Changes In Urban Structure Research Articles

The gentrification of health: an analysis of its convergence

The article explores how gentrification impacts public health, with a particular focus on urban transformations and their repercussions on communities. Using a desk review methodology in the Scopus database, this study analyses the literature between 2018 and 2023 to identify how changes in urban structure influence the accessibility and quality of health services. It highlights that while gentrification can improve infrastructure and services, it can also exacerbate health inequalities and lead to the displacement of vulnerable populations. The analysis reveals the need to adapt medical education to these new urban challenges and suggests future lines of research to develop more equitable interventions. This multidisciplinary approach offers valuable insights for more inclusive policies that consider both urban development and health equity

Study on the change of urban spatial structure in Three Northeast Provinces of China based on the coupling relationship between POI and nighttime light data

Identifying and measuring urban spatial structure is a prerequisite for understanding urban spatial characteristics, formulating urban development strategies and testing urban planning results. As important data sources that can visually reflect the spatial distribution characteristics of urban socio-economic and other physical elements, urban points of interest (POI) and nighttime light data play an important role in the study of urban spatial structure. In this study, the main urban areas of 36 cities of the Three Northeast Provinces (Heilongjiang Province, Jilin Province, Liaoning Province) were selected as the study area, the POI (6,553,294 points of interest) and nighttime light data from 2010, 2016, and 2022 were chosen as the basic research data, and the methods of point kernel density estimation, data griddedness, and multifactor combination mapping were used to analyze the developmental dynamics of the urban spatial structure. The study demonstrated: (1) The spatial coupling consistency of POI and nighttime light data in the main urban areas of the Three Northeast Provinces was high, and both had good applicability in urban spatial structure research; (2) POI and nighttime light values formed the spatial pattern of “axis + core − periphery” with Shenyang, Dalian, Changchun and Harbin as the core, while the coupling relationship between the POI and nighttime light data identified that the main urban areas in the Three Northeast Provinces presented a centralized agglomeration type, a decentralized grouping type, a belt combination type and a radial expansion type urban spatial structure; (3) From the perspective of changes in the coupling relationship between POI and nighttime light, most of the main urban areas of resource-mature cities, resource-regeneration cities and non-resource cities were affected by the regional development agglomeration and the “T” railway network, and the “high/medium–high/medium” area showed an expanding tendency; most of the main urban areas of resource-decline cities were affected by the lower development potential and the deprivation of economic factors by the surrounding core cities, while the “high/medium–high/medium” areas showed a contracting tendency. The results of the study can provide a scientific basis and theoretical reference for the future adjustment of urban spatial structure, planning and construction as well as resource allocation in the main urban areas of the cities in the Three Northeast Provinces.

Effective Storm Water Management in The Urban Area – A Case Study

Urbanization and climate change have negative effects on the changes of natural precipitation and runoff regime, which results with more frequent floods and landslides. Besides of the increased quantity of the stormwater that drainage channels have to collect, neg- ative consequences of urbanization are also evident through increased pollution of runoff stormwater. Stormwater has immense impacts on urban flooding and water quality, leaving the marginalized and the impoverished disproportionately impacted by and vulnerable to stormwater hazards. However, the environmental health concerns of socially and econom- ically marginalized individuals are largely underestimated. Therefore stormwater manage- ment should be adapted to these changes so that the negative effects of new hydrological conditions of precipitation and runoff and stormwater pollution in the urban areas are mitigated. By 2050 the world population will grow to about 9 billion contributing to deep changes in urban areas structure. This would increase the effect of water deficiency and along with projected climate changes the impact of urban flooding, urban heat islands or drought. Stormwater threats can be mitigated with the application of stormwater management meth- ods named differently such as ‘Sustainable (Urban) Drainage Systems’ (SUDS), ‘Low Impact Development’ (LID) or ‘Best Management Practices’ (BMPs). This method includes differ- ent techniques such as Green roof, Rain barrels and cisterns, Infiltration basin, Detention Ponds, Retention Ponds, Green walls, Porous pavements, Bioretention basins, Bioswales. The aim of the research includes a study of the effectiveness of urban stormwater manage- ment techniques for the case study area. The concept of urban stormwater management techniques refers to the ability to provide and manage this primary resource in quantitative and qualitative terms in order to satisfy the future needs of population. The storm wa- ter management techniques provides several benefits: mitigation of the urban heat island effects, reduction of air pollution, additionally, It induces important hydraulic advantages acting as an effective tool for reducing flood risk in urban area with runoff reduction, attenuation and delay of the peak flow. The results confirm that bioretention basin, Permeable pavement, Grassed swale, Infiltration basin are effective techniques for the reduction of total runoff volume of rainwater falling on their area.

