Cette thèse est sur l’historique et contemporain, social, politique et économique des forces, qui ont conduit à la (re) production et (re) construction d’injustice spatiale, de la consommation des espaces verts publics socialement valorisées urbaines à Nairobi. À l’aide d’un cadre de l’écologie politique urbaine (EPU), l’étude examine les forces structurant et les acteurs qui ont déterminé et continuent à la forme, les caractéristiques et les tendances, d’utilisation et accès, de la nature urbaine se réserve dans la ville. La question de recherche central de l’étude est, quels sont les processus sociaux, politiques et économiques passés et présents qui déterminent l’utilisation et l’accès des espaces verts urbains pour différents groupes sociaux à Nairobi? L’étude a été guidée par trois objectifs principaux : (1) d’enquêter sur le contexte historique, dynamique, sociale, politique et économique, impliqué dans les espaces verts urbains de création à Nairobi ; (2) afin d’étudier les politiques passées et présentes et des législations guidant l’utilisation, gestion et conservation de l’urbain protégé des zones, ainsi que les résultats des législations pour différents groupes sociaux et (3) d’examiner les résultats sociaux des interventions de l’acteur non étatique, dans la conservation et la gestion des aires protégées urbaines, sur l’utilisation et l’accès des espaces verts urbains publics, pour différents groupes sociaux. L’approche méthodologique utilisée était l’histoire de l’environnement et de la construction sociale de la nature. L’étude a recueilli des données qualitatives et analyse les informations à l’aide d’un style d’analyse critique du discours. Le premier argument que rend la thèse est que les inégalités sociales et spatiales dans l’utilisation et l’accès nos espaces verts urbains à Nairobi se fonde sur l’histoire urbaine de la ville coloniale, fondée par les impérialistes britanniques et mis au point à l’aide de la ségrégation raciale institutionnalisée, comme la principale stratégie de planification et de gestion urbaine. Basé sur un examen critique des résultats sociaux, des politiques et législations dans la période postcoloniale, je fais le deuxième argument que les gouvernements post indépendantes et moyens, a continué à reproduire injuste nos espaces verts urbains, en omettant de traiter l’oppression et l’autocratie, construit dans les forces structurantes et les institutions, hérités de l’administration coloniale. Par conséquent, pendant une longue période après l’indépendance, autre désenchantement des groupes sociaux vulnérables et marginalisés ont continué, limitant leur utilisation équitable et l’accès des ressources naturelles socialement valorisées. Le discours de l’époque est qu’ouverture aux acteurs non étatiques, augmentera les possibilités pour les groupes sociaux marginalisés et vulnérables, soient habilitées à prendre des décisions sur la gestion et l’utilisation durable des ressources. On croit que cela permettra aux collectivités de durablement pour utiliser et accéder aux ressources naturelles, réduire la pauvreté, améliorer les moyens de subsistance, prestation de services et améliorer la conservation et gestion. Ainsi, environ de la dernière décennie un, indépendant des gouvernements ont modifié leurs politiques, par l’ouverture à la participation du public dans la gestion et la conservation de la nature urbaine se réserve notamment dans la ville. Ces changements dans la politique font partie des déplacements plus loin le gouvernement de l’État centré, vers une autonomisation locale, conformément à la Constitution du Kenya a récemment promulgué (CoK) 2010. L’idée maîtresse de la thèse vient ici, où j’ai une question l’affirmation que la participation citoyenne permettra d’améliorer la justice sociale et spatiale. / This thesis is about the historical and contemporary social, political and economic forces, that have led to the (re)production and (re)construction of spatial injustice, in the consumption of socially valued public urban green spaces in Nairobi. Using an Urban Political Ecology (UPE) framework, the study investigates the structuring forces and actors that have determined and continue to shape, patterns and trends, of use and access, of urban nature reserves in the city. The central research question of the study is, what are the past and present social, political and economic processes that determine use and access of urban greenspaces for different social user groups in Nairobi? The study was guided by three main objectives: (1) To investigate the historical context, that is, social, political and economic dynamics, involved in the creation urban greenspaces in Nairobi; (2) To investigate the past and present, policies and legislations guiding the use, management and conservation of the urban protected areas, as well as the outcomes of the legislations for different social user groups and (3) To examine the social outcomes of non-state actor’s interventions, in the conservation and management of urban protected areas, on use and access of public urban green spaces, for different social user groups. The methodological approach used was environmental history and the social construction of nature. The study collected qualitative data and analysed the information using a critical discourse analysis style. The first argument the thesis makes is that social and spatial inequalities in use and access urban greenspaces in Nairobi is grounded on the city’s colonial urban history, as founded by the British imperialists and developed using institutionalised racial segregation, as the main strategy for urban planning and management. Based on a critical review of the social outcomes, of policies and legislations in the post-colonial period, I make the second argument that the early and middle post-independent governments, continued to reproduce unjust urban greenspaces, by failing to address the oppression and autocracy, built in the structuring forces and institutions, inherited from the colonial government. Therefore, for a long time after independence, further disenfranchisement of vulnerable and marginalised social groups continued, limiting their equitable use and access of socially valued natural resources. The contemporary discourse is that opening up to non-state actors, will increase opportunities for the marginalised and vulnerable social groups, to be empowered in making decisions on sustainable resource use and management. It is believed that this will enable communities to sustainably use and access natural resources, reduce poverty, improve livelihoods, service delivery and enhance conservation and management. Thus, approximately for the past one decade, the post-independent governments have changed their policies, by opening up to public participation in management and conservation of urban nature reserves including in the city. These changes in policy are part of the wider shifts away from the state centred government, towards local empowerment, in line with the recently promulgated Constitution of Kenya (CoK) 2010. The main thrust of the thesis comes here, where I question the assertion that citizen participation will enhance social and spatial justice. Therefore, a larger part of the thesis investigates the social outcomes of interventions by non-state actors in management and conservation of the urban nature reserves, on different social user groups.

