Urban Green Spaces Research Articles

An analysis of the potential for military zones to be used as green spaces in the Ankara metropolitan area (Türkiye)

Urban periphery belts play a crucial role in preserving the morphological characteristics of cities. These belts often encompass various zones, including designated Military Zones, each of which contributes to structural integrity of urban spaces. Due to the vast expanse of military areas and associated security concerns, the relocation of these zones to the city’s outskirts is a recurring topic of discussion in Türkiye. Presuming the occurrence of such a possibility, how these zones will transform into functional urban spaces in terms of urban morphology is going to be vital. This study focuses on the potential of converting military zones in the urban periphery of Ankara into green spaces, highlighting the importance of such transformations for urban ecology and the preservation of green areas. To identify the existing green spaces within the military zones of the study area, vegetation indices such as Sentinel-2’s NDVI, NDMI, GCI, RVI, NDBI, and NISI were utilized, and comprehensive green space analyses were conducted. The findings indicate that the current green space allocation per capita in the region is 5 m2. However, when military zones are incorporated as regional parks alongside existing urban green spaces, this figure increases significantly to 14.4 m² per person. Additionally, to determine the accessibility of military zones converted into regional parks in terms of walking distance and their serviceable radius, several analyses have also been conducted. The conversion of military zones into regional parks and the development of related projects in Ankara would provide substantial benefits from a public policy perspective.

A Coupled CA Urban Development Model (UDM) and Urban Fabric Generator (UFG) for the Assessment of Climate Hazards on Future Urban Development

Abstract. Cellular Automata (CA) spatial models have become a de facto means by which to simulate future scenarios of land use activity, particularly urban development. Increasingly, such models are being employed within large scale climate impact, adaption and resilience studies to provide future scenarios of land use change and urban development, facilitating the calculation of the economic impact of future climate hazards and development land use adaption options. However, many spatial CA models only provide information on whether land has undergone a transition from one use/activity to a new one. In the case of urban development, they are unable to provide information on the spatial pattern of new development at an intra-cell level of spatial fidelity. However, in many cases such information is important as the spatial impacts of hazards and the adaption and resilience of new urban development will be dependent on the precise spatial configuration of buildings, roads and urban green space. In this paper an Urban Fabric Generator (UFG) is presented that takes the outputs of an Urban Development Model (UDM) and simulates plausible spatial configurations of buildings, roads and urban green space. The utility of the UFG is demonstrated via two flooding case studies, where generated spatial patterns of urban form are used to parameterise a hydrodynamic pluvial flood model that evaluates the impact of future climate driven rainfall on property damage and the utility of infrastructure investment with regards to improving surface water flood resilience.

A városi zöldövezetek jelentősége és romániai helyzete

With the expansion of cities, green spaces are becoming increasingly important, significantly enhancing people's quality of life on multiple levels. In her study, Cristina Humă addresses the concept of urban green spaces and examines the situation in Romania from a social policy perspective, highlighting their importance in sustainable urban development. The analysis indicates that green areas have started to increase in Romania, but many localities still do not meet European standards, emphasizing the need for further development.

The perception of urban green space during the COVID-19 pandemic: The case of Wrocław

Green spaces are integral to urban landscape, serving ecological, health, and recreational functions. During the pandemic, urban green spaces were crucial for enabling safe social distancing and enhancing well-being. This study delves into the perception, accessibilities, and qualities of urban green spaces in Wrocław during and after the pandemic. A survey was conducted to understand causes and effects of diverse usage of the urban green space, assessing changes in usage frequency before, during, and after lockdown, as well as public awareness of benefits associated with green spaces. Proximity to green spaces emerges as a key factor as people prefer easily and quick access to these areas. The study also noted a partial modification of social behaviour and increased social and ecological awareness. The results reveal evident development of new daily habits. Although the beginning of the pandemic led to discomfort, adaptive behaviours soon followed, changing daily routines and previous leisure activities. Given the findings on availability and adequacy of green spaces, it is advisable to rearrange these areas to meet the diverse needs of inhabitants.

