scholarly journals UNSUSTAINABLE URBAN SPRAWL IN BRASILIA DF - LUZIÂNIA, ÁGUAS LINDAS DE GOIÁS AND VALPARAÍSO DE GOIÁS 2003-2014

2019 ◽  
Vol 6 (2) ◽  
pp. 50-70
Author(s):  
Yvette Mónica Carrillo Salomón
Keyword(s):  
Urban Sprawl ◽  
Environmental Planning ◽  
Urban Expansion ◽  
Federal District ◽  
Environmental Balance ◽  
Technological Platform ◽  
Urban And Environmental Planning

This article examines the urban expansion on Brazilian areas: Federal District, Luziânia, ÁguasLindasand Valparaíso de Goiás, in the period from 2003 to 2014. The study was conducted using the technological platform of ArcGis 10.1 which was employed to help in theanalysis of the urban sprawl. The result showed that the urban expansion evolves unsustainably lacking urban and environmental planning. This fact places a considerable risk not only the environmental balance but also the health of the dwellers in these places and surroundings.

scholarly journals VARIAÇÃO DO ÍNDICE NDVI E DA TEMPERATURA DA SUPERFÍCIE TERRESTRE NA MALHA URBANA DO MUNICÍPIO DE PARACATU –MG ENTRE 1985 E 2005

2020 ◽  
Vol 12 (2) ◽  
pp. 119-129
Author(s):  
Arthur Pereira dos Santos ◽  
Henzo Henrique Simionatto ◽  
Elson Mendonca Felici
Keyword(s):  
Surface Temperature ◽  
Environmental Planning ◽  
Urban Expansion ◽  
Well Being ◽  
Urban Network ◽  
Ndvi Index ◽  
Significant Difference ◽  
Urbanization Rate ◽  
Urban And Environmental Planning ◽  
Health And Well Being

This research aimed to evaluate, multitemporally, through the index of vegetation by normalized difference (NDVI) and the surface temperature (LST), the expansion of the urban fabric of the municipality of Paracatu (MG), which came to present, during the analyzed period , between 1985 and 2005, urbanization rate above Brazil. A multitemporal layout was prepared containing the results obtained and statistical analyzes were performed to verify if there was a significant difference between the years. There wasa variation of more than 2 ºC in the averages and maximum of your LST. Regarding the variation of the NDVI index, a reduction in vegetation was observed as the urban network expanded. It was possible to conclude that the urban expansion of the municipality of Paracatu, linked to the lack of urban and environmental planning, may be directly related to the variations in LST and the NDVI index, a fact that directly influences the health and well-being of residents.

scholarly journals Economic Crisis and Peri-Urban Agriculture: A Socio-Environmental Vision

2018 ◽  
Vol 9 (1) ◽  
pp. 78
Author(s):  
Luca Salvati ◽  
Silvia Pili
Keyword(s):  
Urban Agriculture ◽  
Urban Sprawl ◽  
Food Production ◽  
Urban Expansion ◽  
Agricultural Landscapes ◽  
Point Of View ◽  
Metropolitan Region ◽  
Local Actors ◽  
Growth And Change ◽  
New Strategies

In wealthiest countries, urban sprawl and peri-urban agricultural landscapes are strictly interconnected issues, with dispersed urban expansion causing inherent land-use conflicts. Interpreting latent socioeconomic processes at the base of peri-urban agriculture in southern Europe may benefit from a thorough analysis of metropolitan dynamics of growth and change, considering together morphological and functional issues. The approach proposed in this study is intended to provide an overview of new strategies for food production in highly fragmented landscapes, investigating the point of view of local actors operating in the primary sector. A preliminary survey carried out in the Athens' metropolitan region, Greece, provides a knowledge base to identify apparent and latent trends in peri-urban farming and the mutual implications for farmers and citizens.

scholarly journals Is Urban Sprawl Decoupled from the Quality of Economic Growth? Evidence from Chinese Cities

2019 ◽  
Vol 12 (1) ◽  
pp. 218 ◽  
Author(s):  
Xinhai Lu ◽  
Danling Chen ◽  
Yue Wang
Keyword(s):  
Economic Growth ◽  
Urban Sprawl ◽  
Urban Policy ◽  
Urban Expansion ◽  
National Level ◽  
Policy Makers ◽  
Chinese Cities ◽  
Technological Efficiency ◽  
Spatial Differences

This paper investigates how urban sprawl and the quality of economic growth interact and further studies the spatial-temporal decoupling characteristics of both. To achieve this, a framework was developed to better explain both the different dimensional effects urban sprawl exerts on the quality of economic growth and their reverse feedback relation. A sample of 285 Chinese cities (2003 to 2016) were analyzed, employing both a decoupling model and spatial correlation analysis. The findings indicated that urban sprawl and the quality of economic growth are related via scale, structure, technological efficiency, and technological progress effects. In practice, with increasing quality of economic growth, the urban sprawl index decreases at the national level. At prefecture-city level, the types of decoupling between urban sprawl and the quality of economic growth showed clear periodical and unbalanced characteristics. Furthermore, decoupling showed a significant agglomeration effect in Chinese cities, which is mainly mediated by the types High-High and Low-Low. This study provides a significant contribution to the relevant acknowledge system by providing a comprehensive theoretical framework toward an understanding of how urban expansion interacts with the quality of economic growth. Furthermore, their decoupling types and spatial differences that are critical for the urban sustainable development have been identified, thus providing several important insights for both academics and urban policy makers.