Age-friendly parks support older adults' health as places for urban outdoor recreation when more remote nature becomes inaccessible. I analyzed data from a previous survey (n = 266) to explore factors important for older adults' nature experience knowledge to find essential features of age-friendly park design. The data from the survey showed that many older adults had a functional impairment. Still, they used nature areas within walking distance for peace and tranquility and valued age-friendly design features. I also performed semi-structured interviews with planners (n = 6) at Östersund Municipality, Sweden, to understand how their work was affected as the proportion of older adults increased. The planners emphasized supporting older adults' independence through cross sectoral projects and more collaboration between public, private, and non-profit actors. Findings were discussed and implemented into Badhusparken and Surfbukten, urban green spaces in Östersund, to understand planning in practice and park features needed to support age-friendly outdoor recreation. My conclusion was that features regarding age-friendly parks are complex and equal participation is an issue that requires more interdisciplinary research, especially regarding possibilities with age-friendly projects and networks as ways to overcome challenges with an aging population. / <p>2023-06-09</p>

Ekosystemtjänster har varit ett sätt att försöka värdera naturens tjänster till oss människor men har samtidigt bidragit till en separation mellan natur och människa. Det är ett kvantitativt ramverk som har svårigheter att ta hänsyn till de sociokulturella värdena. Studier menar nu på att det krävs mer forskning kring andra sätt att se på människors relation till naturen bortsett från den binära dikotomin människa-natur. Denna studie undersöker därför hur äldre konceptualiserar naturen och vad för upplevelsevärden de söker i ett naturområde samt vilka hinder och motivationer de upplever inför att ta sig ut till naturen. På så sätt lyfts olika faktorer som påverkar äldres tillgänglighet till grönområden, till exempel deras relation till naturen. Studien är utförd i den naturtäta kommunen Tyresö för att också utforska närheten till naturens betydelse i frågor om tillgänglighet. Intervjuer gjordes med 10 pensionerade personer och resultatet presenteras sedan efter konceptualisering av natur, värdering av natur och den upplevda tillgängligheten till naturen. Upplevelsevärden används för att tematisera vilka kvalitéer som de söker hos ett naturområde och platskänsla och platsidentitet analyserar känslorna kopplade till naturen som rör sig över tid och rum. Resultatet presenterar många olika faktorer som påverkar tillgängligheten där deltagarnas relation till naturen står i centrum.

