Disappearing cities on US coasts.

The sea level along the US coastlines is projected to rise by 0.25-0.3 m by 2050, increasing the probability of more destructive flooding and inundation in major cities1-3. However, these impacts may be exacerbated by coastal subsidence-the sinking of coastal land areas4-a factor that is often underrepresented in coastal-management policies and long-term urban planning2,5. In this study, we combine high-resolution vertical land motion (that is, raising or lowering of land) and elevation datasets with projections of sea-level rise to quantify the potential inundated areas in 32 major US coastal cities. Here we show that, even when considering the current coastal-defence structures, further land area of between 1,006 and 1,389 km2 is threatened by relative sea-level rise by 2050, posing a threat to a population of 55,000-273,000 people and 31,000-171,000 properties. Our analysis shows that not accounting for spatially variable land subsidence within the cities may lead to inaccurate projections of expected exposure. These potential consequences show the scale of the adaptation challenge, which is not appreciated in most US coastal cities.

Envelhecimento, sentido de lugar e planejamento urbano: facilitadores e barreiras / Envejecimiento, sentido de lugar y planificación urbana: facilitadores y barreras / Aging, sense of place and urban planning: facilitators and barriers

RESUMO O planejamento urbano é um processo que compreende sucessivas melhorias voltadas para a qualidade de vida das populações e o envelhecimento populacional pressiona para que instâncias sociais assumam novas posturas sobre os modos de se planejar a cidade. Para compreender a ligação do idoso com o ambiente, é necessário entender os recursos disponíveis no local e as experiências vividas naquele contexto. A partir do sentido de lugar, as pessoas transformam os espaços e são por eles transformados. Assim, esse estudo questionou como moradores idosos de três localidades da cidade de Brasília constroem seu sentido de lugar, a partir da identificação de facilitadores e barreiras enfrentadas diariamente e das demandas para a construção de um ambiente amigável ao envelhecimento. Os dados qualitativos apresentados decorrem do uso de três técnicas de pesquisa: entrevistas face a face, entrevistas caminhadas e diários fotográficos. Fizeram parte do estudo 63 participantes com idade entre 60 e 90 anos. A análise realizada por meio do software Iramuteq permitiu a elaboração de quatro classes relacionadas aos vínculos sociais e comunitários, às atividades das rotinas diárias, aos aspectos simbólicos que refletem o sentido de lugar e a relação com elementos rurais e urbanos percebidos em cada cenário. Estar atento às mudanças resultantes dessa inversão da pirâmide demográfica incide sobre algumas das questões identificadas nesse estudo, mas também confirma o quanto ainda se faz necessário avançar para incluir de modo mais realista a dinâmica relação idoso-ambiente em estudos que abordam o processo de envelhecimento.

RESUMEN El urbanismo es un proceso que comprende sucesivas mejoras encaminadas a la calidad de vida de las poblaciones y el envejecimiento de la población presiona a las instancias sociales para que asuman nuevas posturas sobre las formas de planificar este entorno. Para comprender la percepción del ambiente por parte de los adultos mayores, es necesario comprender los recursos disponibles en el lugar y también las experiencias vividas en ese contexto. Desde el sentido del lugar, las personas transforman espacios y son transformados por ellos. Por lo tanto, este estudio cuestionó cómo los residentes mayores de tres localidades de la ciudad de Brasilia construyen su sentido de lugar, en función de sus identificaciones de los facilitadores y las barreras que se enfrentan a diario y las demandas para construir un ambiente amigable con el envejecimiento. Los datos cualitativos presentados derivan del uso de tres técnicas de investigación: entrevistas personales, entrevistas complementarias y diarios fotográficos. 63 personas mayores entre 60 y 90 años participaron en el estudio. El análisis realizado con el software Iramuteq permitió el desarrollo de cuatro clases relacionadas con los vínculos sociales y comunitarios, actividades de la rutina diaria, aspectos simbólicos que reflejan el sentido del lugar y la relación con los elementos rurales y urbanos percibidos en cada escenario. Conocer los cambios resultantes de esta inversión de la pirámide demográfica se centra en algunos de los problemas identificados en este estudio, pero también confirma cuánto progreso aún se necesita para incluir de manera más dinámica la relación entre el anciano y el ambiente en los estudios que abordan el envejecimiento.

