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Public health is an essential urban issue attracting the increasing attention of scholars and decision-makers while urban planning is an important mechanism to promote health since mounting evidence has shown the planning elements, such as urban green spaces (UGS), could have a positive influence. In previous literature, the studies concerning the impacts of UGSs can be divided into two aspects: the first is to reveal the relationships between UGSs and health using statistical models based on self-reported data, while the second is to take their relationships as presumption and visualize the spatial distributions of UGSs in a geographical information system (GIS) to indicate the existence of health inequalities. I attempt to combine the two pathways, using GIS-based analyses to quantify and visualize UGSs, and subsequently employing the quantified indicators of UGSs to calculate their associations with public health by multiple linear regression (MLR) analysis in SPSS. The study describes a detailed methodology that could be taken as a generic approach to analyze other urban elements and services. A case study is conducted in Linköping central urban area with base areas selected as the spatial unit of analysis. As a consequence, although the elaborate relationships between different indicators of UGSs and public health are not directly provided by the regression models, the correlations between them are indicated to be weak and subtle and require larger samples to reveal. Potential improvements, including the application of panel data and other kinds of regression models, are also summarized for further research.

京都大学 / 新制・課程博士 / 博士(農学) / 甲第24908号 / 農博第2571号 / 新制||農||1102(附属図書館) / 京都大学大学院農学研究科森林科学専攻 / (主査)教授 柴田 昌三, 教授 北島 薫, 教授 小杉 賢一朗 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DFAM

As urban health challenges grow worldwide, the need for usable green space in cities also increases. Sedentary lifestyles, crowded urban areas, and the COVID-19 pandemic have all contributed to the need for more outdoor exercise space in recent years for all ages and communities. An assessment of green exercise space qualities and an identification of factors that determine how green spaces are used for exercise could lead to improved green spaces, increased use of those spaces and better overall physical activity and health outcomes for all population groups. Qualitative analysis of Malmö’s green exercise spaces examines the qualities of green spaces identified by the perceptions of residents in neighborhoods across the city, and then uses those perceptions in conjunction with determinants of green space use to find opportunities to make green spaces in the city more attractive and usable for exercise. Two interviews with officials from Malmö city government illustrate the city’s perspective of designing and creating green spaces. The determinants of use for green spaces are examined and analyzed based on the interview responses. These responses were analyzed using the Affordances and Determinants framework to find opportunities to make more high-quality use out of current green exercise spaces. A thematic analysis of city planning documents also provides longitudinal context to the topic. Barriers to accessibility and use of green exercise spaces were identified, as well as findings that would allow the city of Malmö to work more closely with residents to create usable green exercise spaces for all.

Malmö strives to become an attractive and sustainable city by 2030. Continued population growth is a major reason for the need to densify within the existing urban structures. But more inhabitants will also increase pressure on usage and demand for green spaces in the city. Green space is of importance for human well-being and health, especially in urban environments. However the importance of green space is being marginalised in current debate and urban planning, due to the intensive focus on densification. The relevance of green space as an environmental quality has neither been recognised sufficiently in discussions on environmental justice. Previous policy and research has not integrated the socioeconomic dimension when assessing green space distribution. Hence this case study aimed to investigate the socio-spatial distribution of green areas in Malmö. A theoretical framework was compiled including concepts on environmental justice, i.e. the equal distribution of environmental qualities among different social groups. Moreover concepts regarding access (public/private), distance (walkability) and size (utilisation) of green areas were considered. A quantitative analysis was conducted with secondary data. As no comprehensive data set covered more recent years, census data and spatial data from 2005 was used for further analysis. The data was processed and analysed with the help of a geographic information system (GIS). With this approach green space and green areas could be identified. Green areas were categorised according to the level of public access, the size and the respective recommended distances to homes. In addition several socioeconomic factors were extracted from the census data and visualised in GIS. Thus the least advantaged neighbourhoods that lacked various public green areas could be located. On the city level it could be identified that only 13% of the total land area were covered with public green areas, resulting in 46 sq m per inhabitant in 2005. In April 2011 the population of Malmö passed the threshold of 300 000. Assuming that the amount of green areas had not changed since 2005 (unlikely), every inhabitant would have had 38 sq m of public green area in 2011. Considering these numbers in a Swedish context reveals that Malmö is on the bottom line of green area provision. On the neighbourhood level the greatest deficit was found in the eastern parts of central Malmö (e.g. Ostervärn), covering a network of neighbourhoods further south (Norra Sofielund, Södra Sofielund, Almhög, Gullviksborg). In total 32 neighbourhoods were characterised by above average percentage of children, elderly, foreign born or population density. Moreover almost all neighbourhoods lacking green areas were characterised by below average income. The results showed evidence for inequalities in the distribution of green areas between different social groups. This poses an incentive for further investigations in the field of environmental justice and sustainable urban development. Issues like actual walking distance, barriers and safety, qualities of green spaces and user experiences should be investigated in future research. Noting that the data used in this study was from 2005, it is crucial to update and determine shifts in socio-spatial distribution of green areas in the city today. Whilst the population is still increasing, it is likely that even more green space has vanished in the 7 years since 2005. All these issues are essential for a good knowledge based planning of the green and just future of Malmö.

