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"Urbanization Switzerland Case studies."
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The Theory of Complexity and Sustainable Urban Development: A Systematic Literature Review
Urbanization is a rapidly accelerating global phenomenon that challenges sustainable development, requiring innovative frameworks for understanding and managing urban complexity. This study explores the application of Complexity Theory in sustainable urban development, framing cities as Complex Adaptive Systems (CAS), where dynamic social, economic, environmental, and technological interactions generate emergent behaviors. A systematic literature review was conducted, analyzing 91 studies retrieved from Scopus that explicitly link Complexity Theory to urban sustainability. Key findings reveal trade-offs, such as balancing economic growth with ecological preservation and social equity, while emphasizing the role of self-organization and adaptive governance in enhancing urban resilience. Concrete examples include the application of fractal analysis in urban planning to predict sprawl and optimize infrastructure and the use of system dynamics models to align smart city initiatives with United Nations Sustainable Development Goals. Wider co-benefits identified include improved public health through integrated green infrastructure and the reinforcement of social cohesion via participatory urban planning. This research concludes that embracing Complexity Theory enables a holistic approach to urban sustainability, fostering adaptable, resilient systems that can better manage uncertainty. This study highlights the need for interdisciplinary collaboration and innovative policy frameworks to navigate the multifaceted challenges of modern urbanization.
Journal Article
Childhood cancer and residential proximity to petrol stations: a nationwide registry-based case–control study in Switzerland and an updated meta-analysis
PurposeBenzene is a known carcinogen for adult leukemia. Exposure to benzene through parental occupation and the use of household products has been associated with childhood leukemia (CL). Ambient benzene has also been associated with CL and central nervous system (CNS) tumors. We aimed to investigate whether the higher ambient levels of benzene in proximity of petrol stations are associated with a greater risk of childhood cancers, leukemia, and CNS tumors.MethodsWe identified children diagnosed with cancer at age 0–15 years during 1985–2015 from the Swiss Childhood Cancer Registry and selected 10 age and sex-matched controls per case from national censuses. We calculated the distance from children’s home to the nearest petrol station using precise geocodes. We estimated odds ratios using conditional logistic regression adjusting for ambient levels of NO2, distance to highways, level of urbanization, and presence of a cantonal cancer registry. In addition, we ran a meta-analysis pooling current results for CL with those of previous studies.ResultsWe identified 6129 cases, of which 1880 were leukemias and 1290 CNS tumors. 24 cases lived within 50 m from a petrol station. The adjusted odds ratio of a cancer diagnosis for children thus exposed compared to unexposed children (> 500 m) was 1.29 (0.84–1.98) for all cancers combined, 1.08 (0.46–2.51) for leukemia, and 1.30 (0.51–3.35) for CNS tumors. During 2000–2015, when exposure assessment was more precise, the adjusted odds ratio for any cancer diagnosis was 1.77 (1.05–2.98). The summary relative risk estimate for CL in the meta-analysis including four studies was 2.01 (1.25–3.22).ConclusionsOur study provides weak support for an increased risk of childhood cancers among children living close to petrol stations. A meta-analysis including our study suggests an increased risk for CL.
Journal Article
Unintended policy integration through entrepreneurship at the implementation stage
Most scholars conceive policy integration (PI) as a top-down process steered by governmental bodies and consider the formulation stage to be the decisive step for achieving PI. Adopting a different stance, this article hypothesizes that PI can also occur throughout the implementation stage thanks to “integration entrepreneurs” who are able and willing to bring together policies that were designed in silos. I test this hypothesis by analyzing the evolution of federal legislation intended to curb urban sprawl in Switzerland over four decades (1980–2020) and investigate three major urban renewal projects that concretely reduced urban sprawl in the cities of Zurich, Bern and Geneva. In line with my hypothesis, these urban renewal projects succeeded thanks to an ex post integration of several policies that occurred during the implementation stage. This integrative process was an unintended outcome of the transformation of the Swiss Federal Railways (SBB) from a federal government institution into a state-owned company. Since then, the SBB has become an “integration entrepreneur” who brings together three federal policies that were previously poorly integrated: the spatial planning policy, the railway policy and the agglomeration policy. Case study evidence thus shows that PI can also happen unintentionally, namely through coordination mechanisms that were not foreseen by policymakers at the formulation stage. This finding challenges the top-down sequential approach of the policy process that is dominant among PI studies and calls for more research on the role and the strategies of “integration entrepreneurs” throughout the implementation stage.