Mapping wild nature areas to identify priority areas for urban rewilding in cities: A process-oriented approach

Urban rewilding initiatives are gaining traction in cities, yet little remains known about the spatial opportunities for transitioning greenspaces into rewilding sites. This paper advances a process-oriented framing of urban wild nature areas (WNAs) and proposes a novel methodological approach for mapping existing WNAs at the city-scale, thereby shedding light on the potentials for urban rewilding across greenspace types and urban environments. Using Vienna as a case study, we identify WNAs as greenspaces predominantly shaped by natural succession processes and devoid of vegetation management. NDVI timeseries derived from Sentinel-2-satellite data for the period 2017–2022 are processed using a Random Forest algorithm to distinguish between unmanaged and managed vegetation annually and integrated into a multi-year composite map of ‘urban vegetation management intensity’. Based on this map and a set of objective cut-off values, 1298 WNAs are identified, representing 29.5 % of the city’s total urban greenspace and 14.9 % of the city’s total area. WNAs are distributed across diverse urban settings and greenspace types, with the majority being found in formal greenspaces such as forests, meadows and parks, and low-density built-up areas. The key strength of the process-oriented approach lies in its ability to detect WNAs dominated by natural succession, regardless of historic origin, greenspace type, and governance structure, thereby providing a baseline against which the full potential for urban rewilding can be evaluated. We demonstrate the methods’ utility in identifying potentials for urban rewilding, emphasising the importance of directing rewilding efforts towards residential greenspaces, urban parks, and street greenery, especially in densely built inner-city districts.

Inequalities in urban thermal and greenspace exposures: A case study for China’s Greater Bay Area from 2010 to 2020

Inequalities in urban thermal and greenspace exposures: A case study for China’s Greater Bay Area from 2010 to 2020

Study on the Functions and Design Techniques of Urban Parks in the Context of Post-1949 Urban Development - Case Study of Xian, China

The urban park is an important part of the urban green space system and an essential factor in promoting sustainable development and urban transformation. The functions and corresponding design methods of urban parks also reflect the background and development requirements of different periods. In response to the requirements of urban development in different periods, parks in Xian have gradually changed from a single function of recreation to a function of cultural exchange and, in recent years, to a function of habitat protection. In order to better discuss and analyze characteristics and provide inspiration for further study, the article aims to divide the period from 1949 to 2020 into four stages according to the historical background, and make a comparative analysis according to the corresponding overall planning requirements and examples. The study will combine data with field visits to representative parks from four periods and analyze the relevance of their design and impact to the requirements of the times.The renovation of ancient gardens lays the foundation for the construction of parks, the protection and development of cultural heritage sites increases the role of parks in cultural construction, and the development and construction of ecological wetlands increases the function and role of parks in the construction of ecological civilisation. It can be concluded that the function of the park is also correspondingly related to its design approach.

Investigating effect chains from cognitive and noise-induced short-term stress build-up to restoration in an urban or nature setting using 360° VR

Population growth and increasing urbanization leads to growing exposure to traffic noise and a decline in accessible green spaces that could promote restoration from noise-induced stress. The objective of this virtual reality laboratory study was to investigate the effect chains of noise and cognitive demand on the build-up of short-term stress, and subsequent restoration in either a natural green or urban built quiet space. Participants were first exposed to road traffic noise of different sound pressure levels (LAeq of 35, 55, or 75 dB), being randomly assigned to passive listening (low cognitive demand) or concurrently performing cognitively demanding tasks (high demand). The stress phase revealed higher levels of perceived stress as well as tonic skin conductance for the high demand over the low demand group, independent of noise exposure. Increasing noise exposure was associated with elevated noise annoyance ratings and lower self-assessed wellbeing. In the subsequent restoration phase, all measures of perceived restoration indicated a clear advantage for green over non-green spaces. Further, participants from the high-demand group who were immersed in the green restorative space displayed significantly lower skin conductance levels than those in the urban built spaces. The findings suggest that exposure to natural green spaces is beneficial for psychological as well as physiological restoration from short-term stress induced by noise and cognitive demand. Our study underlines the important beneficial role of urban green spaces, particularly in densely populated, noisy urban environments.

