A waste of time? On spatial planning and ‘wastelands’ at the city edge of Malmö (Sweden)

City edges have been associated with waste and wastelands for centuries. Refuse dumps have frequently been located at the outskirts of the city, and the metaphor of ‘wasteland’ has been used to depict landscapes at the urban fringe. In this paper, the relationship between actual waste dumps and metaphorical wastelands is brought forward to facilitate an analysis of landscape transformations at the city edge and to reveal the neglect of transient landscapes within spatial planning. In the first part of the paper the interactions between dumps and ‘wastelands’ at the city edge are discussed. In the second part, a case study at the edge of Malmö (in southern Sweden) is presented as an illustration of the transformative city edge and in particular the invisibility of this landscape in local planning. Major landscape transformations during the 20th century are examined along with representations of the area within spatial planning. The primary sources of information have been the archives of the local and regional waste management divisions, local planning documents and field studies. The case study illustrates how the present fringe landscape is constantly camouflaged by a green future; it is always about to be transformed, and therefore ignored. Consequently, an everyday landscape, with hazardous waste as well as places of great potential for recreation, has been disregarded for decades. The paper concludes with a discussion emphasising the importance to unveil such utopian representations, and the need to highlight the present day situation at the city edge.     

Understanding success in the context of brownfield greening projects: The requirement for outcome evaluation in urban greenspace success assessment

Many European governments place strong emphasis on integrated land use policies, particularly the re-establishment of public open access greenspaces through brownfield land regeneration. The UK Government considers the regeneration of brownfield land a prime tool for the delivery of regional economic regeneration, neighbourhood renewal and international biodiversity commitments. A number of failed brownfield greening projects question both the sustainability of such undertakings and whether greenspaces are fulfilling the functions they were designed for. Reliance on developer-, funding body- and site owner-centric notions of success in project delivery evaluation, to the exclusion of social and environmental impacts, has failed to highlight revenue requirements for management and maintenance to maintain function and quality. Brownfield greening project aims and objectives can be characterised as inputs, processes, outputs and outcomes using the general organisational ‘logic’ framework model. Applying this framework to six UK case studies, this research demonstrated that most greenspace aims and objectives are in fact ‘outcomes’ delivered in the medium and long terms following regeneration. The model is supportive of integrated, stakeholder inclusive monitoring over short, medium and long time periods. Physicochemical and social data from the case study sites were employed to present a comprehensive evaluation of site success. In each case, a lack of monitoring and evaluation – combined with insufficient supporting revenue funds – failed to highlight site issues, changes in local emphasis and ultimately a lack of success with respect to project aims and site sustainability. This research supports claims that capital funds to regenerate land must be supported by a revenue package for management and maintenance, that monitoring must be a funded activity; and, that monitoring and evaluation in support of the management cycle will promote the long-term sustainability, value and use of a greenspace.     

Spatial Concepts in Landscape Analysis and Policy: Some Implications of Globalisation

Globalisation accelerates the dynamics of the network society and economy, in which distant relationships become functionally more significant than local landscape relationships. This presents challenges and opportunities for landscape analysis. Using social scientific concepts of global and local space, and ecological concepts of hierarchy, two qualitative case studies are undertaken of urban fringe landscapes in Copenhagen, Denmark, and Christchurch, New Zealand. They reveal a convergence of landscape pattern over time, but this disguises significant differences in underlying socio-economic process and institutional response. There are several implications for landscape analysis and policy. First, there is a need for studies grounded in particular landscapes that acknowledge both local spatial landscape relationships and non spatial ‘global’ processes. Second, the transformation of landscapes through urbanisation provides a useful focus for the connection of landscape ecological understanding of landscape systems with social scientific understanding of human agency and social structure. Third, there is a significant challenge in how to develop local and regional institutions and policies that have the capacity to utilise and apply these diverse analytical perspectives.     