Journal Article
Climate Change and Urban Resilience in Smart Cities: Adaptation and Mitigation Strategies in Brazil and Germany
Urban resilience is crucial in academic and policy discussions, particularly in balancing urban development and sustainability in both developed and developing countries. In developing nations, rising emissions and vulnerability challenge effective climate change mitigation and adaptation efforts. Advances in Information and Communication Technologies offer significant opportunities despite challenges. The digital revolution is central to enhancing urban management, especially in smart cities. In light of this context, this paper aims to investigate the literature advancements of urban resilience to climate change in smart cities and conduct a multi-case study analysis of adaptation and mitigation strategies in Brazilian and German smart cities, demonstrating their efforts to enhance urban resilience to climate challenges. The research used two main methods: a bibliometric analysis to review literature on climate change, urban resilience, and smart cities, and case studies of urban resilience practices in 10 smart cities from Brazil and Germany. The literature review highlights the increase in research on this theme, identifying five thematic clusters that reveal relationships among study topics and suggest future research directions. The cases highlighted local initiatives in Brazilian and German smart cities to enhance urban resilience to climate pressures, revealing notable differences due to varying levels of development and investment.
Journal Article
Water, Ecosystem Services, and Urban Green Spaces in the Anthropocene
As urban centers worldwide face the escalating impacts of climate change, rapid urbanization, and increasing water scarcity, the need for sustainable water management practices to enhance urban resilience in the Anthropocene has become critical. This study explores how ancient water management practices—including Roman aqueducts, Maya rainwater harvesting systems, and ancient Chinese flood control techniques—can be adapted to address contemporary water challenges in modern cities. We evaluate these historical practices through a lens of contemporary environmental pressures, including climate change, urbanization, and resource scarcity. By integrating ancient methods with modern technologies, we propose adaptive solutions to enhance urban water resilience. Case studies from five cities (Singapore, Copenhagen, Mexico City, Los Angeles, and Philadelphia) illustrate how modern green infrastructure, inspired by ancient techniques, is being successfully implemented to manage stormwater, mitigate urban flooding, and improve water conservation. By integrating historical practices with modern technologies—such as advanced filtration systems and water recycling—these cities are enhancing their water resilience and sustainability. The findings suggest that urban planners can draw valuable lessons from historical systems to design adaptive, climate-resilient cities that balance human needs with ecological sustainability. This paper concludes with actionable recommendations for future urban planning, emphasizing the importance of decentralized water systems, nature-based solutions, and community engagement to ensure sustainable urban water management in the Anthropocene.
Journal Article
Changes in Agricultural Soil Quality and Production Capacity Associated with Severe Flood Events in the Sava River Basin
Intensifying urbanization in Central Europe is increasingly pushing flood retention areas onto private farmland, yet the agronomic and socio-economic trade-offs remain poorly quantified. We conducted a narrative review of published field data and post-event assessments from 2014–2023 along the transboundary Sava River. Information was collected from research articles, case studies, and environmental monitoring reports, and synthesized in relation to national and EU regulatory thresholds to evaluate how floods altered soil functions and agricultural viability. Water erosion during floods stripped up to 30 cm of topsoil in torrential reaches, while stagnant inundation deposited 5–50 cm of sediments enriched with potentially toxic elements, occasionally causing food crops to exceed EU contaminant limits due to uptake from the soil. Flood sediments also introduced persistent organic pollutants: 13 modern pesticides were detected post-flood in soils, with several exceeding sediment quality guidelines. Waterlogging reduced maize, pumpkin, and forage yields by half where soil remained submerged for more than three days, with farm income falling by approximately 50% in the most affected areas. These impacts contrast with limited public awareness of long-term soil degradation, raising questions about the appropriateness of placing additional dry retention reservoirs—an example of nature-based solutions—on agricultural land. We argue that equitable flood-risk governance in the Sava River Basin requires: (i) a trans-boundary soil quality monitoring network linking agronomic, hydrological, and contaminant datasets; (ii) compensation schemes for agricultural landowners that account for both immediate crop losses and delayed remediation costs; and (iii) integration of strict farmland protection clauses into spatial planning, favoring compact, greener cities over lateral river expansion. Such measures would balance societal flood-safety gains with the long-term productivity and food security functions of agricultural land.