Structure of the modern city: context of the urban transformation

The article highlights the urgent issue of changes in urban planning structures in the process of development on the example of Ukrainian cities. The transformation of the city structure is one of its most dynamic properties in the process of its growth in space and time. Generalisation of the characteristic features of the development of historical cities makes it possible to identify typical models of their development and changes. The problems that arise in the process of transforming the urban planning structure of a modern city are very relevant today, as this process continues and is gaining momentum. The question is: how can innovative responses to complex problems are developed to help further optimal development and stop negative trends? The purpose of the publication is to reveal the essence of the processes of transformation of the modern city, divided by method, on the example of typical models in relation to the characteristics of certain periods of development of urban planning structures of both Western European cities and Ukrainian cities. Analysis and generalisation provide an opportunity not only to draw conclusions, but also to form a universal model as a basis for solving problems and to enable the modern city to improve the quality and comfort of its residents. The two ways of transforming the urban planning structure, according to certain periods of its development, described in the text of the article, provide an opportunity to structure and generalise dynamic processes on the example of both Western European cities and Ukrainian cities. Three typical models of urban transformation are distinguished by their characteristic features, according to the main historical periods, which make it possible to form a universal model as a basis for solving the problems of the modern city. Therefore, in order to improve the quality of life and comfort of residents, which is one of the sustainable aspects, all possible resources should be used in the process of creating a global integrated modern urban structure by combining all elements into a whole, capable of developing both today and in the future.

The Phenomenon and Case Analysis of "Tuku" Style

Since 2016, Tuku (, outdated fashion) style has emerged in Chinese social media and the manifestation of it varies. On the basis of a case study on fashion brand, the aim of thesis was to explore and analysis Tuku style with the main focus on Tuku styles characters and their representation, including the origins and connotation of it. The thesis found that the appearance of Tuku style based on the change of urban and rural structure in China during the millennium, and it has three distinguish characters: localized, retro, rebelious.

Inclusive digital economy, resource dependence and changes in the urban energy mix: City level analysis from China

The advent of an inclusive digital economy in China has reshaped urban dynamics, prompting shifts in resource reliance and altering energy consumption patterns. Given this, we conduct city-level data analysis to elucidate the intricate relationship between this digital transformation and changes in the urban energy mix from 2011 to 2022. This study provides an in-depth empirical analysis of how the digital economy (DE) affects the urban energy mix and explores the possible mechanisms of action behind it. The findings of the study are as follows: first, DE positively promotes the changes in the urban energy mix (CUEM); second, the promotion effect of DE on the urban energy mix is more obvious in southern cities, fifth-tier cities, cities with relatively low public environmental concern and higher degree of marketization; and third, the core mechanism indicates that DE promotes the change of urban energy structure by weakening the city's resource dependence (RSD). These findings provide valuable recommendations for city managers and policy makers, emphasizing that the importance of DE in the modern economic context is not limited to the economic realm, but also lies in its potential value in promoting environmental sustainability and social well-being.