Informal urban greenspace: A typology and trilingual systematic review of its role for urban residents and trends in the literature

Urban greenspace is vital in fulfilling people's nature needs. Informal urban greenspace (IGS) such as vacant lots, street or railway verges and riverbanks is an often-overlooked part of the natural urban landscape. We lack a formal definition of IGS and a comprehensive review of knowledge about IGS and its role for urban residents. This paper advances a formal definition and typology of IGS that can be applied globally. Based on this definition, a total of 65 peer-reviewed papers in English (57), Japanese (7) and German (1) were reviewed. We analyzed this literature for its temporal trends, spatial patterns, studied IGS types, methods used and key authors, and summarized the individual research papers’ findings concerning IGS. Results show IGS plays an important role for urban residents, but also highlight limitations and problems in realizing IGS’ full potential. Research papers focused on perception, preferences, value and uses of IGS. Residents could distinguish between formal and informal greenspace. They preferred a medium level of human influence in IGS. The analysis of patterns in the literature reveals: a marked increase in publications in the last 20 years; a strong geographical bias towards the USA; and a lack of multi-type IGS studies including all IGS types. Publications outside of scholarly research papers also make valuable contributions to our understanding of IGS. Our results suggest IGS is emerging as an important sub-discipline of urban greening research.     

Enjoyment and fear in urban woodlands – Does age make a difference?

Urban dwellers experience conflicting thoughts and feelings about urban woodlands; valued for their natural qualities, the relief they provide from the stress of modern urban living and the opportunities they afford for children's play and exploration. At the same time the seclusion inherent in this type of urban greenspace seems fraught with risk from crime, vandalism and abuse. Whilst many of these characteristics are well-researched, less is known about the differing perceptions of particular social groups. This study aimed to explore the ways in which age affects urban dwellers’ aspirations, values and fears concerning the woods, and woodland accessibility, focusing on the views of elderly people (aged over 65). This pilot study was based in Norfolk Heritage Park, an urban park containing a variety of woodland settings located in Sheffield, UK. The questionnaire survey (participantsn=97) revealed that although walking is the most popular leisure activity, most respondents did not visit urban parks as often as they would like, regardless of age. Whilst many of the meanings associated with urban woodland (“relaxation”, “peacefulness”, “seasonal change”, “scenery” and “education”) were shared amongst age groups, it seemed that the elderly respondents particularly valued the woods for their links with the past, and opportunities for immersion in the natural world. Some respondents from all age groups had fears about their personal security in the woodland, and the concerns of the elderly were heightened by their perceived frailty, reduced mobility and sense of vulnerability; this age group had a corresponding need for particular measures to alleviate these problems. The study provides preliminary evidence for the idea that adults of different ages have differing perceptions and requirements in relation to urban woodlands. Due to the small sample size and other methodological issues, further research is needed to confirm and develop the findings.     

Reviewing eight years of Urban Forestry & Urban Greening: Taking stock, looking ahead

Since its launch in 2002, the journal Urban Forestry & Urban Greening (UFUG) has welcomed research from a range of disciplines and perspectives, with the aim of enlarging the body of knowledge on topics related to use, planning, design, values, and establishment of urban and peri-urban woody and non-woody vegetation. Here, we present a review of all scientific contributions published in the journal's first eight volumes (159 in all), and provide suggestions for improving the future content of UFUG. A framework for review was developed based on the journal's Aims and Scope, which set out the journal's ambitions related to, e.g. scientific diversity and international scope. The journal's achievements until now were assessed by analysing all scientific contributions for type of paper, type of green space, research theme, type of science, research method(s), and nationality of first author.Our review shows that the large majority of the contributions have been research papers. Regarding type of green space studied or considered, the overall green structure, woodland, as well as trees have been well covered, with parks having been studied much less. When looking at research themes, UFUG's envisaged variety of topics is evident. The physicality of green space, green space management, and the experience of green space have been given most attention, with less attention for valuation and governance aspects. Most UFUG contributions have been rooted in the social or natural sciences, with about one fifth of all papers involving more than one discipline, and the humanities being almost absent. Scientific diversity can also be seen from the wide range of research methods applied. The journal lives up to its international scope, with a large number of countries present. However, most first authors have been based in Europe and North America, with the USA and Scandinavia being particularly dominant.For the further development of the fields of urban forestry and urban greening, it is important that UFUG helps foster scientific debate and advancement. This will require greater focus on review papers, meta-studies, short communications, and on theoretical and methodological issues in general. Thematically, several relevant topics within urban forestry and urban greening, such as organisational aspects of green space management, could be given more attention. Also, normative issues such as the common understanding of ‘green’ as something inherently ‘good’ need to be addressed more critically.     