Journal Article
Is HIA the most effective tool to assess the impact on health of climate change mitigation policies at the local level? A case study in Geneva, Switzerland
This study aims to understand how the health dimension is integrated into four impact assessment tools used in Geneva, Switzerland: environmental impact assessment (EIA), strategic environmental assessment (SEA), sustainability assessment (SA) and health impact assessment (HIA). We have chosen as a case study greenhouse gas (GHG) emissions reduction policies chosen by the city of Geneva. The methodological approach consists in analysing EIA, SEA, SA and HIA conducted on three projects in three topic areas: urban planning, heating and transportation. These projects are: a complex urbanisation plan in an urban neighbourhood in Geneva (the Gare des Eaux-Vives project), a sustainable transportation plan for a central district in Geneva (the St-Gervais transportation project) and a strategy to encourage the City’s employees to use sustainable transport for local business travel. The results show some shortcomings in the consideration of health in SEA, EIA and SA. This work highlights a narrow vision of health in SEA and EIA, limiting itself to a review of the effects of projects on the determinants of the physical environment as required by the legislation relating to these tools. EIA does not require the integration of the health dimension. As for SA, our research found that health is treated much more superficially than in HIA and primarily through the analysis of ‘health and safety’ criteria. It appears from this work that HIA is the tool which provides the most elaborate assessment, compared to SA, SEA or EIA, of the consequences for health of the GHG reduction policies chosen by the local decision-makers of a city. However, our study suggests that the HIA community should identify the situations in which HIA should be carried out and in which cases it is better to include health issues within an integrated analysis.
Journal Article
Fascinating Remoteness: The Dilemma of Hiking Tourism Development in Peripheral Mountain Areas
Remote areas devoid of roads and tourist transport infrastructure are increasingly appreciated in urbanized countries because they provide the opportunity to experience tranquillity, solitude, and pristine nature, which are recreational qualities that contrast with the stress of urban life. In Switzerland as a whole, larger roadless areas are rare, but they are still common in southern Switzerland as the “inventory of remote areas,” which was established in this study, shows. A crucial dilemma for tourism development in remote areas is the paradoxical situation that the installation of tourism facilities and services can reduce the experiential qualities of these areas that attracted the tourists in the first place. This study seeks possible solutions for this dilemma by analyzing the attitudes of 230 visitors to 2 remote areas of southern Switzerland with a questionnaire-based survey. The case study areas represented one “moderately remote” area (Val Cama) and one “extremely remote” area (Val di Lodrino). The respondents were divided into 3 different visitor types along the “purism scale”: purists, neutralists, and nonpurists. The percentage of purists was 45% in the “extremely remote” Val di Lodrino versus 24% in the “moderately remote” Val Cama. There was a consensus among all visitor types that the existing traditional cultural landscape and the path network should be preserved and that the construction of new road or cable-car access should be avoided. The development of new huts, paths, and services was found to be controversial. A major policy recommendation of the study is to gear tourism supply in remote areas to the needs of different visitor types by carefully assessing the impact of measures on remoteness and concentrating new facilities and services in the more accessible parts of a remote area, while preserving more remote conditions in the other zones.
Journal Article
Integrated methods and scenario development for urban groundwater management and protection during tunnel road construction: a case study of urban hydrogeology in the city of Basel, Switzerland
In the northwestern area of Basel, Switzerland, a tunnel highway connects the French highway A35 (Mulhouse-Basel) with the Swiss A2 (Basel-Gotthard-Milano). The subsurface highway construction was associated with significant impacts on the urban groundwater system. Parts of this area were formerly contaminated by industrial wastes, and groundwater resources are extensively used by industry. During some construction phases, considerable groundwater drawdown was necessary, leading to major changes in the groundwater flow regime. Sufficient groundwater supply for industrial users and possible groundwater pollution due to interactions with contaminated areas had to be taken into account. A groundwater management system is presented, comprising extensive groundwater monitoring, high-resolution numerical groundwater modeling, and the development and evaluation of different scenarios. This integrated approach facilitated the evaluation of the sum of impacts, and their interaction in time and space with changing hydrological boundary conditions. For all project phases, changes of the groundwater system had to be evaluated in terms of the various goals and requirements. Although the results of this study are case-specific, the overall conceptual approach and methodologies applied may be directly transferred to other urban areas.
Journal Article