In this thesis, the public green space provision in Hamburg, Germany is critically examined and put into context by social indicators relating to social class and ethnic background.  Urban green spaces offer a variety of benefits for citizens, ranging from recreation, improving physical and mental health, contribution to urban cooling and climate adaptation as well as providing spaces for biodiversity. Yet, provision and access to public green space is not always equal. This is reflected in the concept of urban environmental justice, which acknowledges that not all societal groups equally benefit from environmental services nor are equally affected by the burdens of environmental pollution. Urban environmental justice is used in this thesis to holistically assess public green space provision, from a distributive, procedural and corrective justice dimension. These dimensions relate to how public green space is distributed in the city, how policies surrounding green space incorporate urban environmental justice concerns, and lastly what measures are in place for correcting potential injustices. The thesis employs a mixed method approach. Critical mapping through QGIS was applied to showcase the distribution and proximity to public green space in the various neighbourhoods in Hamburg. Following this, a policy analysis was performed to investigate the procedural justice dimension. Lastly, semi-structured interviews with five planners and two activists were conducted to illuminate measures for correcting urban environmental injustices related to green space provision. The findings suggest that public green space is not evenly distributed, and issues of access exist in Hamburg. Procedural justice is not fully achieved as a legal framework for urban environmental justice is lacking and the existing policies do not consider the concept adequately. Simultaneously, both supporting and hindering measures for correcting urban environmental injustices exist and corrective justice is not fully achieved either. Overall, the discourse surrounding urban environmental justice should be advanced in Germany and more awareness needs to be raised.

In recent years the composition of urban vegetation has become far more complex than that of the surrounding natural vegetation. This is mainly due to the influence that humans have on the creation of new plant communities and the management of urban green spaces. Green spaces are fundamental to the restoration and maintenance of biodiversity in areas that have been severely impacted by urban development. Green spaces provide various ecosystem services and benefits for the health and well-being of urban residents, and can help to reduce the effects of global climate change. The most understudied green space in the entire urban green infrastructure is homegardens. Homegardens contribute greatly to the species composition of urban and rural settlements and are important in situ conservation sites that help to protect rare and endemic species. They are essential agricultural systems, especially in rural settlements, that provide both sources of additional income generation and food supply. In developing countries such as South Africa, very few studies have been done on homegardens and the benefits they provide to homeowners and to urban ecosystems in general. However, since South Africa become committed to the United Nations Millennium Development Goals in 2000, more research has been done on the potential of homegardens for poverty alleviation. The aim of this study was to determine the patterns of plant diversity in a rural settlement and to determine to what extent the socioeconomic status of the inhabitants influences the plant species composition of the settlement. The settlement of Ganyesa, situated in the Bophirima district in the North-West Province, was chosen for the study. Using GIS techniques, a grid was placed over the settlement and plant surveys were done every 500 m. Different land-use types were identified during the completion of the survey, namely natural areas, fragmented natural areas, fallow fields, road verges, wetlands, home gardens and institutional gardens. The national South African census data from 2001 proved to be too unreliable to accurately determine the SES of the residents in Ganyesa. Consequently, a social survey was completed by means of a questionnaire to determine the socioeconomic status of the owners of the homegardens under study. Clear differences could be observed between the land-use types and the indigenous and alien species composition, which were indicated in kriging maps. In comparison with the natural areas, homegardens contained more alien species than the surrounding natural areas. The vegetation composition for all the homegardens were correlated with the residents socioeconomic status along a socioeconomic gradient, ranging from low, to medium to high. ANCOVA, multiple regressions and basic statistical analyses were performed using all the vegetation and socioeconomic data. Meaningful correlations occur between the socioeconomic status of the homeowners and the plant diversity of their gardens. / Thesis (M. Environmental Science)--North-West University, Potchefstroom Campus, 2010.

In recent years the composition of urban vegetation has become far more complex than that of the surrounding natural vegetation. This is mainly due to the influence that humans have on the creation of new plant communities and the management of urban green spaces. Green spaces are fundamental to the restoration and maintenance of biodiversity in areas that have been severely impacted by urban development. Green spaces provide various ecosystem services and benefits for the health and well-being of urban residents, and can help to reduce the effects of global climate change. The most understudied green space in the entire urban green infrastructure is homegardens. Homegardens contribute greatly to the species composition of urban and rural settlements and are important in situ conservation sites that help to protect rare and endemic species. They are essential agricultural systems, especially in rural settlements, that provide both sources of additional income generation and food supply. In developing countries such as South Africa, very few studies have been done on homegardens and the benefits they provide to homeowners and to urban ecosystems in general. However, since South Africa become committed to the United Nations Millennium Development Goals in 2000, more research has been done on the potential of homegardens for poverty alleviation. The aim of this study was to determine the patterns of plant diversity in a rural settlement and to determine to what extent the socioeconomic status of the inhabitants influences the plant species composition of the settlement. The settlement of Ganyesa, situated in the Bophirima district in the North-West Province, was chosen for the study. Using GIS techniques, a grid was placed over the settlement and plant surveys were done every 500 m. Different land-use types were identified during the completion of the survey, namely natural areas, fragmented natural areas, fallow fields, road verges, wetlands, home gardens and institutional gardens. The national South African census data from 2001 proved to be too unreliable to accurately determine the SES of the residents in Ganyesa. Consequently, a social survey was completed by means of a questionnaire to determine the socioeconomic status of the owners of the homegardens under study. Clear differences could be observed between the land-use types and the indigenous and alien species composition, which were indicated in kriging maps. In comparison with the natural areas, homegardens contained more alien species than the surrounding natural areas. The vegetation composition for all the homegardens were correlated with the residents socioeconomic status along a socioeconomic gradient, ranging from low, to medium to high. ANCOVA, multiple regressions and basic statistical analyses were performed using all the vegetation and socioeconomic data. Meaningful correlations occur between the socioeconomic status of the homeowners and the plant diversity of their gardens. / Thesis (M. Environmental Science)--North-West University, Potchefstroom Campus, 2010.

