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Urban Forestry & Urban Greening
Urban & Fischer Verlag
Urban Forestry & Urban Greening

Urban & Fischer Verlag

1618-8667

Urban Forestry & Urban Greening/Journal Urban Forestry & Urban GreeningSCIISSHP
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    A regulation-oriented approach for allergenicity categorization of plants

    Donat M.Anna P.Tamas S.Laszlo O....
    11页
    查看更多>>摘要：? 2022Plant species have different degrees of allergenicity. Existing systems categorizing plants according their allergenicity were reviewed to find a method that could serve as the basis for the regulation of green areas. The categorization of plants by their allergenicity serves different purposes: informing allergic patients, warning consumers in horticultural stands, or evaluating urban green areas. The regulation of allergenic plants in trade and their use in urban greening is a new, emerging application of allergenic categorization. Our review showed that the existing systems cannot be used for this purpose, because they cannot fulfill the main requirements of regulation: the methods were often not described, and this affected reproducibility and there was a lack of evidence on allergenicity. To overcome these issues, a new, evidence-based categorization (CARE-S) was developed using genetically determined factors of plants: immunogenicity, morphology, and pollen production. 529 plant taxa were categorized, mostly those common in urban areas in the Pannonian Biogeographical Region. The new system can be applied in other biogeographic areas and on new plant varieties by an online calculator tool. An adaptation strategy of CARE-S in regulations is also proposed. Additional benefits of CARE-S: 1: promoting the development of low-allergenic cultivars, 2: identifying overlooked allergens, recommending their use in clinical tests, 3: calling attention to plant taxa which need more research in allergology or botany; 4: providing a legal tool to prevent the introduction and dispersal of (new) allergenic plants. As a further step the authors suggest developing another tool, epidemiological allergenicity, derivated from CARE-S, aiming to characterize the geographically-determined effects of plants on human populations.
      原文链接:
    • NSTL
    • Elsevier

    Species richness and ecosystem services of tree assemblages along an urbanisation gradient in a tropical mega-city: Consequences for urban design

    Thaweepworadej P.Evans K.L.
    14页
    查看更多>>摘要：? 2022 Elsevier GmbHWe assess how tree species richness and ecosystem services vary along a tropical urbanisation gradient in a rapidly expanding mega-city (Bangkok, Thailand). We conduct tree surveys in 150 1 km cells selected by random stratification across an impervious surface cover gradient. In each cell, surveys were conducted at the centre (representing typical conditions) and in the largest patch of trees (assessing woodland retention impacts). We estimated trees’ contributions to i) carbon storage, ii) food production for people, iii) biodiversity support (production of food for frugivorous birds), and iv) economic value (assessed using regulations for using trees as collateral for financial loans). Surveys detected 162 species (99 natives) indicating substantial species loss relative to nearby natural forests. Despite this, and contrasting with typical patterns in temperate cities, tree species richness (including of natives) and ecosystem service provision is relatively stable across the urbanisation gradient. This finding has two important consequences. First, growing cities through high intensity developments that require less space may benefit regional biodiversity without compromising ecosystem services. Second, even the typically very small woodlands present in highly urbanised locations contribute to supporting biodiversity and providing ecosystem services; thus such woodlands require protection. Species richness is not strongly positively associated with most of our focal ecosystem services. Urban planners must therefore pay attention to both biodiversity and ecosystem services as these do not automatically accrue from each other, partly because non-native species contributed substantially to most ecosystem services except biodiversity support. Finally, trees provide substantial value as collateral for financial loans (averages of ￡643 ha at random locations and ￡2282 ha in wooded locations). Policies promoting such valuations may reduce tree removal and encourage tree planting, but the list of eligible species warrants revision to include additional species that enhance biodiversity support, ecosystem services, and resilience against future environmental instability.
      原文链接:
    • NSTL
    • Elsevier

    Methods for the estimation of sampling sufficiency in urban forest inventories: The case of non-patterned compositions of trees on sidewalks