A Voice for Children and Young People in the City

2013 ◽  
Vol 29 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Judith Wilks ◽  
Julie Rudner
Keyword(s):  
Young People ◽  
Urban Design ◽  
Environmental Planning ◽  
Civic Participation ◽  
Local Environment ◽  
Policy And Practice ◽  
Children And Young People ◽  
Planning And Design ◽  
South Wales ◽  
Urban And Environmental Planning

AbstractA major challenge for researchers and urban planning practitioners is how to obtain meaningful and influential contributions on urban and environmental planning activities from children and young people within the constraints of adult policy and practice. The key elements of this challenge concern traditional methods of communication between ‘experts’ and children and young people in rationalist planning settings, versus emerging research in relation to children's and young people's views and agency around civic participation. This article will address the work of a number of researchers and practitioners who have grappled with the inherent tenions of making planning practice and urban design more inclusionary, while facilitating and respecting children and young people's civic participation. This article also advocates the advantages and strengths of their participation in planning and urban design processes.With a focus on two exploratory programs developed by the authors in the Australian states of New South Wales and Victoria, this article will demonstrate how the sharing of knowledge and skills between planning and design professionals and children and young people can lead to more meaningful and influential contributions from them. The programs examined were informed by leading practice both in Australia and internationally, and have assisted to develop children and young people's sense of spatial competence, and their confidence and efficacy in their local environment, contributing ultimately to their wellbeing. They have also supported the establishment of youth leadership groups with the confidence and skills to contribute to ongoing local government urban and environmental planning activities.

Monitoring of Rapid Urban Sprawl in Beijing with Time Series Remote Sensing Data and Analysis of Driving Forces

2013 ◽  
Vol 726-731 ◽  
pp. 4591-4595 ◽  
Author(s):  
Jin Ling Zhao ◽  
Dong Yan Zhang ◽  
Hao Yang ◽  
Lin Sheng Huang
Keyword(s):  
Economic Development ◽  
Urban Area ◽  
Urban Sprawl ◽  
Urban Areas ◽  
Driving Forces ◽  
Urban Expansion ◽  
Sustainable Urban Development ◽  
Significant Information ◽  
South Central ◽  
Urban Construction

Beijing has experienced a rapid urban sprawl over the past three decades, along with accelerated socio-economic development. This study investigated the change patterns and figured out the driving forces of urban expansion in the study area. To obtain urban class, decision tree classification techniques were used to identify the land cover types using four scenes of Landsat images from four periods of 1978-era, 1992-era, 2000-era and 2010-era. Then, the urban areas were identified by excluding water, agriculture, forest, grassland and bare land. The analysis results showed that: 1) urban construction land had been expanded very quickly and the urban area is mainly in the south-central part of the municipality; 2) the urban area increased by 96284.97 ha and the ratio was 5.88%; and 3) population growth, economic development, urban construction and industrial structure adjustment could explain the expansion. These analysis results can provide significant information on the monitoring and management of sustainable urban development.

scholarly journals Urban Sprawl Assessment and Its Effect on Land Use Transformation in Varanasi City using Remote Sensing and GIS

2019 ◽  
Vol 9 (2) ◽  
pp. 1056-1061
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Urban Sprawl ◽  
Urban Areas ◽  
Urban Expansion ◽  
Remote Sensing Data ◽  
Gis And Remote Sensing ◽  
Land Use Transformation ◽  
Vegetation Water ◽  
Almost All

This paper seeks to examine the effect of urbanization on changes in land use in the peri-urban areas of Varanasi city in India. The area of study is divided into six different classes of land use: built-up area, agriculture, vegetation, water bodies, sand and other land use. Using the maximum likelihood technique, Landsat 5 TM satellite data were used to identify land use and land cover changes from 1996 to 2017. The findings indicate a substantial increase in the built-up area, associated with reduced water and other land use cover. The urban sprawl is observed in almost all directions from the city boundaries, and along highways. Shannon’s entropy analysis reveals dispersed distribution of built-up area. The approach based on GIS and remote sensing data, together with statistical analysis, has proved instrumental in the analysis of urban expansion. It also helps to identify priority areas that require adequate planning for sustainable development.

scholarly journals MODELLING BELOW- AND ABOVE-GROUND UTILITY NETWORK FEATURES WITH THE CITYGML UTILITY NETWORK ADE: EXPERIENCES FROM ROTTERDAM