ABSTRACT. The urban planning is a process that comprises successive improvements aimed at the quality of life of populations and the aging of the population puts pressure on social instances to assume new postures about the ways of planning this environment. To understand the elderly's attachment with the environment, it is necessary to understand the resources available in the place and the experiences lived in that context. From the sense of place, people transform spaces and are transformed by them. Thus, this study questioned how elderly residents of three locations in the city of Brasília build their sense of place, based on their identification of facilitators and barriers faced daily and the demands for building an aging-friendly environment. The qualitative data presented derives from the use of three research techniques: face-to-face interviews, go-along interviews, and photographic diaries. Sixty-three elderly persons between 60 and 90 years participated in the study. The analysis carried out using the Iramuteq software allowed the development of four classes related to social and community bonds, activities of daily routines, symbolic aspects that reflect the sense of place and the relationship with rural and urban elements perceived in each scenario. Being aware of the changes resulting from the demographic pyramid's inversion incur on some of the issues identified in this study. However, the results confirm how much further progress is still needed to include more dynamically the elderly-environment relationship in studies that address the aging process.

Ecological Landscape Design and Evaluation in Public Charging Facilities for Electric Vehicles.

The deterioration of the environment in the 21st century has made environmental issues one of the most severe tests for modern society. With this comes a change in energy structure from high-carbon to low-carbon direction, and electric vehicles are gradually developing into the darling of a city with low-carbon transportation and safe travel. This paper carries out a systematic analysis of landscape design and environmental protection in the development of new energy electric vehicle charging facilities in urban habitat. By categorizing the content and provisions of published domestic and international standards, new requirements for standardization are obtained, including barrier-free design, electromagnetic radiation, child safety protection, and urban landscape integration. Among them, ecological landscape public charging facilities can enhance the overall quality of urban environment. This paper analyzes the necessity of landscape design in charging facilities, explores the ecological concepts extended by macroscopic landscape design principles and the problems of public charging facilities, and proposes a design and evaluation method of ecologically landscaped public charging facilities based on hierarchical analysis and neural networks. The hierarchical analysis method is introduced to establish a landscape design assessment index system, and then a neural network is introduced to describe the characteristics of electric vehicle charging, and the landscape design assessment learning samples are trained to establish a landscape design assessment model. Finally, a comparison experiment is conducted with other landscape design assessment methods using specific examples, and the results show that the proposed method has more obvious advantages in ecological landscape public charging facility design assessment with high accuracy, faster landscape design assessment, charging efficiency, and environmental protection.

The Role of Different Types of Actors In The Future of Sustainable Agriculture In a Dutch Peri-urban Area.

Peri-urban areas support a broad range of multifunctional demands for public goods. In northwest Europe, peri-urban areas tend to overlap with intensive agricultural land, resulting in conflicts between agricultural use and the public good demands of residents. Sustainable intensification (SI) of agriculture might help reconcile agricultural and well-being goals, but it is unclear how the mix of actors in a peri-urban setting can trigger or restrain SI. In a Dutch case study, we explored how SI of agriculture can contribute to making peri-urban areas more sustainable, and which actors are key enabling factors for implementing SI. We used interviews, surveys, workshops, and empirical analysis to obtain insight into the stakeholder's vision of a sustainable future for the case study area, the farming system and actor network. We integrated these insights in a Bayesian Belief Network, where we linked the actor network to implementation of three SI measures (farm-level efficiency measures, small landscape elements, and direct sales), and used sensitivity analysis to model effects of support for implementation by different groups of actors. The case study has a dense stakeholder network, where, dependent on the SI measure, farmers are triggered by all actors to implement SI, or have a stronger role in uptake themselves. The sensitivity analysis suggested that the future preferred by the stakeholders requires broad support of all actors involved, with local actors without a formal role being essential for uptake. Overall, trade-offs among public goods are almost inevitable when taking up SI measures.

Urban development trend analysis and spatial simulation based on time series remote sensing data: A case study of Jinan, China.