    Crovador Junior S.A.Vendruscolo E.Stepka T.F.Bobrowski R....
    11页
    查看更多>>摘要：? 2022 Elsevier GmbHSampling inventories are strategies to gather qualified information for managing urban forests, given the scarcity of budgetary resources for a complete inventory and lack of public engagement to reduce costs. However, procedures for testing sampling sufficiency can be unspecified in researches related to urban forest inventories and do not follow any specific pattern. Hence, to determine the sampling sufficiency, we tested different variables related to the trunk, crown, number of trees, and species, focusing on different aims of an inventory of trees on sidewalks. At a level of 10% of the total number of plots, each measuring 50.0 m × 3.0 m, we performed a stratified inventory of a city streetscape whose composition and quality represents most South American cities, with a non-patterned tree compostion. Sampling sufficiency was analyzed considering a limit of error of 10% and 15% by using 12 different variables. The stratification process was necessary for most of the variables analyzed (p > 0.01), with errors ranging from 5.87% to 15.28%. Sampling sufficiency was achieved for 10% of the total population of trees on sidewalks, at a 10% error limit for seven variables: diameter at breast height (DBH), cross-section area, crown diameter, crown area, number of species, and number of species per square meter of sidewalk and per kilometer of the street. However, this result was influenced by the variability of the variables used to estimate sampling sufficiency. As it is not possible to achieve different goals (tree registration, benefits, and diversity) with just one variable like the number of trees per kilometer of street, the sampling sufficiency estimation should be based on the use of at least the DBH, crown diameter, number of trees, and number of species. It would be a better strategy to ensure more reliable data estimations for sampling inventories of trees on sidewalks.
      原文链接:
    • NSTL
    • Elsevier

    Effects of moderate drought on particles retention and physiology of three evergreen shrubs

    Xu P.Lin X.Zhang J.Chen J....
    11页
    查看更多>>摘要：? 2022 Elsevier GmbHModerate drought and vehicular exhaust particles are two common stressors to urban plants. However, it is unclear whether moderate drought affects particle retention by plants and whether stressors, such as moderate drought and exhaust pollution, can interact to affect plant performance. Here, we used an open-top chamber experiment to quantify particle retention per unit leaf area and physiological and biochemical parameters of Pittosporum tobira, Photinia × fraseri, and Euonymus japonicus ‘aurea-marginatus’ over 24 days. Total particle retention of E. japonicus ‘aurea-marginatus’ was significantly higher than the other two species by 1.10 times - 1.45 times. Moderate drought had significant, species-specific effects on particle retention, causing a 45.51% increase in P. tobira and a 51.22% decrease in P. fraseri, but no significant effect on E. japonicus ‘aurea-marginatus’. Superoxide dismutase was activated by drought or exhaust pollution for all plants, reaching its maximum (P. fraseri on the 6th day, the other two species on the 12th day), and then declining. The soluble sugar content of E. japonicus ‘aurea-marginatus’ increased during the first 12 days of stress, while it decreased in the other two species. After 24 days, the relative conductivity of stressed individuals was generally higher and the relative chlorophyll content lower except for P. fraseri. However, a significant decrease in net photosynthetic rate was found only in P. fraseri, and E. japonicus ‘aurea-marginatus’ exhibited the smallest decline in photosynthetic rate. In general, most physiological and biochemical indicators were more sensitive to combination between stressors than to either stressor alone. E. japonicus ‘aurea-marginatus’ may be the most suitable of the three species to be planted in moderate drought and polluted areas for its best particle retention and physiological performance.
      原文链接:
    • NSTL
    • Elsevier

    Re-think urban drainage following a SuDS retrofitting approach against urban flooding: A modelling investigation for an Italian case study