Development-induced Changes in the ‘Urban Landscape’ and ‘Social Space’: A Case Study of Metro Rail’s Impact on the Hyderabad City

Scholars interested in urban space focus on topics such as place-making, place attachment, place identities and the politics of place. The expanded landscape of cities compels its inhabitants to constantly move into the city for livelihood and other activities. Consequently, urban anthropologists showed considerable interest in people’s mobility, infrastructure associated with mobility and mobility cultures in the city. However, in its dynamics, mobility alters the urban space, leading to the emergence of new frontiers for holistic urban phenomena. How urban space expansion causes mobility needs and the mobility solution, in turn, modifies urban space is the prime concern for the research. The present research focuses on the changes that occurred in the urban space with the onset of a single development programme introduced for people’s mobility needs. The study investigated ‘Metro’ commuters and non-commuters in Hyderabad City. Data for this urban ethnographic study of an Indian city were gathered using observation, semi-structured interviews and the case study approach. The study finds that Metro rail construction and operation for the mobility needs of the people have produced a new kind of techno-space on the roads of Hyderabad city. It also highlights how Metro pushed the ‘gentrification’ process to the forefront of urban social structural changes.

An Approach to Changes in population and urban structure due to the acceptance of evacuees due to the nuclear disaster

An Approach to Changes in population and urban structure due to the acceptance of evacuees due to the nuclear disaster

Change in urban forest age structure affects the value of ecosystem services provided

To achieve resilience goals, urban planners and decision-makers need accurate information on the benefits provided by urban trees and on the effects that management may have on them. This study investigates the impacts of management and disturbances on urban forest structure and function in Turku, Finland. Using a comprehensive urban tree database and the i-Tree software suite, we assessed the current structure and estimated the value of ecosystem services provided by Turku's urban forest. Additionally, we simulated changes in the urban forest over a 50-year period, considering different tree planting scenarios and the potential outbreak of the Asian longhorned beetle (ALB). Turku's urban forest comprised 38,438 public trees, dominated by Acer platanoides, Pinus sylvestris, Tilia × europaea, and Betula pendula. The estimated carbon storage was 12,336 t, valued at 1.98 million €, with an annual sequestration rate of 284 t (45,549 €/year). The trees also removed 8.97 t of pollutants annually, with an estimated value of 153,273 €. At the current rate of tree planting, the number of trees would decline over the course of 50 years resulting in a gradual decrease in the provision of ecosystem services. Although doubling the tree planting rate could slowly increase carbon storage and sequestration even under moderate ALB attack, it was insufficient to offset the damage caused by ALB if tree mortality rate reaches 50%. Compared to carbon storage and sequestration, changes in urban forest age structure had a more immediate impact on the removal of air pollution. These findings emphasize the importance of prioritizing investments in urban forests on grounds of their capacity to provide diverse ecosystem services. Incorporating these findings into decision-making processes would promote sustainable and resilient urban environments.

Networking and sustainable development of urban spatial planning: Influence of rail transit

Urban rail transit supports the development of megacities, while changes in urban spatial structure affect the structure of urban rail transit networks and the carbon emissions of vehicles. The interactions between urban rail transit and urban space in megacities form a complex spatial networking system. It has become important to guide cities toward low-carbon, energy-saving, and sustainable development through rail transit planning recently. To address this need, this study engages in theoretical clarification by, first, conducting a literature metrology analysis method to explore the relationship between rail transit, urban space, and sustainability. The analysis revealed that improving rail transit network efficiency for urban sustainable development. Next, this study summarized (1) the laws of the role of rail transit on urban spatial structure. (2) Pointed out there is a relative lack of research on the internal network structure of megacities. Lastly, the study summarized the influencing factors and optimization measures of network efficiency from existing literature and it is pointed out that (1) the optimization of network efficiency lacks consideration of sustainable urban concepts, and there are few studies on rail transit network efficiency. (2) The collaborative development of urban spatial networks driven by Big Data is a future research trend.