Flertalet studier har visat att grönområden främjar människors fysiska och psykiska hälsa. I takt med en ökad urbanisering och stadsutbyggnad ersätts naturliga miljöer med bebyggelse vilket påverkar befolkningen i urbana miljöer negativt, eftersom urbana grönområden genererar viktiga ekosystemtjänster. En urban livsstil kan dessutom medföra hälsorisker som psykisk ohälsa, hjärt-kärlsjukdomar och fysisk inaktivitet. Syftet med uppsatsen var att genom en kvalitativ ansats undersöka vilken betydelse urbana grönområden har haft för enskilda invånare i Helsingborg under covid-19-pandemin. Tio kvalitativa e-postintervjuer genomfördes och empirin analyserades med en induktiv ansats. Uppsatsens teoretiska ramverk bestod av Attention restoration theory samt Stress recovery theory och den insamlade empirin gav upphov till följande teman: lugn och ro, hämta energi, samt miljöombyte. Resultatet visar att urbana grönområden har betydelse för informanternas hälsa, eftersom urbana grönområden bidrar till återhämtning och stressminskning, vilket är betydande faktorer för en god fysisk och psykisk hälsa. Utifrån studiens resultat kan slutsatsen dras att genom att bevara urbana grönområden kanmänniskors livskvalitet öka eftersom urbana grönområden bidrar till bättre fysisk och psykisk hälsa i samhället. / Former studies have shown that urban green spaces improve physical and mental health.Urbanisation and urban development result in green environments being replaced by buildings. This has a negative effect on urban residents as urban green spaces provide important ecosystem services. An urban lifestyle can involve health risks such as mental illness, cardiovascular disease, and physical inactivity. This study aimed to investigate through a qualitative approach, the importance of urban green spaces for individual residents of Helsingborg during the covid-19 pandemic. Ten qualitative e-mail interviews were conducted, and the empirical findings were analyzed with an inductive approach. The collected empirics resulted in the following themes: peace and quiet, gain energy, and change of scenery. The results were analyzed through the theoretical framework Attention restoration theory and Stress recovery theory. The results showed that urban green spacesare essential for the informant’s health, as they contribute to recovery and stress reduction, which are significant factors for good physical and mental health. The main conclusion of this study shows that by preserving urban green spaces, people’s quality of life can increase as urban green spaces contribute to better physical and mental health in society.

Urban green spaces (UGS) can produce health-improving (salutogenic) and equigenic effects that narrow the health gap between disadvantaged and affluent neighbourhoods. Yet, the magnitude of such effects relies on the quality of a UGS. Various studies have found UGS quality to be worse in low-income neighbourhoods. Thus, the equigenic potential is often negated. This thesis examines if these findings can be replicated within the city of Stockholm. For this, two quality domains were identified. (1) The accessibility to a UGS determines the exposure to health benefits, as barriers to entry afford usage only to some individuals. (2) The salutogenic potentiality, determined by various qualities, influences the UGS’s ability to produce health-improving effects. For the assessment of these domains, the UGS Quality Audit Tool (UQAT) was developed, which uses GIS analysis and in-situ audits to assess 64 indicators. The UQAT produces an accessibility score, salutogenic potentiality score, total score, and individual inclusivity scores. In this thesis, the tool was used in a comparative case study of twelve UGS in six Stockholm neighbourhoods. The UGS were sorted into three groups depending on their neighbourhood’s socioeconomic status (SES) and health resilience. The aim was to determine whether the quality of the UGS differed significantly between groups. The results replicate findings from other countries, showing a significantly lower salutogenic potentiality for the UGS in low-SES neighbourhoods. Similarly, UGS gender-inclusivity scores were also significantly lower in low-SES neighbourhoods. While similar tendencies were identified concerning salutogenic potentiality and health resilience, these findings were not conclusive. Lastly, no significant relations to neighbourhood health or SES were found for accessibility or the other inclusivity categories. The findings suggest that investments into the quality of UGS in low-SES neighbourhoods are needed to create a more equitable and inclusive Stockholm.