A Novel Indicator for Assessing the Spatial Sustainability of Cities in Developing Countries - A Case Study of Xi’an City

2012 ◽  
Vol 616-618 ◽  
pp. 1335-1342 ◽  
Author(s):  
Xiao Hui Ding ◽  
Shuo Xin Zhang ◽  
Wei Zhou Zhong ◽  
Yu Jiang
Keyword(s):  
Landscape Ecology ◽  
Spatial Scales ◽  
Urban Expansion ◽  
Negative Effects ◽  
Rapid Urbanization ◽  
Social Ecological Systems ◽  
Sensing Technology ◽  
The City ◽  
Geographical Dimension

The geographical dimension of urbanization is of major importance in depicting the influences of urbanization on the development of a city, since complex social-ecological systems interact in a multitude of ways at many spatial scales across time. This research introduced an indicator for assessing the spatial sustainability of a city from the perspective of landscape ecology, to provide a reasonable way for quantifying the spatial dynamic of the urban area of a city and how close the pattern of urban expansion close to a ‘compact’ way. A case study has been done in Xi’an. With the application of remote sensing technology, landscape ecology and other necessary software, the spacial sustainability of Xi’an from 1988 to 2010 were calculated, the rapid urbanization in Xi’an has significantly promoted the spatial sustainability of city from 1988 to 2000 and 2006 to 2010, whereas exerted negative effects on the spatial sustainability of the city from 2000 to 2006.

scholarly journals Urban expansion indicators of cities "Case study for Arab cities

2020 ◽  
Vol 2 (1) ◽  
pp. 1-21
Author(s):  
Nabil T. Ismael Ismael
Keyword(s):  
Developing Countries ◽  
Urban Expansion ◽  
Decision Makers ◽  
Negative Effects ◽  
Urban Population Growth ◽  
The City ◽  
Density Population ◽  
Future Population

Urban population growth requires an appropriate and suitable place for future population to cope with the expected urban expansion of major cities in developing countries, and to identify an indicator urban expansion to guide planners, architects and decision makers, and help them reduce negative effects of city expansion with improvement in the ability to live in cities.  The density (population and building), fragmentation (saturation and openness) and compactness (proximity and cohesion) are the most important indicators of urban expansion of cities, which gives a clear perception of how city expands and possibility of adopting the most suitable ones when updating or preparing master lans. Most cities, especially Arab ones, suffer from excessive urban expansion, resulting in various urban problems affecting quality of life, services and city performance, which is the problem of research. This research is aimed at identifying factors influencing urban expansion of cities in developing countries when preparing for their future expansion, by analyzing the indicators of urban expansion of a set of cities to reach appropriate indicators for urban expansion sustainable future of the city to ensure orderly development of cities and make them more productive, more comprehensive and sustainable in upcoming decades.

Impact of rapid urbanization on the microclimate of Indian cities: a case study for the city of Bhubaneswar

2016 ◽  
Author(s):  
D. Swain ◽  
G. J. Roberts ◽  
J. Dash ◽  
V. Vinoj ◽  
K. Lekshmi ◽  
...  
Keyword(s):  
Rapid Urbanization ◽  
The City ◽  
Indian Cities

scholarly journals Scenario Analysis on Climate Change Impacts of Urban Land Expansion under Different Urbanization Patterns: A Case Study of Wuhan Metropolitan

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Xinli Ke ◽  
Feng Wu ◽  
Caixue Ma
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Urban Expansion ◽  
Regional Climate ◽  
Urban Land ◽  
Urban Land Use ◽  
Rapid Urbanization ◽  
Urban Land Expansion ◽  
The Impact

