadsides, in parks and historical gardens, providing shade, reducing air pollution and enhancing the aesthetic appeal of cities all over the world. Known for their resilience to abiotic factors and rapid growth, these trees are vulnerable to pests and diseases, exacerbating urban plant health challenges. While the EU Phytosanitary Regulation aims to control the spread of plant diseases, many pathogens fall outside its scope. Although many of these pathogens are not devastating, they still require continuous management by authorities or private owners. This paper focuses on disease managment guidelines for <em>Ceratocystis platani</em>, the only EU regulated fungal disease affecting plane trees, and other pathogens, <em>Apiognomonia platani</em>, <em>Macrodiplodiopsis desmazieri</em> and <em>Erysiphe platani</em>, which compromise the ecosystem services provided by <em>Platanus</em> trees and impact human health and safety.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128750"},"PeriodicalIF":6.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619527","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":"Urban trees through a functional traits’ lens: Exploring the interplay between tree functional groups and social-ecological factors","authors":"Filipa Grilo , Timon McPhearson , Cristiana Aleixo , Margarida Santos-Reis , Cristina Branquinho","doi":"10.1016/j.ufug.2025.128749","DOIUrl":"10.1016/j.ufug.2025.128749","url":null,"abstract":"<div><div>Urban trees’ functional traits influence their resilience to environmental changes and the delivery of ecosystem services. However, research on classifying urban trees into functional groups based on species traits - clusters of species with similar responses to environmental stressors and providing similar ecosystem services - and exploring the factors that shape their distribution is limited. This study classified a subset of urban trees in Lisbon, Portugal, into functional groups using 20 traits related to survival, establishment, tolerance, and ecosystem services delivery. We analyzed their distribution patterns across the city and modelled their abundance at the local scale, considering various social and ecological factors. These results were integrated with the municipality’s tree selection criteria. Our results revealed three functional groups - temperate, mediterranean, and tropical - each with the potential to deliver complementary ecosystem services. The distribution of the temperate functional group, the most abundant, was primarily associated with social factors, such as proximity to roads and public spaces. However, the temperate group had lower potential resilience to climate change due to its association with humid temperate climates, raising concerns in areas dominated by these species. In contrast, the mediterranean and tropical groups were influenced by both social and ecological factors, with trait data suggesting their potential to thrive under future climate conditions. These findings emphasize the need to enhance local functional diversity to increase ecological resilience and ensure a wider range of ecosystem services, especially in the context of climate adaptation. Overall, this analysis demonstrates the importance of social-ecological factors in shaping the functional composition of urban green spaces, offering insights into the roles of traits in sustainable species selection and urban tree management.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128749"},"PeriodicalIF":6.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548633","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}
Kun Li , Wenhao Hu , Xi Chen , Mengyuan Zhang , Kemo Ye , Hao Zhu , Hongbo Zhao
{"title":"More fruits, more birds? How plant traits attract birds feeding in urban green spaces during winter","authors":"Kun Li , Wenhao Hu , Xi Chen , Mengyuan Zhang , Kemo Ye , Hao Zhu , Hongbo Zhao","doi":"10.1016/j.ufug.2025.128748","DOIUrl":"10.1016/j.ufug.2025.128748","url":null,"abstract":"<div><div>Rapid urban development poses drastic changes in bird biodiversity. Trees in urban green spaces play an essential role in bird conservation, providing crucial nesting sites and food resources. The fruits of woody plants offer food resources for birds throughout most of the year, especially during winter. However, the dominant traits of woody plants that attract frugivorous birds to feed in urban green spaces during winter remain poorly understood. To evaluate the interaction network between frugivorous birds and heterogeneous woody plant species, and figure out how plant structure traits, fruit morphological traits, and fruit nutritional traits influence the diversity of frugivorous birds, a pilot sampling survey of frugivorous birds on 10 native woody plant species was conducted on a university campus in Hangzhou, China. The results show that (1) most frugivorous birds interact specifically with certain plant species in urban green spaces during