    D'Ambrosio R.Longobardi A.Rizzo A.Balbo A....
    17页
    查看更多>>摘要：? 2022 Elsevier GmbHIn the last decades, urban sprawl and soil sealing led to an increase of urban flooding phenomena. Sustainable Drainage Systems (SuDS) seem able to weaken stormwater-related criticalities, enhancing sustainability and city resilience. Relying on a detailed and feasible preparatory study of SuDS feasible retrofit design, based on a punctual identification of the areas suitable for retrofitting and the most appropriate combination of SuDS technologies, the reported research aimed to assess the effectiveness of a sustainable drainage approach in Sesto Ulteriano (Italy), an urban catchment suffering from stormwater management concerns. In particular, using the approach of a typical scenario analysis, this comparative modeling analysis involved SWMM5 for the assessment of the differences in the catchment hydrological behaviour between the mentioned specific and feasible SuDS retrofitting scenarios and a potential one, where non-specificity is considered for SuDS retrofitting location. Besides, the analyses focused on investigating how rainfall severity, areal extension and land use typical feature could influence the effectiveness of the sustainable redevelopment of the urban area. Results indicate that SuDS projects based on potential designs, which does not account for the feasible suds location, might result in a significant overestimation of the hydrological benefit. They showed, indeed, an improved hydrological performance, with average total volume reductions of the Combined Sewer Overflows up to over 70 % (retrofitting the 8.3 % of the catchment area), that is about 40 % higher than those obtained under the same areal extension by the feasible scenarios. Moreover, it was found that there could be an optimal SuDS retrofitting percentage above which additional hydrological benefits are undetectable. Land use, resulting in the variability in the degree of imperviousness necessarily associated to a variability in the retrofitting potential, also seemed to affect SuDS hydrological performance and for this reason should be included in an overall assessment. SuDS also proved to act successfully on the actual maximum percentage of nodes of the drainage network above a 0.7 filling degree threshold (about 52 % under 10-year return period rainfall) reducing it to 24 % with a feasible retrofitting involving the 8.3 % of the study area.
      原文链接:
    • NSTL
    • Elsevier

    Socio-ecological patterns of citizens science programs: The case of forestry observations in 3 central Mexico states

    Fernandez-Alvarez R.Gutierrez Ladron de Guevara M.D.J.
    10页
    查看更多>>摘要：? 2022Citizen science programs have been used to identify and address socio-environmental issues. Environmental participatory monitoring has been particularly effective in providing useful information for forest management and decision-making processes directed at formulating policy. However, recent studies have identified a recurrent participation pattern: citizen science appears to concentrate on affluent municipalities while excluding highly marginalized regions. For this research, a non-parametric analysis of the distribution of observations collected via iNaturalist, a citizens science app for participatory monitoring, is presented. Spearman correlations and a Kruskal-Wallis test were conducted for plant species observations in three states of central Mexico. Results suggest that participatory monitoring patterns are influenced by the marginalization degree of municipalities. Percentage of natural protected areas and forested surface per municipality were also analyzed as variables useful to explain the spatial concentration of participation. Evidence shows that, contrary to observed patterns of exclusion, marginalized municipalities with a designated natural protected area concentrate more participation. Participatory monitoring via citizen science programs is discussed as a valuable tool for developing countries challenged with restricted budgets for environmental management.
      原文链接:
    • NSTL
    • Elsevier

    Public views on green roofs and green walls in two major Asian cities and implications for promotion policy

    HUI L.C.JIM C.Y.TIAN Y.
    13页
    查看更多>>摘要：? 2022 Elsevier GmbHPublic views on green roofs and green walls (GRGW) have received little attention; hence, related policies could be detached from community needs and expectations. A comprehensive questionnaire was developed to compare perceptions of GRGW benefits and negative impacts and attitudes towards government GRGW promotion in Beijing and Hong Kong. Beijing residents reported stronger positive perceptions of benefits, weaker perceptions of negative impacts, and greater support to promotion measures. Beijing's more proactive and effective promotion efforts brought a better-informed citizenry with positive outlooks. Both cities appreciated promotion policies and strongly preferred advocating for GRGW quality. Public views were subsumed under three underlying factors: socio-demographic, living-environment, and greening-attitude. Principal component analysis and multiple linear regression detected city-dependent relationships between factors and perceptions. Senior and less-educated respondents in Beijing were less able to perceive the negative impacts. Younger and well-educated respondents in Hong Kong held a strong greening attitude and better recognition of benefits. GRGW perceptions were robust predictors of attitudes towards promotion policies in both cities. The implications for GRGW development vis-a-vis a city's socio-cultural context were discussed. The findings could help governments hone the publicity and policy aspects of GRGW promotion and development and fine-tune greening programmes to citizen preferences.
      原文链接:
    • NSTL
    • Elsevier