Critical upscaling. How citizens’ initiatives can contribute to a transition in governance and quality of urban greenspace

Studies show that municipalities often develop a type of urban greenspace that is rather uniform in its shape and use. Citizens’ initiatives develop different types of greenspace. This article uses concepts from transition studies and identifies what happens during a citizens’ initiative in urban greenspace in the Netherlands in terms of transition of municipal management and development and how these initiatives can lead to a change of practices of the municipality. A single, qualitative study of Diepenheim Inside-Out-Forest in the Netherlands as a critical case is presented, based on 8 semi-open interviews. The study gives insight in how the municipality has changed in relation to this one case, and how such transition of ‘regime’ takes place. The study explains how the different benefits that arise in a greenspace development and management initiative relate to the ‘critical knowledge’ and ‘situated knowledge’ of the actors involved and that the quality of urban greenspace is very much the result of that knowledge. ‘Fit and conform’ and ‘stretch and transform’ are usable strategies for the empowerment of such initiatives through sharing of resources, and policy advocacy by ‘critical niche’ innovators.‘Regime’ is not uniquely a feature of the local state but also of market parties and citizens themselves with their own values and routines. A change among all parties seems needed if greenspace is to be developed, managed and used differently.     

The impact of greenspace size on the extent of local nocturnal air temperature cooling in London

Urban greenspaces can provide a significant cooling service, which extends beyond the greenspace boundaries. Consequently, greenspaces are recognised for their ability to locally reduce the urban heat island, a phenomenon that has negative implications for the thermal comfort and health of urban citizens. However, the amount of cooling provided by a greenspace and the distance over which that cooling extends depend on factors such as greenspace size and characteristics. Based on data collected in and around eight London greenspaces, with areas ranging from 0.2 to 12.1 ha, this work models the distance and magnitude of cooling provided by each greenspace and defines the relationships between cooling extent and the size of greenspace or the areas of tree canopy and grass. Such data, illustrating the value of expanding the area of urban greenspaces and explaining how cooling relates to greenspace size/coverage characteristics, will be of use to urban planners and climatologists concerned with finding solutions to the urban heat island. Modelling was statistically valid on calm warm nights (with mean air temperatures ≥10 °C and wind speed ≤3 m s⁻¹). On those nights, cooling distance increased linearly with increasing area of greenspace, tree canopy and grass, but the relationship between those factors and the amount of cooling was non-linear. Cooling distance was most strongly related with tree canopy whereas the amount of cooling was most strongly linked to the grass coverage. Our results suggest that a comprehensive cooling service on calm warm nights within cities with similar climate/characteristics to London may come from greenspaces with 3–5 ha, situated 100–150 m apart.     

城市道路坡面绿化设计及实例分析——以重庆市奉节快速通道边坡为例

坡面绿化是以保护环境和工程防护为目的,利用各种植物来保护坡面的一种立体绿化形式。由于城市道路景观在城市景观中的重要地位,坡面绿化的应用显得尤为重要。以重庆市奉节县快速通道一侧的坡面绿化为例,简单介绍目前城市道路绿化中的坡面绿化。     

Urban greenspace access,uses, and values: A case study of user perceptions in metropolitan ravine parks

Urban greenspaces provide critical ecosystem services to urban area residents. While urban greenspaces provide a range of ecosystem services, cultural ecosystem services may be the most prominent to residents. Cultural ecosystem services provide benefits through educational, recreational, social, and spiritual opportunities. More knowledge is required about greenspace users’ perspectives of their local greenspaces, which will enrich park planners’ knowledge of the preferences, concerns, and potential points of conflict that greenspace users experience. To help increase this knowledge, we conducted a survey with closed and open-ended questions and supported it with a park audit and photographic evidence. As a case study, data were collected in six ravine parks in the City of Toronto, Canada. Ravine parks were of particular interest as they are a unique form of socio-ecological greenspace that have varied management goals which on occasion may differ from some user preferences and values. Quantitative data were analyzed with analysis of variance and chi-square tests of independence, and qualitative data were analyzed with conventional qualitative content analysis. Our results highlight that current ravine park users vary widely in their characteristics and the values they pursue through their park access. While the range of ravine park types accommodates some of this variability, there is also conflict between ravine park users with different values and expectations. We are offering a series of recommendations addressing these findings and hope that insights from this deep and rich case study will be of use to other forested, urban greenspaces under similar conditions.     