Exploring Spatiotemporal Variations in Land Surface Temperature Based on Local Climate Zones in Shanghai from 2008 to 2020

Understanding changes in urban internal structure and land surface temperature (LST) is essential. The local climate zone (LCZ) scheme has been extensively applied to characterize urban spatial structure, which has potential for urban climate research. We combined optical imagery and synthetic aperture radar (SAR) data (Landsat-5 and PALSAR for 2008; Sentinel-2 and PALSAR-2 for 2020) to map the LCZs in Shanghai, China. The results showed that the areas of open high-rise and open mid-rise buildings significantly increased from 2008 to 2020. Then, we investigated the spatiotemporal variations in LST based on the LCZ data from 2008 to 2020 using the grid method. The mean daytime LST (obtained from Landsat-5 and Landsat-8) was higher in 2020 than in 2008 for each LCZ type in spring. The mean daytime LSTs of compact mid-rise, compact low-rise, large low-rise and heavy industry zones were higher than those of other LCZ types in spring and summer. The mean nighttime LST (obtained from ASTER) in the downtown area was higher than that in the suburbs in summer. Furthermore, the mean nighttime LST of the built types was also generally higher than that of the natural types in summer. A comparison of the mean daytime LSTs in 2008 and 2020 revealed that the expansion trend of the higher LST areas in spring and summer is consistent with the expansion areas of the mid-rise and high-rise built types.

Urban Structure Changes in Three Areas of Detroit, Michigan (2014–2018) Utilizing Geographic Object-Based Classification

The following study utilized geographic object-based image analysis methods to detect pervious and impervious landcover with respect to residential structure changes. The datasets consist of freely available very high-resolution orthophotos acquired under the United States National Agriculture Imagery Program. Over the last several decades, cities in America’s Rust Belt region have experienced population and economic declines—most notably, the city of Detroit. With increased property vacancies, many residential structures are abandoned and left vulnerable to degradation. In many cases, one of the answers is to demolish the structure, leaving a physical, permanent change to the urban fabric. This study investigates the performance of object-based classification in segmenting and classifying orthophotos across three neighbourhoods (Crary/St. Mary, Core City, Pulaski) with different demolition rates within Detroit. The research successfully generated the distinction between pervious and impervious land cover and linked those to parcel lot administrative boundaries within the city of Detroit. Successful detection rates of residential parcels containing structures ranged from a low of 63.99% to a high of 92.64%. Overall, if there were more empty residential parcels, the detection method performed better. Pervious and impervious overall classification accuracy for the 2018 and 2014 imagery was 98.333% (kappa 0.966) with some slight variance in the producers and users statistics for each year.

Understanding the urban structure of the Algerian cities using emerging data: Case study of Algiers

Despite the identification of urban structure and urban centers being crucial for effective policy making (transport policies, urban risk management policies etc) there is a serious lack of studies covering developing countries' urban structure changes, especially north African cities. This is mainly due to the unavailability of the necessary data for urban structure identification. In this contribution we investigate the polycentric development in the Algerian capital, Algiers, using innovative data resources such as LandScanTM High Resolution Global Population Dataset and the POI approach, and spatial statistics. The findings suggest that the structure of Algiers is indeed developing into a polycentric city. The emerging data helped us overcome a serious methodological problem and objectively identify the city structure for better planning.

Impact of High-Speed Rail on Spatial Structure in Prefecture-Level Cities: Evidence from the Central Plains Urban Agglomeration, China

The impact of high-speed rail (HSR) on urban spatial structure has attracted much attention since the 1970s. It mainly realizes the change of urban spatial structure by affecting the spatial distribution of population and economy. Based on population and industry data on 29 cities in the Central Plains Urban Agglomeration (CPUA) located in central China during 2005–2017, in this paper difference-in-difference (DID) models are utilized to explore the influence of HSR on the spatial structure of prefecture-level cities at the single/multicenter levels according to the dimensions of polycentricity and dispersion. The main conclusions are shown as: (1) HSR on the spatial structure of the CPUA has a monocentric trend, but the characteristics of different prefecture-level cities vary. Currently, agglomeration remains the dominant force of the spatial structure of the CPUA in prefecture-level cities. (2) HSR have a noticeable effect on the spatial structure of industry, whereas the influences of the HSR on the spatial structure of the population are insignificant. Its development is the result of the combined effects of many factors, including natural factors, socioeconomic factors, policies, and transportation factors. Among the controlling factors, the administrative area, economic development level, urban population, and number of research units are the critical factors having a hold on the population spatial structure of the CPUA.