Uncontrolled urban growth detracts from healthy urban development. Understanding urban development trends and predicting future urban spatial states is of great practical significance. In order to comprehensively analyze urbanization and its effect on vegetation cover, we extracted urban development trends from time series DMSP/OLS NTL and NDVI data from 2000 to 2015, using a linear model fitting method. Six urban development trend types were identified by clustering the linear model parameters. The identified trend types were found to accurately reflect the on-ground conditions and changes in the Jinan area. For example, a high-density, stable urban type was found in the city center while a stable dense vegetation type was found in the mountains to the south. The SLEUTH model was used for urban growth simulation under three scenarios built on the urban development analysis results. The simulation results project a gentle urban growth trend from 2015 to 2030, demonstrating the prospects for urban growth from the perspective of environmental protection and conservative urban development.

Wind disasters adaptation in cities in a changing climate: A systematic review.

Wind-related disasters will bring more devastating consequences to cities in the future with a changing climate, but relevant studies have so far provided insufficient information to guide adaptation actions. This study aims to provide an in-depth elaboration of the contents discussed in open access literature regarding wind disaster adaptation in cities. We used the Latent Dirichlet Allocation (LDA) to refine topics and main contents based on 232 publications (1900 to 2019) extracted from Web of Science and Scopus. We conducted a full-text analysis to filter out focal cities along with their adaptation measures. The results show that wind disaster adaptation research in cities has formed a systematic framework in four aspects: 1) vulnerability and resilience of cities, 2) damage evaluation, 3) response and recovery, and 4) health impacts of wind disaster. Climate change is the background for many articles discussing vulnerability and adaptation in coastal areas. It is also embedded in damage evaluation since it has the potential to exacerbate disaster consequences. The literature is strongly inclined towards more developed cities such as New York City and New Orleans, among which New York City associated with Hurricane Sandy ranks first (38/232). Studies on New York City cover all the aspects, including the health impacts of wind disasters which are significantly less studied now. Distinct differences do exist in the number of measures regarding the adaptation categories and their subcategories. We also find that hard adaptation measures (i.e., structural and physical measures) are far more popular than soft adaptation measures (i.e., social and institutional measures). Our findings suggest that policymakers should pay more attention to cities that have experienced major wind disasters other than New York. They should embrace the up-to-date climate change study to defend short-term disasters and take precautions against long-term changes. They should also develop hard-soft hybrid adaptation measures, with special attention on the soft side, and enhance the health impact study of wind-related disasters.

Learning from urban form to predict building heights.

Understanding cities as complex systems, sustainable urban planning depends on reliable high-resolution data, for example of the building stock to upscale region-wide retrofit policies. For some cities and regions, these data exist in detailed 3D models based on real-world measurements. However, they are still expensive to build and maintain, a significant challenge, especially for small and medium-sized cities that are home to the majority of the European population. New methods are needed to estimate relevant building stock characteristics reliably and cost-effectively. Here, we present a machine learning based method for predicting building heights, which is based only on open-access geospatial data on urban form, such as building footprints and street networks. The method allows to predict building heights for regions where no dedicated 3D models exist currently. We train our model using building data from four European countries (France, Italy, the Netherlands, and Germany) and find that the morphology of the urban fabric surrounding a given building is highly predictive of the height of the building. A test on the German state of Brandenburg shows that our model predicts building heights with an average error well below the typical floor height (about 2.5 m), without having access to training data from Germany. Furthermore, we show that even a small amount of local height data obtained by citizens substantially improves the prediction accuracy. Our results illustrate the possibility of predicting missing data on urban infrastructure; they also underline the value of open government data and volunteered geographic information for scientific applications, such as contextual but scalable strategies to mitigate climate change.

City to city learning and knowledge exchange for climate resilience in southern Africa.