Spatial variations of plant species diversity in urban soil seed banks in Beijing,China: Implications for plant regeneration and succession

The near-to-nature urban forestry concept and practices are widely recognized for urban greening, urban ecosystem restoration, urban greenspace management for biodiversity conservation and ecosystem services provision. However, the regeneration and succession of urban vegetation are rarely studied due to the complex settings of the urban environment. To this end, we conducted a large-scale field investigation in the metropolitan area of Beijing, China to explore the spatial variations in plant species composition and diversity in soil seed banks, and their similarity to the aboveground vegetation to assess the potential of urban plant regeneration. Overall, 657 vegetation and soil sampling plots from 219 grids, measuring 2 km × 2 km each, were investigated within two perpendicular 10 km wide transects running across the urban center in north-south and east-west directions within the 6th Ring Road of the city. We recorded a total of 102 plant species in soil seed banks, including 13 tree species, 10 shrub species, and 79 herb species. We found that the soil seed bank species diversity and its similarity to that of the aboveground vegetation communities decreased significantly with the urbanization intensity. Higher urbanization intensity is typically associated with increased human management and a reduction in Greenspace Area (GSA). Soil seed bank species richness increased significantly when GSA exceeded 45 % and the similarity of species composition and diversity between soil seed banks and aboveground vegetation communities was the highest in forest parks. This suggests that habitats under forest park management are more conducive to plant regeneration. Soil seed bank species diversity first increased and then decreased significantly with increased distance to the city center, whereas the species similarity between the soil seed banks and the aboveground vegetation communities showed little change with the ring roads going out. The results of this study have important implications for further understanding the potential for urban vegetation regeneration and sustainability, which have significant implications for urban biodiversity conservation and restoration.     

Mapping global urban greenspace: An analysis based on open land-cover data

Urban greenspace plays a positive role in improving the urban living environment, and thus extensive studies have paid attention to the mapping of urban greenspace for various applications. Recently, open and high-resolution land-cover (LC) data have been viewed as essential sources for urban greenspace mapping. However, few studies have performed a global-scale analysis; moreover, as there are commonly different LC types in an LC dataset, few studies have investigated how the definition or selection of different LC types as greenspace impacts urban greenspace mapping. Therefore, this study aims to investigate the spatial pattern of urban greenspace at a global scale and the impact on selecting different LC types for urban greenspace mapping. We employed two global open datasets (FROM-GLC10 and GHS-UCDB) and identified 13,079 global urban areas. Various LC types that potentially relate to urban greenspace and three different selections of LC types were analyzed. Results show that: 1) The spatial pattern of global urban greenspace may vary with the use of different selections; 2) The impact of whether or not to select each LC type as urban greenspace relates to not only the LC type itself but also the geographic locations. The findings may benefit urban planners and designers to select proper LC type(s) for urban greenspace studies.     

Urban greenspace delivery in Hong Kong: Spatial-institutional limitations and solutions

Hong Kong has developed an ultra-dense urban form dominated by buildings and roads with inadequate urban greenspace (UGS). Analyzing the fundamental constraints to UGS provision offers hints for improvements which are relevant to other compact cities. Twenty-five current issues regarding institutional and spatial limitations were evaluated with reference to three themes: open-space planning standards, urban-design guidelines and urban-greening governance. They were studied by interpreting relevant parts of government documents spanning the 1980s to 2015, map analysis, and field assessments. UGS standards of selected cities, and extensive research findings and practices reported in the literature specific to the respective constraints, have been enlisted for comparison and as the basis for formulating recommendations to improve delivery quantity and quality. The low local supply at merely 2.84 m²/person is tied down by outdated planning standards and policies which have remained unchanged for eight decades. UGS planning, design and management could be enhanced based on urban ecology and landscape ecology principles and best international practices, with suitable adjustments catering to local circumstances and the inordinately tight urban fabric. The package of suggested solutions in relation to the 25 institutional and spatial constraints could be considered for applications in other cities with compact precincts or undergoing densification to forestall problems and resolve difficulties.     

Landscape Ecology – towards a unified discipline?