Imaginaries, directionalities, agency and new path creation

This study focuses on how imaginaries and directionalities, i.e. the interpretation of the urban economic history and the derived fundamental perceptions, conventions, mental representations and identities, influence stakeholder behaviour (agency) with regard to enabling or inhibiting new path creation. Applying concepts of evolutionary economic geography (EEG) and sociology, this paper aims to contribute to the literature on the impact of historical dependences on urban structural change processes. These theoretical reflections are applied to an empirical case study analysing the decline and renaissance of the textile industry in Mönchengladbach, Germany. The qualitative case study is based on a document-based analysis and seven guideline-based interviews with local experts from the textile and clothing industry. It concludes that imaginaries and directionalities can take effect via four mechanisms: communication and cooperation, motivation, training and employment, and research and innovation.

Hosszútávú lakáspiaci folyamatok Szeged lakótelepein – tartósan eltérő megítélések és ezek lehetséges okai

Housing markets are an under-researched scientific field in Hungarian urban geography. Though there are several articles that have investigated urban structure changes, social problems of housing estates, effects of regeneration programs and so on, a very limited number of publications have concentrated on market prices and the spatial structure they suggest. In a four-yearslong project, our research group has focused on the housing markets of second-tier cities and its influence on inner spatial structural processes inside and around those cities. In this paper we try to analyse one of our research-field regional centres (Szeged) and its large-scale housing estates to understand their different attractiveness in housing markets in a longer-term period (form 1997 to 2020). We try to analyse through primary data sources and collected data sources the heterogeneity behind the homogeneity of LHEs – in general – in the minds of sellers and buyers in housing markets. We used not just data analysis, but local development documents, Master Plans, and qualitative sources (semi structured interviews with local decision makers and experts) to understand what primary data suggest. The most impressive result of our research was that only one of the investigated qualitative parameters was count differing the sqm-price levels, the roofing (which apartments are the youngest in the LHEs housing markets). The effect of the Panel Programme in urban scale does not influence it, as even inside a certain LHE it has a weak effect on prices.

Gender and placemaking: talking to women about clean air and sustainable urban environments in changing cities

PurposeThis purpose of this study is to explore the voices of women in conceptualizing a city with clean air, and how this relates to urban structural changes being made more environmentally and socially sustainable.Design/methodology/approachA growing body of research suggests that gender is central to placemaking, and in dealing with environmental sustainability, fear of crime, longer life expectancy, unpaid work and economic inequality shape mobility and experiences of the city for women. In this context, the authors conducted a series of interviews with women in Greater Manchester and explored how they envision a city with clean air.FindingsFindings suggest that the conceptualization of a city with cleaner air is influenced by a range of both direct and indirect factors including safety, pleasantness, greenspace, litter and homelessness. Consequently, these can be powerful elements in designing relevant policies for women and for society at large and in communicating them effectively.Research limitations/implicationsThe major limitation of this study is that whilst it gives voice to women with different backgrounds (e.g. age, ethnicity or professional background) and experiences (e.g. number of children or preferred form of transport), it is not an encompassing voice of all women. For example, although the professional backgrounds of these women are diverse, they all hold a position of relative economic privilege, and as such it is important to acknowledge that these findings do not fully incorporate the voices of other, less privileged, women.Originality/valueThese interviews and their analysis present a novel exploration of the question of air quality and placemaking from a gender perspective, highlighting both a willingness to change and to support structural changes.

