scholarly journals EL ESPACIO DE LA VIALIDAD INTERURBANA Una lectura socioespacial de la expansión urbana por corredores: área metropolitana Santa Fe-Paraná [INTERURBAN ROAD SPACE A socio-spatial reading of urban expansion by corridors: Santa Fe-Paraná metropolitan area]

2020 ◽  
Author(s):  
Jaquelina Santiago
Keyword(s):  
Metropolitan Area ◽  
Urban Expansion ◽  
Santa Fe ◽  
Road Space

scholarly journals Warm Spells and Climate Risk to Human Health in the Mexico City Metropolitan Area

2020 ◽  
Vol 12 (3) ◽  
pp. 351-365
Author(s):  
Nuria Vargas ◽  
Víctor Magaña
Keyword(s):  
Mexico City ◽  
Metropolitan Area ◽  
Urban Expansion ◽  
Threshold Value ◽  
Early Warning Systems ◽  
Natural Vegetation ◽  
Mitigation Strategies ◽  
Maximum Temperature ◽  
Daily Maximum ◽  
Canopy Layer

AbstractDuring the second half of the twentieth century, rapid demographic growth and urban expansion led to the development of the Mexico City metropolitan area (MCMA) urban heat island (UHI). The thermal gradient between rural and urban regions is used to define the UHI in the transition zone along the 26°C isotherm of mean maximum temperature. As the MCMA expands, more natural vegetation is replaced with urbanization, and the spatial extent of the 26°C isotherm grows. The loss of natural vegetation, in a densely populated region of Mexico, leads to the formation of a canopy-layer UHI. The intensification of the MCMA UHI results in an increase in the frequency of daily maximum temperatures above 30°C (above 26°C on a weekly average), a threshold value that constitutes a natural hazard. Warm-spell occurrences are related to an increase in the number of acute diarrhea diseases (ADD), mainly in zones of the MCMA where the socioeconomic and environmental conditions are low (e.g., insufficient access to potable water). Vulnerable people are mostly located in new settlements along the periphery of the MCMA, where large numbers of hospital discharges due to ADD are reported. The combined effect of more frequent warm spells and increasing vulnerability results in higher levels of risk of suffering this type of health problem, mainly during the warmest part of the year. This analysis may serve to develop UHI mitigation strategies and early warning systems to manage high levels of ADD risk during warm spells.

scholarly journals MCR-Modified CA–Markov Model for the Simulation of Urban Expansion

2018 ◽  
Vol 10 (9) ◽  
pp. 3116 ◽  
Author(s):  
Xiuquan Li ◽  
Meizhen Wang ◽  
Xuejun Liu ◽  
Zhuan Chen ◽  
Xiaojian Wei ◽  
...  
Keyword(s):  
Land Use ◽  
Markov Model ◽  
Metropolitan Area ◽  
Urban Expansion ◽  
Ecological Factors ◽  
Sustainable Urban Development ◽  
Ecological Regions ◽  
Ca Model ◽  
Wuhan Metropolitan Area ◽  
Mcr Model

Ecosystem balance is an important factor that affects healthy and sustainable urban development. The traditional cellular automata (CA) model considers only a few ecological factors, however, the MCR model can account for ecological factors. In previous studies, few ecological factors were added to the CA model. Thus, the minimal cumulative resistance (MCR) model is combined with the CA and Markov models for the simulation of urban expansion. To verify the reliability of the method, the Wuhan metropolitan area was selected as a representative urban area, and its expansion in the past and future was simulated. Firstly, seven influential factors were selected from the perspective of location theory. The transformation rules of the comprehensive resistance surface followed by the modified CA–Markov model were constructed on the basis of the MCR model. The expansion of the Wuhan metropolitan area in 2013 was simulated on the basis of the 1996 and 2006 maps of land-use status, and the kappa coefficient was used as an index to evaluate the accuracy of the proposed method. Then, the expansion of the Wuhan metropolitan area in 2020 was simulated. Finally, the simulation results obtained with and without the MCR model were compared and analysed from the macro- and micro levels. Results show that the prediction accuracy of the two models differed for ecological regions, such as woodlands and water bodies. The similarities between the regions that were overestimated and underestimated by the MCR-modified CA–Markov model and non-MCR model may be attributed to solution of the land-use transfer matrix with the Markov model. The accuracy of the MCR-modified CA–Markov model for predicting forests, water and other ecological regions was higher than that of the Markov model. Therefore, the proposed MCR-modified CA–Markov model has potential applications in environmentally-conscious urban expansion.