Urban green spaces with high connectivity and complex vegetation promote occupancy and richness of birds in a tropical megacity

Urban growth often leads to land-use changes that result in biodiversity loss and reduced human benefits. In urban zones, green areas facilitate physicochemical processes (such as carbon capture, reducing environmental temperature and noise pollution), offer multiple benefits to human beings (e.g., water filtration and purification), and support numerous vertebrate populations, including birds. In the tropics, the capacity of green spaces to maintain bird populations is regulated by characteristics of these areas (e.g., vegetation structure) and environmental seasonality. In order to generate ecological knowledge to help conserve bird diversity in large urban settlements, this study aimed to (1) identify the most influential variables on the distribution of bird species in green areas of a tropical megacity, and (2) assess how bird richness varies between the dry and rainy seasons. Across two dry and rainy seasons between 2021 and 2022, detection records of 108 bird species were obtained from 101 green areas. Air temperature and sampling time were the primary factors influencing bird detection. Bird occupancy and richness were higher in parks near other green areas in first dry and increased with tree richness during the rainy seasons. Floral abundance explained the occupancy and richness in the second dry season. In 2021, the highest richness was observed during the dry season, while in 2022, the highest richness was estimated during the rainy season. These findings highlight the importance of resource availability and spatial arrangement in urban green areas for bird diversity, offering insights for conservation and maintaining ecosystem benefits in urban environments.

Spatial heterogeneity and interaction effect of urban blue and green spaces on housing prices

Rapid urbanization presents policymakers and planners with the challenge of balancing public open spaces design with the conservation and improvement of natural resources. A comprehensive understanding of the land economic value of urban blue-green spaces (UBGS) holds immense significance for urban sustainable development, urban spatial justice and the promotion of human well-being. In this study, the MGWR model is employed to discuss the heterogeneous effects of UBGS on housing prices in Hangzhou. Additionally, the interaction effect between blue space and green space was examined at the district level, and the specific locations and spatial patterns were identified. The results show that (1) different types, features and accessibility of UBGS have different degrees and spatial scale of effect on housing prices, and will be affected by other attributes of UBGS; (2) in 30.92% of the main urban area of Hangzhou, the effect of blue spaces and green spaces on housing prices exhibits an interactive effect. The spatial patterns are divided into blue-green positive synergistic, antagonistic and negative synergistic regions; (3) green space has positive and negative effects on housing prices, while blue space has positive effects on housing prices at the regional level. The existence of water bodies can promote the positive effect of green spaces on housing prices or alleviate the negative effect. The results indicate that planners must transcend the singular focus on blue or green space planning and instead consider both in an integrated manner. This outcome can provide valuable references for UBGS planning.

Urban heterogeneity of the trade-offs between exposure to greenery and walking distance in children's home–school routes

Greenery fosters sustainable outdoor environments and promotes walking and healthy lifestyles. Greening children's home–school routes can be seen as an environmentally sustainable solution that enhances their daily interaction with nature. However, the uneven distribution of greenery and route networks within cities results in varied opportunities for pedestrians, including children, to experience greenery.This study evaluates the urban heterogeneity of trade-offs between exposure to greenery and route length. We focus on the shortest and greenest hypothetical home–school routes for all children in the city. For this purpose, we conducted a spatial analysis using multiple spatially explicit data sets on primary schoolchildren, pedestrian street networks, and high-resolution urban green space maps, with Łódź (Poland) as the case study city.Children who opt for the greenest hypothetical routes instead of the shortest could increase their exposure to greenery by 18%. However, maximizing exposure to greenery requires choosing routes 9.5% (46 m) longer than the shortest alternative. The trade-off between the shortest and greenest home–school routes is more pronounced for children in the urban core area compared to other city zones. This urban heterogeneity should be considered when allocating new greenery to support active transportation.