Submitted by Karina Andrade Mattos null (karina_amattos@hotmail.com) on 2017-03-27T16:09:49Z No. of bitstreams: 1 DISSERTAÇÃO DE MESTRADO_KARINA ANDRADE MATTOS _REPOSITÓRIO.pdf: 38116716 bytes, checksum: 108b51c05dd508c255283b851a6cfdee (MD5) / Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-03-29T19:03:34Z (GMT) No. of bitstreams: 1 mattos_ka_me_bauru.pdf: 38116716 bytes, checksum: 108b51c05dd508c255283b851a6cfdee (MD5) / Made available in DSpace on 2017-03-29T19:03:34Z (GMT). No. of bitstreams: 1 mattos_ka_me_bauru.pdf: 38116716 bytes, checksum: 108b51c05dd508c255283b851a6cfdee (MD5) Previous issue date: 2017-02-23 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A presente pesquisa propõe a análise multimétodos dos espaços verdes urbanos das cidades de Botucatu e Bauru, a fim de valorizá-los. A criação e manutenção de espaços verdes urbanos proporcionam inúmeros benefícios, contudo, tais espaços só se tornam relevantes à vida urbana quando objeto de políticas, programas e projetos públicos bem sucedidos. Nota-se que a partir do final do século XX e início do século XXI, uma consciência em relação à importância desses espaços começou a emergir, tanto por parte da administração pública como da população. No entanto, diante da conjuntura contemporânea baseada na multifuncionalidade dos espaços verdes, na maioria das vezes as ações dos planejadores e administradores não coincidem com as necessidades dos cidadãos. Assim, entender como as diferentes instâncias da sociedade avaliam os benefícios associados a esses espaços, considerando os fatores sociais, culturais, territoriais e políticos do meio, torna-se fundamental para o desenvolvimento e aplicação de estratégias e políticas públicas urbanas participativas e eficientes. Dessa forma, nosso objetivo é verificar se os benefícios dos espaços verdes são igualmente classificados pela população em diferentes áreas urbanas, apresentando divergências ou influências das particularidades locais, e se os benefícios atribuídos pelos cidadãos têm o mesmo valor que os destacados pelas políticas públicas municipais. Para isso, a metodologia adotada inclui diferentes materiais e métodos: pesquisa bibliográfica e documental, estudos de campo, cartografia, entrevistas e o método Best-Worst Scaling (BWS). Os resultados direcionam para três principais constatações: primeiro, que há uma hierarquização dos benefícios dos espaços verdes e que, apesar das diferenças, existe uma semelhança entre a classificação das duas cidades; segundo, que, em Botucatu, a percepção dos cidadãos vai de encontro com as medidas adotadas pela gestão pública municipal; e terceiro, que pesquisas desta natureza são fundamentais para a valorização dos espaços verdes urbanos. / The present research proposes the multi-method analysis of the urban green spaces in Botucatu and Bauru cities, in order to valorize them. The creation and maintenance of urban green spaces provide innumerous benefits, however, such spaces only become relevant to urban life when object of successful politics, programs and public projects. It is noticed that from the end of the twentieth century and early of twenty-first century, a conscience in relation to importance of these spaces began emerging, as much in the public management as in the population. Therefore, in face of the contemporary conjuncture based on the multifunctionality of the green spaces, mostly the action of the planners and managers do not coincide with the necessities of the citizens. Thus, to understand how the different instances of society evaluate the benefits associated to these spaces, considering the social, cultural, territorial and political facts of the place, it is fundamental to the development and application of the participative and efficient strategies and urban public policies. This way, our objective is to verify if the benefits of the urban green spaces are equally classified by the population in different urban areas, presenting divergences or influences of the local particularities, and if the benefits attributed by citizens have the same value that the detailed by the municipal public policies. For this, the methodology adopted includes different materials and methods: bibliographic and documentary research, field studies, cartography, interviews and the method Best-Worst Scaling (BWS). The results point to three main findings: first, that there is a ranking of the benefits in the green spaces and that, in spite of the difference, there is a similarity between the classifications of the two cities; second, that, in Botucatu the citizens’ perception meet the measure adopted by the municipal public management; and third, that researches of this nature are fundamental to the valuation of the urban green spaces.

Despite the directions of regulatory agencies, that prompt a sufficient provision of green spaces in the urban context, research claims that the access to parks depends on the Socio-Economic-Status (SES) of the inhabitants of the city. Therefore, the uneven access to the green areas, known as Environmental Inequality, has been recognised as an Environmental Injustice. In this study, a qualitative approach was employed to assess the presence of the Environmental Inequality between two neighbourhoods with different SES in the city of Rome; consequently, the interest was to investigate how does the inequality occur given a satisfying quantity of green space. Ten citizens were selected to participate in semi-structured interviews with the aim to understand their attitudes and perspectives towards the local green parks and to verify if the inhabitants perceived any inequality. The results indicate the presence of the Environmental Inequality based on the SES of the inhabitants of the two neighbourhoods, in consequence of qualitative factors such as maintenance and lack of facilities. A perceived Inequality was also found within the participants of both the neighbourhoods supporting the results about the presence of the inequality. The present study contributes to the discussion about the qualitative obstacles that may influence access to the urban parks and that may determine an environmental injustice. Further research should extend the samplings to more than two neighbourhoods in order to confirm that these results apply to the rest of the wide territory of Rome, as these results cannot be generalized with a sample size of ten.