scholarly journals Los costos de la expansión urbana: aproximación a partir de un modelo de precios hedónicos en la Zona Metropolitana del Valle de México / The costs of urban expansion: An approach based on a hedonic price model in the Metropolitan Area of the Valley of Mexico

2016 ◽  
Vol 32 (1) ◽  
pp. 37 ◽  
Author(s):  
José Alberto Lara Pulido ◽  
Gabriela Estrada Díaz ◽  
Juan Carlos Zentella Gómez ◽  
Alejandro Guevara Sanginés
Keyword(s):  
Population Growth ◽  
Mexico City ◽  
Metropolitan Area ◽  
Social Housing ◽  
Urban Expansion ◽  
Urban Housing ◽  
Hedonic Price Model ◽  
Hedonic Price ◽  
Price Model ◽  
Production Conditions

La Zona Metropolitana del Valle de México (ZMVM) ha experimentado una expansión no proporcional al crecimiento poblacional. Entre otras modalidades de poblamiento, la construcción de grandes conjuntos habitacionales periféricos propicia esa expansión, imponiendo costos individuales y sociales. Se revisan aquí las características de la expansión urbana en la ZMVM y las condiciones de producción de vivienda social periférica, la pérdida de ingreso de los individuos derivada de la distancia a los centros de trabajo y, a través de un modelo de precios hedónicos, se estima el rol de esa distancia en el diferencial de precios entre la vivienda periférica y la intraurbana.AbstractThe Mexico City Metropolitan Area (MCMA) has experienced an expansion that is not proportional to population growth. Among other forms of settlement, the construction of large, peripheral housing complexes promotes this expansion, imposing individual and social costs. This paper reviews the characteristics of urban expansion in the MCMA and production conditions of peripheral social housing, individuals’ loss of income due to the distance from the workplace and, through a hedonic price model, considers the role played by this distance in the price differential between peripheral and intra-urban housing.

scholarly journals Calidad de vida y crecimiento demográfico en el Gran Santa Fe / Quality of life and demographic growth in the Santa Fe Metropolitan Area

2014 ◽  
Vol 24 (42) ◽  
pp. 169-197
Author(s):  
Néstor Javier Gómez ◽  
Guillermo Angel Velázquez
Keyword(s):  
Quality Of Life ◽  
Population Growth ◽  
Metropolitan Area ◽  
Specific Effect ◽  
Santa Fe ◽  
Sources Of Information ◽  
Calidad De Vida ◽  
Demographic Dynamics ◽  
Palabras Clave

Las desiguales condiciones de vida en que se desenvuelve un conjunto poblacional urbano potencia problemas sociales y según sea la dinámica demográfica, requiere diferentes demandas y desafíos a las administraciones gubernamentales fundamentalmente de orden local a fin de reducir desigualdades. El Aglomerado Gran Santa Fe (AGSF) se caracteriza por desbalances en términos de calidad de vida y al mismo tiempo si bien presenta un crecimiento general bajo, éste no es homogéneo en toda la extensión del aglomerado. El presente artículo describe las etapas de elaboración de un índice de calidad de vida del AGSF mediante el cruce de datos aportados por variables socioeconómicas y ambientales que emanan de diversas fuentes de información y que fueron agrupadas en dimensiones ‘publicas’ y ‘privadas’ de los hogares, a fin de evaluar la incidencia específica de estos dos aspectos en la determinación de la calidad de vida. Otra cuestión destacada del trabajo radica en el análisis del vínculo entre crecimiento demográfico y calidad de vida, sin ánimo de establecer una relación directa causa-efecto, a fin de cotejar tendencias generales de expansión o retracción de los grupos poblacionales con diferente calidad de vida, y su correspondiente implantación espacial. Los resultados demuestran aspectos positivos de la propuesta metodológica seguida, pudiendo ser de utilidad la estrategia de tratar por separado las ‘dimensiones’ de la calidad de vida para el estudio de ámbitos urbanos. Palabras Clave: calidad de vida, dimensiones, crecimiento demográfico, Gran Santa Fe,  Argentina.  ABSTRACTThe unequal living conditions in an urban population generate social problems, and according to demographic dynamics, requires different demands and challenges to government administrations, mainly municipal, to reduce imbalances. The Santa Fe Metropolitan Area (AGSF) is characterized by imbalances in terms of quality of life and at the same time while having a low overall growth, this is not uniform throughout the all the metropolitan area. This article describes the stages of elaboration of an index of quality of life for the AGSF by crossing data provided by socioeconomic and environmental variables that emanate from various sources of information and were grouped into 'public' dimensions and 'private' of homes, in order to assess the specific effect of these two aspects in determining the quality of life. Another issue of the work lies in the analysis of the link between population growth and quality of life, without seeking to establish a relation direct cause – effect, to compare general trends of expansion or contraction of population groups with different quality of life, and its corresponding spatial implementation. The results show positive aspects of the methodology used, and may be useful the strategy to deal separately with the "dimensions" of the quality of life in order to further knowledge of the behavior of these aspects and their interrelations, in the study of urban spaces. Keywords: Quality of Life, Dimensions, Population Growth, Santa Fe Metropolitan Area, Argentina. 