Greening South Asian cities for health: a study of urban green space usage and physical well-being

Greening South Asian cities for health: a study of urban green space usage and physical well-being

Research into the Influence Mechanisms of Visual-Comfort and Landscape Indicators of Urban Green Spaces

Urban green spaces play a crucial role in providing social services and enhancing residents’ mental health. It is essential for sustainable urban planning to explore the relationship between urban green spaces and human perceptions, particularly their visual comfort. However, most current research has analyzed green spaces using two-dimensional indicators (remote sensing), which often overlook human visual perceptions. This study combined two-dimensional and three-dimensional methods to evaluate urban green spaces. Additionally, the study employed machine learning to quantify residents’ visual comfort in green-space environments and explored the relationship between green spaces and human visual perceptions. The results indicated that Kitakyushu exhibited a moderate FCV and an extremely low Green View Index (GVI). Yahatanishi-ku was characterized as having the highest visual comfort. Tobata-ku demonstrated the lowest visual comfort. Natural, GVI, openness, enclosure, vegetation diversity, landscape diversity, and NDBI were positively correlated with visual comfort. FCV and ENVI were negatively correlated with visual comfort. Vegetation diversity had the most impact on improving visual comfort. By integrating remote sensing and street-view data, this study introduces a methodology to ensure a more holistic assessment of green spaces. Urban planners could use it to better identify areas with insufficient green space or areas that require improvement in terms of green-space quality. Meanwhile, it could be helpful in providing valuable input for formulating more effective green-space policies and improving overall urban environmental quality. The study provides a scientific foundation for urban planners to improve the planning and construction of healthy and sustainable cities.

Identification of optimal locations for green space initiatives through GIS-based multi-criteria analysis and the analytical hierarchy process

Urban green spaces play a vital role in enhancing the well-being of communities and mitigating environmental challenges such as air pollution and global warming. Despite their importance, effective models to allocate these green spaces are often overlooked, particularly in developing countries. This study utilises GIS-based Multi-Criteria Analysis and the Analytical Hierarchy Process to recommend optimal locations for green space interventions in Lilongwe City, Malawi, based on nine factors: population density, proximity to roads, slope, Digital Elevation Model (DEM), Normalized Difference Vegetative Index (NDVI), land cover, existing green space, proximity to water bodies, and nitrogen dioxide concentration. The results show that 0.57% (23,776 hectares) of Lilongwe city is highly suitable while 14.50% (604,596 hectares) is unsuitable for green space interventions, where population density was the most determining factor. The suitability varied across the city, with highly suitable areas predominantly located in the southern part. The study highlights the importance of informed decision-making in urban green space planning, setting a standard for equitable access to green spaces and sustainable urban development.

Influence of habitat management and selected environmental parameters on the ground-living communities of harvestmen (Opiliones) in the historical park in Rusovce (Slovakia)

City parks serve as valuable refuges for invertebrates in the urban environment, which are constantly exposed to human influence caused by management practices in the parks. Many harvestman species are suitable bioindicators for monitoring ecological change; however, their effective use in environmental assessment necessitates to expand the insufficient knowledge of ecological environmental specificities of their communities. We studied the diversity and dynamics of harvestman (Opiliones) communities in the historical park in Rusovce, situated in the southwestern part of Bratislava (Slovakia). Seven study sites were investigated, representing areas subjected to different management practices. The research was conducted from March 2019 to April 2020, using pitfall traps. We evaluated the impact of microclimatic variables (soil and air temperature), environmental characteristics (plant diversity and cover of vegetation layers, age of forest stands, thickness of the litter layer), and management practices on the structure of harvestman communities. The study revealed the response of specific harvestman species to temperature variations, emphasizing the importance of microclimatic conditions. Environmental variables, such as the richness of plant species in the shrub layer, the cover of the herb and shrub vegetation layers, and the age of the forest stands, were identified as key factors that influence the dispersal of harvestman species. Furthermore, management practices, especially the presence of monoculture tree plantations, significantly affected the species composition of harvestmen. Examining the sensitivity of Opiliones, important bioindicators, to these factors is crucial for implementing effective conservation strategies in urban green spaces and anthropogenically influenced ecosystems.