Contemporary landscape ecology is not unified at all.There are historical, geographical and biological reasons for the lack of unification, as well as differences between science and application. The search for a unified theory of landscape ecology should consider previous concepts such as ‘landscape diagnosis’ and ‘landscape functions’ which were elaborated in Central Europe. Because of the various aspects in a landscape (components, processes, relations), landscape ecology should be regarded as a multidisciplinary, better a transdisciplinary, science where different views and approaches are involved in a holistic manner. The principle of complementarity is helpful to understand and describe the landscape. As a crucial step, the transformation of natural science categories to categories of the human society is brought out. This is realized by land(scape) evaluation and by the elaboration of goals (visions) of landscape development.This revised version was published online in May 2005 with corrections to the Cover Date.     

Implementing urban greening aid projects – The case of St. Petersburg, Russia

Recent years have seen the introduction of the concept of urban greening, defined as embracing the planning and management of all urban vegetation to create or add values to the local community. Green-space development has become recognised by international agencies and donors as important tool in improving the quality of urban livelihoods and urban environment. This paper evaluates an example of an urban greening aid project, carried out by Danish and Russian partners in the city of St. Petersburg, Russia. The project aimed to contribute to conservation and development of the cultural–historical, social and ecological values of St. Petersburg's urban green areas by implementing a structured, socially inclusive, well-informed planning and management approach. The project had three main components: (1) the development of a GIS-based information system to assist green-space planning and management; (2) on-site improvements in selected green areas and (3) awareness raising and public involvement activities. Ex post evaluation of the project showed that in spite of the limits of time and resources, important results were achieved. A more strategic approach to urban green-space planning and management, as promoted by urban greening, was adapted by some of the Russian project partners. Achievements also included notable physical improvements to one park. But the main project impacts were improved communication and collaboration between the local park department and local academia, as well as expertise developed in running a complex urban greening project. The project failed, however, in its public involvement ambitions.Moreover, the project should have facilitated discussion on some of the current premises of urban green-space planning and management in St. Petersburg, which insufficiently consider changing values and public preferences related to green spaces.     

Porous landscapes – The case of Greater Copenhagen

Many blueprints for urban development argue for the benefits of a sharp distinction between rural and urban space. While such planning designs have been quite successful in maintaining a physical distinction between rural and urban, major transformations of the socio-economic environment in peri-urban areas are creating a more diffuse and porous interface.This paper examines socio-economic consequences of the current transformation of peri-urban areas. Three themes are selected for analysis: changing economies, overall impact of urbanisation as perceived by the individual farm owner and the degree of their local orientation and engagement. Based on case studies in Greater Copenhagen, longitudinal trends and details of the current situation are analysed. In addition, by differentiating between newcomers and long-term residents, possible future changes are indicated. The analysis shows that the importance of agriculture has declined, whereas other gainful activities and residential use have increased. Thus, the functions of the local economy and community are changing. An increasing proportion of the farm owners appreciate the proximity to urban agglomerations (public services, shopping, public transport, social relationships and markets), but this location also has drawbacks, for example in terms of uncertainty concerning future urban development, inconveniences for agricultural production and problems related to public access to private properties.Differences between newcomers and long-time residents are identified. Newcomers without any agricultural background are frequent. They often work outside the municipality and are more frequently personally involved in other gainful activities on-farm. Newcomers perceive more problems related to people accessing the farm properties and are less involved in local activities. In combination, these trends indicate possible future increase in conflicts between farm owners and the public and that the local engagement may be declining. The analysis, however, also shows similarities between newcomers and long-time residents, and therefore does not indicate the development of two cultures or “two nations”. Rather, the urban fringe population is becoming more heterogeneous, ranging from full-time farmers to residents with their social and professional network outside the local area or people engaging in non-agricultural business on-farm.     

Contested construction of nature for city fringe outdoor recreation in southern Sweden: The Arrie case