Southern African cities face several challenges including management of rapid urbanization, rising populations, expanding informal settlements; adequate water and other service provision, and a host of governance challenges. Climate change and variability add a compounding effect to this complex, multi stressor context. Addressing the complexity requires an understanding of urban ecosystems functioning and interactions amongst the built and natural environment (climate) and human systems. In this paper we argue that learning is essential for cities to be resilient to current and future challenges. We profile the Future Resilience for African CiTies And Lands (FRACTAL) project which contributed towards climate resilient development by providing relevant climate information for decision-making at the city regional scale in southern Africa. Following FRACTAL's city-to-city learning approach of sharing good practices, knowledge and experiences framed around transdisciplinary research, the study cities of Harare, Lusaka, Windhoek and Durban conducted city learning exchange visits between 2017 and 2018. We used a mixed methods approach to collect and analyze historical climate and hydrological data and current socio-economic and development data among the cities. A qualitative, in-depth, case study comparative analysis was used to identify similarities and differences as well as lessons drawn from the learning process during the city exchanges and these were complimented by desktop studies. Results showed water scarcity, large informal settlements, reliance on external water and energy sources, inadequate protection of ecologically sensitive resources and service provision as some of the common complications in the cities. Several lessons and transferable practices learnt from the cities included effective water conservation and waste management and the use of public-private partnerships in Windhoek, community engagements in Durban and Lusaka while lessons on decisive leadership in dealing with informal settlements emanated from Harare's limited informal settlements. Lastly, Durban's Adaptation Charter and integrated climate planning provided lessons for biodiversity protection and mainstreaming climate change at city governance level. While we recognize that cities are context-specific we consider these good practices as being broadly transferable to other southern African cities. We conclude that social, experiential and structured learning can be an innovative way of multi-stakeholder engagement and a useful approach to increase city resilience planning across southern Africa and cities that face similar developmental challenges.

Liveability aspirations and realities: Implementation of urban policies designed to create healthy cities in Australia.

Creating healthy, liveable cities is a common policy aspiration globally. However, little research has explored the capacity of urban policies to deliver this aspiration, or levels of policy implementation. This study aimed to develop policy-relevant indicators, to detect within- and between-city inequities in the implementation of Australian state government policy targets related to urban liveability. Seventy-three government policies were reviewed across Australia's four largest cities to identify measurable spatial policies that contribute to creating healthy, liveable neighbourhoods. Spatial indicators based on these policies were developed to assess and map levels of policy implementation at the metropolitan and sub-metropolitan level. Measurable spatial policies were identified for only three out of seven policy domains: walkability, transit access, and public open space. While there was significant variation between cities, policies were often inconsistent with evidence about how to achieve liveability. No Australian city performed well on all liveability domains. Even modest policy targets were often not achieved, and there were significant spatial inequities in policy implementation. With few exceptions, people living in outer suburbs had poorer access to amenities than inner-city residents. This study demonstrates the benefits and challenges of measuring urban policy implementation. Evidence-informed targets are needed in urban, transport and infrastructure policies designed to create healthy, liveable cities, to enable levels of (and inequities in) policy implementation to be assessed. Consistent standards for government spatial data would enable development of comparable indicators and cities to be directly compared.

The Urban Liveability Index: developing a policy-relevant urban liveability composite measure and evaluating associations with transport mode choice.

BACKGROUND: Designing healthy, liveable cities is a global priority. Current liveability indices are aggregated at the city-level, do not reflect spatial variation within cities, and are often not aligned to policy or health. OBJECTIVES: To combine policy-relevant liveability indicators associated with health into a spatial Urban Liveability Index (ULI) and examine its association with adult travel behaviours. METHODS: We developed methods to calculate spatial liveability indicators and the ULI for all residential addresses in Melbourne, Australia. Associations between the address-level ULI and adult travel behaviours from the 2012-2014 Victorian Integrated Survey of Travel and Activity (VISTA) (n = 12,323) were analysed using multilevel logistic regression. Sensitivity analyses to evaluate impact of methodological choices on distribution of liveability as assessed by the ULI and associations with travel mode choice were also conducted. RESULTS: Liveability estimates were calculated for 1,550,641 residential addresses. ULI scores were positively associated with active transport behaviour: for each unit increase in the ULI score the estimated adjusted odds ratio (OR) for: walking increased by 12% (95% Credible Interval: 9%, 15%); cycling increased by 10% (4%, 17%); public transport increased by 15% (11%, 19%); and private vehicle transport decreased by 12% (- 9%, - 15%). CONCLUSIONS: The ULI provides an evidence-informed and policy-relevant measure of urban liveability, that is significantly and approximately linearly associated with adult travel behaviours in the Melbourne context. The ULI can be used to evaluate progress towards implementing policies designed to achieve more liveable cities, identify spatial inequities, and examine relationships with health and wellbeing.

Liveable for whom? Prospects of urban liveability to address health inequities.