In vielen Städten erfordern fortschreitende Urbanisierung und Klimaerwärmung ein besseres Verständnis des urbanen Wasserkreislaufes zur Entwicklung nachhaltiger Wassernutzungskonzepte. Jedoch erschwert die Komplexität urbaner Wasserflüsse die Nutzung hydrologischer Tracer. In dieser Arbeit werden stabile Isotope des Wassers, hydrochemische und -klimatische Daten genutzt, um die Wasserverteilung und -speicherung in Berlin in den Trockenjahren 2018–2020 zu untersuchen. Auf kleinräumiger Skala wurden Unterschiede bei Evapotranspiration, unterirdischen Fließwegen und Wasserspeicherung unter urbanen Grasflächen, Sträuchern und Bäumen deutlich. Im peri-urbanen Fluss Erpe erschwerte die geringe Variabilität von Abfluss- und Isotopendynamiken die Bestimmung von Verweilzeiten und Mischprozessen. Während warmer, trockener Sommer führte ein hoher Klarwasseranteil zu einer Verschlechterung der Wasserqualität. Auf der stadtweiten Skala wurde der Einfluss von Grundwasser, Niederschlag und Abwasser auf verschiedene Flüsse untersucht. Große Variabilität der Isotopendynamiken wurde in Einzugsgebieten mit Flächenversiegelung und Regenwassereinleitung beobachtet. Die Anreicherung schwerer Isotope in Spree und Havel im Sommer und Herbst verdeutlichte den Einfluss von großskaligen Klimadynamiken und Verdunstung im stromaufwärts gelegenen Einzugsgebiet. Ein nachhaltiges Management urbaner Grünflächen sowie die Speicherung von Regenwasser können dazu beitragen, den Einfluss von Klimaänderungen auf Berlins Wasserressourcen auf lokaler Ebene abzumindern. Jedoch werden großskalige Nutzungskonzepte in den Einzugsgebieten der Spree und Havel benötigt, um Wasserverluste zu minimieren und Abflussraten aufrecht zu erhalten. Weiterführende isotopenbasierte Studien haben großes Potential, das Verständnis von Wasseralter, Abflussentstehung, Verdunstung und langfristigen Dürrefolgen, sowie der Übertragbarkeit der Erkenntnisse auf andere Metropolenregionen, weiter zu verbessern. / In urban areas, progressing urbanisation and climate warming call for a comprehensive understanding of urban water cycling to establish sustainable water management strategies. However, the complexity of urban water fluxes complicates the application of hydrological tracers. This thesis used stable isotopes of water, combined with hydrochemical and climatic data, to characterise water partitioning and storage in Berlin, Germany, during the exceptionally warm and dry 2018–2020 period. At the plot-scale, differences in evapotranspiration, subsurface flow paths and storage under urban grassland, shrub and trees were evident. In the peri-urban river Erpe, low variability in discharge and isotopic dynamics limited the applicability of transit time and end member mixing approaches. During warm and dry summers, high contributions of treated wastewater effluents caused a deterioration of water quality. At the city-scale, contributions of groundwater, storm runoff and effluents to different local streams were studied. Isotope dynamics were most variable in catchments with high levels of imperviousness and connectivity to storm drains. In the Spree and Havel rivers, the isotopic enrichment in summer and autumn reflected the impact of large-scale climate dynamics and evaporative losses in the upstream catchment. To mitigate climate change impacts on Berlin’s water resources in the future, the sustainable management of urban green spaces and better capturing of urban rainfall may limit water consumption at the local scale. However, maintaining discharge in the Spree and Havel rivers during warm and dry periods will require catchment-scale management practices that limit water consumption and losses in upstream areas. Future isotope-based research in urban areas has great potential to improve the understanding of urban water ages, source contributions to urban streamflow, evaporation and long-term drought recovery, as well as upscaling the results to other metropolitan areas.

Background: Urban green spaces (UGS) have been shown to benefit both social cohesion and health outcomes. A new framework by Jennings and Bamkole (2019) suggests that social cohesion might act as a social determinant of health mediating the health benefits provided by UGS. Aim: To investigate associations between UGS, social cohesion, and self-rated health (SRH) in Swedish adults. Methods: A cross-sectional survey for adults living in Västerås (n=106) was conducted. Questions about UGS covered type, visit frequency, proximity, time spent, and UGS quality. Social cohesion was measured using a 13-item scale developed by de Vries et al. (2013). SRH was assessed with one Likert-scale item. Results: A t-test showed that forests were associated with higher social cohesion (M=46.44, SD=8.25) compared to parks (M=42.34, SD=6.56; p=.006), while logistic regressions revealed higher social cohesion was associated with better SRH when adjusted for age (OR = 1.10, 95% CI = 1.03 - 1.18, p = .008). No relationships between UGS and SRH were identified, and social cohesion did not affect that relationship further. Discussion: The small sample size, convenience sampling, and limited assessment of possible confounders have to be considered. Conclusion: The results from this study partially support Jennings and Bamkole’s (2019) framework, indicating its merits and confirming the need to investigate social cohesion as a central factor in the relationship between UGS and health outcomes further.