This article deals with the process of change from industrial land to recreational area on a 60 ha piece of land 12 km southeast of Malmö, southern Sweden, called Lake Arrie. The area is an abandoned gravel quarry in the midst of an agricultural landscape. We present a short background and the current situation in Arrie, setting out to capture the tendencies of the contemporary construction of nature for outdoor recreation. We then move on to discuss the salutogenic aspects of outdoor recreation, and how these can be traced in the actual landscape at Arrie. Furthermore, we open the discussion on diversity as a cherished post-modern ideal both in nature and culture. Different interests and ideologies may cause conflicts in the planning process. To capture the multitude of voices emanating among stakeholders, the process to extract local opinions through participatory processes is presented. The social and political categorisation of an area reflects the needs of a changing society. In the early industrial era, the area was an enclave of industrial ground in a completely rural setting. In the post-industrial era, it turned into a ‘wasteland’, open for nature to recolonise. This type of landscape is difficult to categorise, being an ‘inbetween-land’, neither nature nor culture, perceived as ephemeral and inferior. At the same time, the city sprawled closer, with the semi-urban populations’ need for outdoor recreation. In future, the former industrial ground will be perceived as an enclave of nature in an urban setting. When the former products of the area responded to the industrial need for gravel and limestone, the contemporary ‘products’ respond to emotional needs.     

Urban non-timber forest products stewardship practices among foragers in Seattle,washington (USA)

Our research seeks to expand the concept of urban environmental stewardship to include the everyday stewardship practices of urban nontimber forest products foragers. Ethnographic data from 58 urban foragers and 18 land stewards in the city of Seattle (USA) revealed that foragers reported using a variety of practices to enhance and minimize negative desirable species and their habitats. Many of these practices were identical to those practiced by restoration volunteers in formal programs and align with Seattle Parks Department management objectives. Foragers actively sought to learn more about what practices are sustainable; many mentored others in sustainable harvesting practices. Most foragers emphasized the importance of treating plants and their environment with respect. The land stewards voiced some concerns about foraging in city parks, but most were cautiously supportive of opening up the parks to foragers. The study results suggest that an opportunity exists for park managers to develop alliances with foragers so as to leverage foragers’ everyday stewardship practices and accomplish some of their park restoration objectives. Doing so will require park managers to acknowledge the positive contributions that humans can to make novel ecosystems and foragers to develop or strengthen self-regulation norms.     

Residents’ use of remnant natural vegetation in the residential area of Järvafältet, Stockholm

In growing cities, there is a demand for development areas, which poses a threat to existing green areas. Therefore, it is of interest to know to what extent different types of green areas are used by residents. In the suburb of Järvafältet, situated 15 km outside Stockholm city centre, inhabitants’ use of patches of remnants of original natural vegetation in green areas has been studied by momentary observations from fixed points over the periods 1978–1982 and 2002–2004. The number of people, sex, age, type of activity, and place of that activity were noted. Overall, there has been a significant increase in the amount of use of these types of recreation areas between the two periods. The use by organized groups, as well as by adult walkers, runners and cyclists, increased the most, while individual children's play decreased. Almost every other child observed was found to be partaking in organized school or day nursery group activities. Children belonging to organized groups were seen as frequently in areas at a distance of less than 100 m from the houses as between 200 and 400 m from the built-up area, while children not participating in group activities were seen much more frequently in the areas closest to buildings. These types of green areas were used more by children and young people than by adults. This implies the likelihood that the use of these areas for recreation is underestimated in outdoor recreation inquiries and interview studies, where children are not usually included. Residents’ use of areas with remnant natural vegetation in cities shows that these areas have a recreational value as well as with other values. This makes them important to take into consideration in the planning and design process. Small areas close to residential areas need to be considered.     

Multiple factors shape the interaction of people with urban greenspace: Sweden as a case study

This study identifies and analyses multiple factors that impact people’s interactions with urban greenspace in Sweden. An unrestricted, self-selected online survey was used to collect the data. The survey questions were related to individual characteristics of respondents, including socio-demographic characteristics, self-reported nature connectedness, and self-reported constraints to greenspace usage; perceived characteristics of urban greenspace, including its availability, quality, and accessibility, and benefits and problems; and preferences of respondents regarding types of urban greenspace and activities. Additionally, several spatially explicit variables were included in the analysis. A total of 2806 respondents from 208 (of 290) municipalities completed the survey. Our findings indicate that greenspace users are highly heterogeneous and utilise diverse green spaces along the urban-peri-urban gradient for various benefits. The statistical analyses identified 61 explanatory variables that affect the frequency of interactions with urban greenspace. In addition, we identify key factors that shape critical differences between frequent and infrequent urban users, such as nature connectedness, perceptions of urban greenspace functions, and their perceived accessibility. Our results highlight the complex challenge facing urban planners and managers of green spaces, who have to consider and integrate a vast array of factors influencing the willingness of increasingly diverse urban populations to interact with greenspace.