winter; (2) plant-frugivorous birds interaction network showed a significantly low level of connectance, specialization, and nestedness; (3) in all functional traits of woody plants, fruit abundance (FA) contributes most to the richness and abundance of frugivorous birds; (4) in 3 types of functional traits, plant structure traits play dominant roles in determining the richness and abundance of frugivorous birds, with explanatory power of 24.43 % and 34.0 %, respectively. Moreover, combining plant structure traits and fruit traits can better explain the diversity of frugivorous birds. This study expands our knowledge of the effect of plant and fruit traits in attracting frugivorous bird diversity in urban green spaces during winter, which can provide insights for woody plant selection and planting design to conserve bird species diversity in urban areas.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128748"},"PeriodicalIF":6.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548634","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}
Yuliia Bilonozhko , Olha Tokarieva , Berthold Heinze , Jonathan Feichter , Andrea Kodym
{"title":"Mistletoe on urban trees in the city of Vienna, Austria","authors":"Yuliia Bilonozhko , Olha Tokarieva , Berthold Heinze , Jonathan Feichter , Andrea Kodym","doi":"10.1016/j.ufug.2025.128740","DOIUrl":"10.1016/j.ufug.2025.128740","url":null,"abstract":"<div><div>A study of mistletoe on urban trees was conducted in Vienna, Austria, with the aim to determine the degree of mistletoe infection, and to identify host species that are highly susceptible or alternatively, resistant to mistletoe parasitism. At the same time, the dependence of mistletoe (<em>Loranthus europaeus</em> L; <em>Viscum album</em> L) occurrence on various factors was investigated. For this purpose, the tree cadastre of the city of Vienna was evaluated (the record is about 213,841 trees) and the Botanic Garden of the University of Vienna was visited. New host trees, not known in the literature, were described for the first time. The apparent spreading of mistletoes cannot be traced to a single factor; several are important and interacting. It could be shown that the presence of mistletoe in cities is closely related to the species of host tree, the location, the growing density of the trees, the age of the trees, as well as tree height. The host trees often showed marked adaptation of native tree species to mistletoe (i.e., fewer infections) and significant infection in introduced tree species. In some species, certain cultivars may be resistant or less susceptible to mistletoe than others. Among the damage or diseases observed on trees infected by mistletoe, bark damage occurred most frequently. Determining the distribution of mistletoe and the underlying factors is of great importance for green space management in cities, especially in relation to climate change.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"107 ","pages":"Article 128740"},"PeriodicalIF":6.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548630","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 heat-safe play index (H-SPI): A tool to compare relative thermal safety of outdoor playgrounds","authors":"Judi R. Walters , Sebastian Pfautsch","doi":"10.1016/j.ufug.2025.128747","DOIUrl":"10.1016/j.ufug.2025.128747","url":null,"abstract":"<div><div>Outdoor play is essential for healthy childhood development. In urban areas, public playgrounds are the most commonly used spaces for outdoor play, but they are not always thermally safe. Visitors can suffer from heat-related illness and injury from ultraviolet radiation, radiant heat, hot surfaces and dehydration. Playground design features including shade, surface materials and water availability impact thermal safety, but differences between playgrounds are generally unknown. We developed a ‘heat-safe play index’ (H-SPI) to compare relative thermal safety (RTS) at 142 public outdoor playgrounds in Sydney, Australia. Results showed that RTS varied greatly among playgrounds: H-SPI scores ranged from –28–92 out of a possible maximum of 100. Thirty-five playgrounds had been recently upgraded, so the H-SPI was used to compare RTS before and after modifications. There was an overall small increase in RTS: 60 % of playgrounds had higher H-SPI scores, but 37 % had lower scores. The H-SPI enables councils to compare RTS of different design options when planning playground modifications, and provide heat-safety information to playground users. This information will allow better-informed decisions that promote health benefits from safer outdoor play for children, and will help to build heat- resilient communities in a warming urbanised world.</div></div>","PeriodicalId":49394,"journal":{"name":"Urban Forestry & Urban Greening","volume":"106 ","pages":"Article 128747"},"PeriodicalIF":6.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508163","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}