As cities globally experience rapid urbanization, the pressure on urban green areas increases and simultaneously opportunities for human-nature interactions decrease, which are crucial for urban citizens’ wellbeing. Urban foraging- the gathering of plant or fungal materials in urban areas- is a common human-nature interaction that has been inadequately studied and overlooked in urban policy, planning, and design. The objective of this thesis is to gain insights into the practices, motivations, and barriers of foragers in Järva City District and Stockholm County. Through an exploratory mixed methodology approach, this study demonstrated that urban foraging is perceived as a recreational activity that motivates people to get out in nature and connects them to biodiversity in forests and parks within the city. Foraging links people to high quality and local food and encourages the sharing of local ecological knowledge. Foragers investigated display care for nature, indicating that foraging can nurture a bond between nature and urban citizens. The expressed barriers to foraging were time, proximity, lack of knowledge, and fear of pollution. The findings show that foraging provides various benefits for citizens in Stockholm County and Järva City District, implying that urban foraging should not be overlooked in future research and assessments, and should be considered and incorporated into urban policy, planning, and design. / Green Access

No description available.

Le défi de ce travail réside dans l’application conjointe de deux approches d’évaluation de la double-valeur des espaces végétalisés urbains (EVU) en s’inscrivant dans une dimension dualiste «éco-anthropocentrique». Cette posture a permis d’appréhender le fonctionnement de ces espaces et d’en quantifier les services et des services écosystémiques rendus à la société humaine. Ces deux approches se sont basées sur une démarche ascendante fondée sur la caractérisation de deux types de végétation : les pelouses et les arbres urbains. Le manque de connaissance sur le fonctionnement des pelouses urbaines a imposé la mise en place d’un protocole de suivi permettant d’établir un état des lieux initial sur les communautés prairiales qui s’y installent et sur leur dynamique. Bien qu’il n’ait révélé qu’une partie du fonctionnement de la flore prairiale, le protocole de suivi a eu le mérite d’en déterminer sa composition et sa structuration en précisant l’impact de plusieurs facteurs environnementaux et anthropiques. Quant à la végétation arborée, elle a été étudiée en quantifiant les services et des services écosystémiques en appliquant le modèle i-Tree Eco. Fondé sur des indicateurs biophysiques le modèle a fourni des informations sur le taux de stockage et de séquestration du carbone, le taux d’élimination des polluants atmosphériques et le taux d’émissions biogéniques par les arbres urbains. Bien que le recours au modèle soit empreint d’incertitude, il a permis de démontrer le rôle des arbres dans l’amélioration de la qualité de l’air. Mais, pour parvenir à rendre efficacement ce service, la plantation et la gestion des arbres peuvent être intégrées dans une réflexion de planification plus globale. L’objectif opérationnel d’une telle thèse ne se conçoit que par l’apport de connaissances concrètes à disposition des acteurs de terrain. Nous avons donc tenté de fournir quelques indications à ce propos, alliant ainsi recherche et dissémination des connaissances acquises. / This research work provides two assessment tools based on both ecocentric and anthropogenic approaches. We argued that these approaches are complementary and they lead not only to understand ecological functions of urban green spaces but also to quantify ecosystem services provided to society. Based on bottom up approach, two urban habitats were assessed : lawns and urban forest. Due to the lack of knowledge about ecological functions of urban lawns, it was required to implement a monitoring protocol that helps to provide a baseline and measure the changes of flora composition and structure across urban green spaces. Although monitoring protocol had some limitations, it intended to highlight the response of lawn flora to environmental patterns and to particular human activities such as management techniques and trampling. Urban forest was assessed by quantifying it structure and some ecosystem services and desservices using i-Tree model Eco. Based on biophysical indicators, the model quantify the total carbon stored and the annually carbon sequestered, the annually amount of pollution removal, and the annually amount of biogenic emissions by trees. Although some uncertainty remains about the application of this model, it was shown that urban trees improve local air quality. However, to alleviate air pollution within urban area, planting and managing trees should be associated with an integrative planning strategy that takes into account other factors. Our study also incorporates operational items, so we have tried to provide some guidance to planners and green spaces managers with reference to our assessment results.