    Promoting pro-environmental gardening practices: Field experimental evidence for the effectiveness of biospheric appeals

    Lange F.Hermans Z.De Koster J.Smismans R....
    5页
    查看更多>>摘要：? 2022 Elsevier GmbHPro-environmental gardening practices can help to address climate change and biodiversity loss. However, little is known about how urban garden owners can be motivated to engage in such practices. In the present study, we tested the effectiveness of behavior change techniques for the promotion of pollinator-friendly garden flowers in a field experiment. Over a period of three weeks, we observed purchases of a pollinator-friendly seed mixture positioned in the checkout area of a Belgian wholesale store (total number of purchases = 162). Customers were exposed to posters that highlighted either the environmental benefits (e.g., conserving insect biodiversity) or the personal benefits (e.g., having a beautiful garden) of planting the seeds. In comparison to a control condition, seed purchases increased by 82% when environmental benefits were highlighted. The effect of stressing personal benefits was not significant. Our results indicate that pro-environmental gardening practices can be promoted by highlighting their environmental benefits at a point of decision.
      原文链接:
    • NSTL
    • Elsevier

    Adaptive planting design and management framework for urban climate change adaptation and mitigation

    Teixeira C.P.Fernandes C.O.Ahern J.
    12页
    查看更多>>摘要：? 2022Implementing measures to adapt and mitigate climate change effects in cities has been considered increasingly urgent since the quality of life, health, and well-being of urban residents is threatened by this change. Novel communities of plant species that emerge and thrive in the harsh conditions of cities may represent a promising opportunity to address climate change adaptation and mitigation through the planting design and management of urban green spaces. The objective of this study is to develop an adaptive planting design and management framework. The proposed framework is grounded on previous adaptive approaches and focuses on the opportunities emerging from novel plant communities in urban conditions. The framework comprises three main steps (1 – Climate change assessment, 2 – Plant species database, and 3 – Planting design and management procedure). A proposal on how the framework could be tested was developed for the city of Porto, Portugal. Still, the application of the framework can also be adjusted to other urban contexts, offering a starting point for experimentation and assessment of plants’ adaptation and mitigation capacities through design and management. As lack of knowledge and uncertainty about climate change limits global capacity to implement robust adaptation and mitigation strategies, building knowledge in an adaptive way and context-specific locations will be of paramount interest to tackle climate change in cities.
      原文链接:
    • NSTL
    • Elsevier

    Urban green space interaction and wellbeing – investigating the experience of international students in Berlin during the first COVID-19 lockdown

    Collins C.Haase D.Kabisch N.Heiland S....
    9页
    查看更多>>摘要：? 2022 Elsevier GmbHThis qualitative study explores the topic of mental health/wellbeing with reference to exposure to urban green space (UGS). It builds on previous research, which has highlighted the potential for green space interaction for supporting positive emotional and mental wellbeing, particularly in times of stress and uncertainty. Using this basis, the paper explores whether UGS interaction also helped to mitigate the negative mental health impacts brought about by the first COVID-19 lockdown. The specific focus is on students and expatriates living in Berlin, Germany as this population groupbecame increasingly vulnerable during this time as a result of uncertainty and restrictions in their daily lives brought about the enforced lockdown measures. More specifically, this paper investigates how a change in their daily routines created opportunities to interact with and experience UGS differently and how their emotional response and perception towards these spaces changed. Semi-structured interviews allowed for stories, experiences and emotions to unfold, which revealed that the participants’ gained an appreciation for the potential of UGS to support their wellbeing during a stressful and isolating time. UGS interaction also allowed them to form tangible memories of summer 2020 as it provided a safe arena for them to maintain social contact with friends outdoors, or to escape their home environment and experience respite and relaxation in a natural setting. The findings demonstrate that for this sub-group of the population UGS became a reliable constant and a valuable public health resource, which may also help to mitigate the long-term adverse mental health impacts of the pandemic.
      原文链接:
    • NSTL
    • Elsevier