Urban Greenspaces and Patterns of Common Mental Disorders in Ibadan City, Nigeria

Urban Greenspaces and Patterns of Common Mental Disorders in Ibadan City, Nigeria

Working hours influence preferences of residents for micro features of small urban green spaces

This study investigates whether duration of working hours affect residents’ preferences for the micro-features of Small Urban Green Spaces (SUGS), and explores differences across genders and visitation purposes. Little is known about this subject, yet it is crucial for creating more equitable green spaces. In phase 1, participants (n = 209; 30.9 ± 6.73 years, 59.3%male) were categorized by average daily working hours (0–8 h, 8–10 h, 10 h+), and rated 41 micro-feature images on their importance for visiting SUGS. Phase 2 included the top ten features ranked from phase 1, with participants (n = 256; 30.8 ± 5.12 years, 35.2% female) completing the Kano model survey to identify and explain the importance of features and different types of needs. Findings reveal a clear trend: extended work hours pivot resident preferences towards green space attributes promoting physical activity. For residents of 0–8 h valued aesthetic elements like sculptures and vegetation, while lighting became paramount for those with 8–10 h, and for those working over 10 h prioritized facilities for active engagement, such as playground equipment and slow runway. These distinctions provide valuable guidance for designing SUGS with diverse feature combinations that cater to the needs of residential areas with varying socio-economic backgrounds and occupational lifestyles, thereby enhancing urban livability.

The use of seaweed in the production of ornamental plants

Ornamental plants play a crucial role in urban green spaces by enhancing aesthetic value and providing ecological and economic benefits. They help improve air quality, support biodiversity, and contribute to environmental purification. The horticultural industry benefits from cultivating ornamental plants, it faces challenges such as soil health and environmental pollution due to high-yielding cultivars and chemical fertilizers. To address these challenges, integrating sustainable practices, such as using seaweed as an organic fertilizer, can provide solutions. Seaweed, rich in essential nutrients and growth hormones, improves soil fertility, plant growth, and resilience against environmental stresses. Studies have shown its effectiveness in enhancing growth parameters, mitigating salinity stress, and increasing yield and quality in various ornamental plants. However, the response to seaweed varies across species and conditions. To optimize its use, tailored application rates, combined sustainable practices, and continuous monitoring are recommended. Further research is also needed to develop comprehensive guidelines for its application in ornamental plant production.

Lighting Features Affecting the Well-Being of Able-Bodied People and People with Physical Disabilities in the Park in the Evening: An Integrated and Sustainable Approach to Lighting Urban Green Areas

This study focuses on the analysis of lighting in night conditions to explain what lighting in parks should look like and how parks should be lit from the point of view of people’s perceptions. It addresses the impact of the lighting configuration of urban parks on preference, safety, mystery, legibility, and contact with the environment. The feelings of wheelchair users and able-bodied people were measured. The respondents assessed park landscapes presented in visualisations that varied in terms of lighting features and spatial contexts. This research showed, inter alios, that the participants rated evenly lit spaces more highly than those featuring spot lighting. In unevenly lit spaces, the lighting of the surroundings turned out to be crucial import for able-bodied people, while for the disabled respondents, a combination of lighting of the surroundings and of paths was significant. For evenly lit spaces, path lighting is less important for disabled people than for those without disabilities. These insights can help researchers to look at lighting solutions in a more human-centered way and take into account the environment in which they are used. This allows the design of night lighting in parks to be socially sustainable and promotes access to urban green spaces for all citizens. The study emphasises that the provision of sustainable lighting in parks should take into account different social groups, making light a common good.

Factors impacting urban greenspace usage: new evidence from South Africa

This paper examines the factors that impact urban greenspace (UGS) usage in three urban parks in the city of Tshwane, South Africa. Guided by systems theory, we aim to determine how various cultural ecosystem services afforded by these parks influence usage with a particular focus on social relations, recreation, aesthetics, and spiritual value. Data for the study was collected using an online survey as well as online reviews of the UGSs from three different sources. Site visits were also conducted to verify the presence (or absence) of various tangible factors that could impact usage. Using correlation analysis, we determined that recreation was the primary cultural ecosystem service offered by these spaces that individuals consider when deciding whether to use an UGS. Moreover, UGSs that are accessible, perceptibly safe, and well-maintained generally attract park usage while UGSs that are perceived as being unsafe, neglected, and/or polluted generally deter park use. We conclude the study by making a series of recommendations that could encourage UGS usage in this unique context in South Africa.