The aspiration of liveable cities, underpinned by the New Urban Agenda, is gaining popularity as a mechanism to enhance population health and wellbeing. However, less attention has been given to understanding how urban liveability may provide an opportunity to redress health inequities. Using an environmental justice lens, this paper investigates whether urban liveability poses an opportunity or threat to reducing health inequities and outlines a future research agenda. Selected urban liveability attributes, being: education; employment; food, alcohol, and tobacco; green space; housing; transport; and walkability, were investigated to understand how they can serve to widen or narrow inequities. Some domains showed consistent evidence, others suggested context-specific associations that made it difficult to draw general conclusions, and some showed a reverse patterning with the social gradient, but with poorer outcomes. This suggests urban liveability attributes have equigenic potential, but operate within a complex system. We conclude more disadvantaged neighbourhoods and their residents likely have additional policy and design considerations for optimising outcomes, especially as changes to the contextual environment may impact neighbourhood composition through displacement and/or pulling up effects. Future research needs to continue to explore downstream associations using longitudinal and natural experiments, and also seek to gain a deeper understanding of the urban liveability system, including interactions, feedback loops, and non-linear and linear responses. There is a need to monitor neighbourhood population changes over time to understand how liveability impacts the most vulnerable. Other areas worthy of further investigation include applying a life course approach and understanding liveability within the context of other adversities and contextual settings.

The provision of urban green space and its accessibility: Spatial data effects in Brussels.

Urban green space (UGS) has many environmental and social benefits. UGS provision and access are increasingly considered in urban policies and must rely on data and indicators that can capture variations in the distribution of UGS within cities. There is no consensus about how UGS, and their provision and access, must be defined from different land use data types. Here we identify four spatial dimensions of UGS and critically examine how different data sources affect these dimensions and our understanding of their variation within a city region (Brussels). We compare UGS indicators measured from an imagery source (NDVI from Landsat), an official cadastre-based map, and the voluntary geographical information provided by OpenStreetMap (OSM). We compare aggregate values of provision and access to UGS as well as their spatial distribution along a centrality gradient and at neighbourhood scale. We find that there are strong differences in the value of indicators when using the different datasets, especially due to their ability to capture private and public green space. However we find that the interpretation of intra-urban spatial variations is not affected by changes in data source. Centrality in particular is a strong determinant of the relative values of UGS availability, fragmentation and accessibility, irrespective of datasets.

A method for the inclusion of physical activity-related health benefits in cost-benefit analysis of built environment initiatives.

The built environment has a significant influence on population levels of physical activity (PA) and therefore health. However, PA-related health benefits are seldom considered in transport and urban planning (i.e. built environment interventions) cost-benefit analysis. Cost-benefit analysis implies that the benefits of any initiative are valued in monetary terms to make them commensurable with costs. This leads to the need for monetised values of the health benefits of PA. The aim of this study was to explore a method for the incorporation of monetised PA-related health benefits in cost-benefit analysis of built environment interventions. Firstly, we estimated the change in population level of PA attributable to a change in the built environment due to the intervention. Then, changes in population levels of PA were translated into monetary values. For the first step we used estimates from the literature for the association of built environment features with physical activity outcomes. For the second step we used the multi-cohort proportional multi-state life table model to predict changes in health-adjusted life years and health care costs as a function of changes in PA. Finally, we monetised health-adjusted life years using the value of a statistical life year. Future research could adapt these methods to assess the health and economic impacts of specific urban development scenarios by working in collaboration with urban planners.

Public health and urban planning: a powerful alliance to be enhanced in Italy.

Urban planning has played and still plays a key role in improving urban health and indoor health. The authors sketch out the historical evolution of the relationships between Public Health and urban planning, in particular to what happened in Italy during the past 150 years. The authors suggest some lines for further research, but also describe some interventions that could obtain practical results in terms of health gains for the population.

From urban planning and emergency training to Pokémon Go: applications of virtual reality GIS (VRGIS) and augmented reality GIS (ARGIS) in personal, public and environmental health.

The latest generation of virtual and mixed reality hardware has rekindled interest in virtual reality GIS (VRGIS) and augmented reality GIS (ARGIS) applications in health, and opened up new and exciting opportunities and possibilities for using these technologies in the personal and public health arenas. From smart urban planning and emergency training to Pokémon Go, this article offers a snapshot of some of the most remarkable VRGIS and ARGIS solutions for tackling public and environmental health problems, and bringing about safer and healthier living options to individuals and communities. The article also covers the main technical foundations and issues underpinning these solutions.