Evolution of subcenter structure in Bangkok metropolitan development from 1988 to 2018

Bangkok has been continuously struggling with unplanned urban expansion. It has been striving to transform itself from a mono-centric to a multi-centric urban structure through subcenter planning, and land use and transportation planning. To determine the effectiveness of its attempts, we conducted field surveys in Bangkok in 1988, 1998, 2008, and 2018 to collect agglomeration data on business and commercial activities in more than 60 subcenters designated in Bangkok's three comprehensive plans. We found that while the structures over the three decades have unique characteristics in terms of agglomeration size and kinds of business and commercial activities, each structure obtained from four time survey holds unique hierarchical order and functions correspondingly. This evolutional phenomenon we revealed from three decades survey data is unprecedented result and lure additional research toward deep thoughts on urban growth in rapidly growing metropolis. Another finding is that railway and highway network expansion together have influenced urban expansion and growth of subcenters. The extension of railway services to suburban areas, and the corresponding establishment of railway stations there, likely led to residential development in the areas, and the residents use private cars in their daily life to shop near subcenters while they commuted to the CBD by train. Therefore, urban growth will continue with the combination of railway and highway network expansion. We seriously doubt this would lead Bangkok metropolis to sustainable urban growth since it may produce low density urban area and consume green areas. In order to achieve compact urban growth in smarter way, it may need strict land use control around railway stations and along major road. Applied geographers can gain deep relevant implication of not just the superficial results, but the facts behind the phenomenon of the evolutional change of urban structure.

HISTORICAL URBAN ENVIRONMENT PRESERVATION MEASURES OF THE CITY AREAL

The article proposes the structuring of a set of measures aimed at protecting both individual monuments and objects, and the historical environment as a whole. The peculiarity of the monument protection approach to the historical area is the self-organization of the settlement, the environment is organized according to the level of elements - from individual objects to complexes and considers the historical area as an element of a more global urban environment. Once formed in the past, the structure of the historic city, is increasingly interfering, so the city loses its integrity. The city must fully comply with the new functions, so the processes of reconstruction taking place in it, changes in urban planning structure and the introduction of new elements are an integral part of development. Modern understanding of the monument essence dictates the need in preservation of its individual setting or in other words - the historical environment. The historical area is an instrument of historical environment’s urban protection, which provides: historic environment functions restoration; preservation of the historic environment functions; development of the historic environment functions. Within the historical areas, monument protection measures are reflected starting from the inventory of the monument resource, its further research, accounting, categorization and undoubtedly become the basis for determining the zoning of the area. The article describes the relationship between monument protection measures for the protection of the historical environment of habitats, as well as their division by the method of impact and the order of implementation. Thus, the first group includes basic practical measures - research, inventory, accounting, scientific study. The second group includes measures to ensure the systematization of objects - monitoring, integration, adaptation of monuments to modern life of the city, restoration and engineering protection of monuments. The third group includes mostly measures aimed at socialization, use and development of the historical environment - popularization, creation and formalization of protected areas. Groups of cultural heritage sites appear separately, for which monument protection concepts and legislation are poorly developed. The selected groups are clearly shown in the practical work on the creation of historical and architectural reference plans.

Studying Sharp Changes of Urban Landscape: Concession Within Agricultural, Hydraulic, and Maritime Public Domain in Kelibia City, Northern Tunisia

Coastal cities are desirable places to live and work which results in ongoing and increasing urbanization. In southern Mediterranean countries, coastal urbanization often occurs on croplands. This expansion is frequently on most productive croplands and emerges as an important sustainability concern. The aim of this study is to quantify urban growth over lands in Kelibia city, a coastal region in Tunisia that is one of the most threatened Mediterranean regions. We describe the changes in urban structures during the period of 2012–2016 by using Multi dates Pleiades images and using Otsu binary and sample-based Edge segmentation. Otsu segmentation showed higher accuracy than Edge segmentation method. Based on Otsu binary maps, urban areas were quantified in two dates. The results illustrated a dramatic increase of urban areas at the expense of agricultural land, maritime public domain (MPD) and hydraulic public domain (HPD). Analysis of parameters for urban sprawl quantification evaluated a sharp increase of urbanization rate, intensity, and dynamic degree. FRAGSTAT metrics described the change of landscape structure due to the increase of fragmentation pace, compactness degree, shape complexity, and proximity reduction. This significant urban change in extent and structure during a short temporal scale could be considered as a serious issue. For this reason, the implementation of systematic strategies for urban monitoring requires citizen awareness, law enforcement, and scientific supervision to mitigate land consumption, reduce flooding vulnerability, and to control the environmental impacts of urbanization.