scholarly journals Direction of urban expansion in the Bangkok Metropolitan Area, Thailand under the impacts of a national strategy

2021 ◽  
Vol 43 (3) ◽  
Author(s):  
Can Trong Nguyen ◽  
Diep Nguyen Thi Hong ◽  
Iabchoon Sanwit
Keyword(s):  
Urban Planning ◽  
Metropolitan Area ◽  
Urban Areas ◽  
Urban Expansion ◽  
National Strategy ◽  
Developed Country ◽  
Rural Districts ◽  
Research Findings ◽  
Urbanization Rate ◽  
Surrounding Areas

The Eastern Economic Corridor project (EEC), which spans over three coastal provinces east of the Bangkok Metropolitan Area (BMA), aims to transform Thailand into a developed country progressively. The EEC project promises to influence its territory and surrounding areas. We aimed to monitor the urbanized directions at the BMA during 2015-2017 and explore whether the BMA’s urban expansion trend is related to the EEC. The results revealed that the built-up areas increased by 24,033 hectares (22.8%). The urban districts with high urban density slowly developed, while the rural districts tended to urbanize with a high urbanization rate, approximately 6.8% per year. The BMA urban areas mainly expanded to the east (14.9% per year) and southeast (21.6% per year) under partial impacts from the EEC infrastructure projects. The research findings represent a concept for assessing urban expansion and pointing to the regions of concern, which will be meaningful for urban planning and policymaking.

scholarly journals MANAGEMENT ELEMENTS OF THE EMERGENT METROPOLITAN AREAS IN A TRANSITION COUNTRY. ROMANIA, AS CASE STUDY

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Ioan IANOȘ ◽  
Daniel PEPTENATU ◽  
Cristian DRĂGHICI ◽  
Radu Daniel PINTILII
Keyword(s):  
Metropolitan Area ◽  
Metropolitan Areas ◽  
Integrated Management ◽  
Urban Expansion ◽  
Descriptive Analysis ◽  
Rapid Expansion ◽  
Totalitarian Regime ◽  
Complex Processes ◽  
Countries In Transition

Complex processes, specific to the countries in transition, have had major impacts on restructuring the territorial management systems. The removal of restrictions of limiting urban expansion, imposed by the totalitarian regime, has allowed the rapid expansion of cities, beyond administrative boundaries, since 1989. The concept of emerging metropolitan area is explained by the multitude of problems posed by the sketching of these areas and especially by their functioning. Synthesizing, there are presented some managerial experiences considered inchoate, of some emerging Romanian metropolitan areas, with an emphasis on Bucharest’s metropolitan area. The conclusions of these descriptive analysis show the complexity of the problems that can occur during the process of building of the metropolitan areas under the circumstances of lack of an inter-municipal cooperation culture. Integrated management takes into account two realities: firstly, that the management of emerging metropolitan areas is trans-scalar, achieving the partial mergence of the management types (including the collegiate one), and secondly, that insuring a multi-level governance without implementing a polycentric intra-metropolitan development policy, is not sufficient.

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