2018 ◽  
Vol IV-4/W7 ◽  
pp. 43-50 ◽  
Author(s):  
X. den Duijn ◽  
G. Agugiaro ◽  
S. Zlatanova
Keyword(s):  
Urban Space ◽  
Environmental Planning ◽  
Integrated Management ◽  
Domain Specific ◽  
Gis Applications ◽  
3D Data ◽  
Comprehensive Knowledge ◽  
Below Ground ◽  
Utility Network ◽  
Urban And Environmental Planning

<p><strong>Abstract.</strong> Precise and comprehensive knowledge about 3D urban space is required for simulation and analysis in the fields of urban and environmental planning, city administration and disaster management. In order to facilitate these applications, geo-information about functional, semantic, and topographic aspects of urban features, their mutual dependencies and relations is needed. Substantial work has been done in the modelling and representation of above-ground features in the context of 3D city modelling. However, the belowground part of the real world, of which utility networks form a big part, is often neglected. Existing data models for utility networks are generally very domain-specific and, therefore, not suitable either. This paper describes a 3D data modelling approach for integrated management of below-ground utility networks and related above-ground city objects. This approach consists of manipulating first the structure of existing utility data in the commonly used Feature Manipulation Engine ETL software in order to make the data compliant to the CityGML Utility Network ADE data model. Subsequently, workspaces are created that take care of storing the CityGML data into the free and open-source 3D City Database, which has been extended in order to manage utility network data, too. Moreover, the research shows the suitability of the extended 3DCityDB to perform graph-based topological operations by means of the PostgreSQL pgRouting extension. Lastly, the results are visualized in typical GIS applications, e.g. QGIS and ArcGIS.</p>

scholarly journals Spatio–Temporal Variations in Impervious Surface Patterns during Urban Expansion in a Coastal City: Xiamen, China

2019 ◽  
Vol 11 (8) ◽  
pp. 2404 ◽  
Author(s):  
Wang Man ◽  
Qin Nie ◽  
Lizhong Hua ◽  
Xuewen Wu ◽  
Hui Li
Keyword(s):  
Urban Sprawl ◽  
Urban Expansion ◽  
Temporal Variations ◽  
Environmental Indicator ◽  
Urban Centers ◽  
Southeastern China ◽  
Coastal City ◽  
Surface Patterns ◽  
Spatio Temporal ◽  
Land Surfaces

Impervious surfaces (IS) coverage is a quantifiable environmental indicator for understanding urban sprawl and its potential impacts on sustainability of urban ecological environments. Numerous studies have previously demonstrated global and regional IS variation, but little attention has been paid to the different internal and external patterns of IS development as urbanization progresses. This study estimates IS coverage in a subtropical coastal area of Xiamen, southeastern China, from Landsat TM/OLI images obtained in 1994, 2000, 2004, 2010, and 2015, and quantifies its spatio–temporal variations using IS change trajectories and radar graphs. During the study period, IS gradually expanded along the shoreline in a pattern resembling the shape of the bay. The land surfaces are classified into four zones: IS1 and IS2, dominated by cultivated land and forest; IS3, complex land use/coverage; and IS4, built-up areas. The progression and transformations of these zones highlight the main trends in IS changes in the study area. The trajectories of the zones form a layered structure in which the urban centers of each district progressively gain IS4, and transformations into IS3 and IS2 extend successively beyond the centers. The orientation of IS expansion in each of the six districts of Xiamen is revealed by radar graphs. The areas containing intermediate and high percentages IS each expanded in generally consistent directions throughout the study period, except in Tong’an district, which showed a change in the direction of expansion of its area of intermediate and high IS.

Research on Embodiment and Utilization of Environmental Value Oriented Spatial Planning of Harbin Marginal Area

2011 ◽  
Vol 90-93 ◽  
pp. 899-904
Author(s):  
Bin Xia Xue ◽  
Zhi Qing Zhao ◽  
Sheng Jun Liu
Keyword(s):  
Natural Environment ◽  
Rural Areas ◽  
Spatial Planning ◽  
Environmental Planning ◽  
Urban Expansion ◽  
Symbiotic Relationship ◽  
Design Strategies ◽  
Environmental Value ◽  
Marginal Areas ◽  
Urban And Rural Areas

As the joint connecting urban and rural areas, the special ways are needed in the spatial urban planning & design of the urban marginal areas. Based on the cases of environmental planning in Harbin’s marginal area under urban expansion background, the paper discusses the interdependent and symbiotic relationship between city and natural environment, and explores the effective modes finding, changing and utilizing the value elements of suburban environment. Finally the paper puts forwards spatial planning & design strategies oriented in the discovery and utilization of environmental value for urban marginal area according to the location characteristics of the urban marginal areas and value embodiment of natural environmental conditions, such as ecological priority, advantages intensification and images construction.

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