Urban land expansion plays an important role in climate change. It is significant to select a reasonable urban expansion pattern to mitigate the impact of urban land expansion on the regional climate in the rapid urbanization process. In this paper, taking Wuhan metropolitan as the case study area, and three urbanization patterns scenarios are designed to simulate spatial patterns of urban land expansion in the future using the Partitioned and Asynchronous Cellular Automata Model. Then, simulation results of land use are adjusted and inputted into WRF (Weather Research and Forecast) model to simulate regional climate change. The results show that: (1) warming effect is strongest under centralized urbanization while it is on the opposite under decentralized scenario; (2) the warming effect is stronger and wider in centralized urbanization scenario than in decentralized urbanization scenario; (3) the impact trends of urban land use expansion on precipitation are basically the same under different scenarios; (4) and spatial distribution of rainfall was more concentrated under centralized urbanization scenario, and there is a rainfall center of wider scope, greater intensity. Accordingly, it can be concluded that decentralized urbanization is a reasonable urbanization pattern to mitigate climate change in rapid urbanization period.

scholarly journals Adaptation of Leopold Matrix for Assessment of Environmental Impacts Caused by the Flower Avenue Project in Manaus City - Amazonas

2019 ◽  
Vol 7 (11) ◽  
pp. 517-525
Author(s):  
Diana Barbosa de Castro ◽  
Fabiana Rocha Pinto ◽  
David Barbosa de Alencar ◽  
Ricardo Silva Parente
Keyword(s):  
Decision Making ◽  
Soil Quality ◽  
Endemic Species ◽  
Matrix Method ◽  
Urban Expansion ◽  
Urban Mobility ◽  
Negative Effects ◽  
The Matrix ◽  
Urban Problems ◽  
The City

This study aims to describe the effects generated by the construction of Avenida das Flores, has the objective of evaluating the effects caused by an urban mobility project, located in Manaus-AM, and the use of some neighborhoods of the city is prohibited. . Through this process of urban expansion, it is necessary to search for alternatives to urban problems, in addition to seeking solutions for the traffic disorder, a lack of urban mobility due to the difficulty of movement of people living in the more remote neighborhoods of central Manaus. . In this context, formulate the Matrix method of use based and adapted in the Leopold Interaction, which par excellence is dedicated to making relationships, noting the most relevant impacts. The survey allowed to obtain results that could indicate the negative effects caused by the environment in compartments such as: alteration (soil quality, area and microclimate), biotic reduction (reduction of endemic species and forest areas) and social (increase of vehicle circulation, attraction of new constructions and services, serving as a source of decision making, allowing to identify the most relevant effects for the use of instrument in decision making.

scholarly journals Understanding the Informal Morphology of Villages-in-the-City: A Case Study in Hanoi City, Vietnam

2021 ◽  
Vol 13 (23) ◽  
pp. 13136
Author(s):  
Ngo Kien Thinh ◽  
Yun Gao
Keyword(s):  
Urban Landscape ◽  
Morphological Characteristics ◽  
Production Of Space ◽  
Rapid Urbanization ◽  
Rural Villages ◽  
Self Organized ◽  
Informal Urbanism ◽  
The City ◽  
Practical Level

This paper explores the production of space in the villages-in-the-city (ViCs) through a morphological perspective. During the urbanization process, rural villages originally located in the peri-area of a metropolis are eventually merged into the urban landscape. Due to lack of proper planning, these villages have faced serious criticism due to informality, self-organized development and sub-standard living conditions, and planning policies tend to focus on demolition rather than on incrementally upgrading ViCs on the same site. In this paper, we focus on the fluidity of spaces in ViCs by drawing on a case study in Hanoi, Vietnam. The key research methods are mapping, observation and visual recording. The findings illustrate how informal urbanism works in ViCs regarding spatial structure, public/private interfaces and incremental upgrading. On a theoretical level, this research helps to enrich the description of the morphological characteristics of ViCs with relation to the effects of rapid urbanization. On a practical level, this study contributes to the ways in which researchers and planners can engage with incremental changes in the integrated village.

scholarly journals Floating Development: An Alternative to Land Reclamation for Waterfront Development: A Case Study for Design and Construction of VLFS in Wellington

2021 ◽  
Author(s):  
◽  
Xin Sharyn Qu
Keyword(s):  
New Zealand ◽  
Land Reclamation ◽  
Urban Expansion ◽  
Floating Structure ◽  
Waterfront Development ◽  
Political Conflicts ◽  
Land Scarcity ◽  
Water Based ◽  
The City

<p><b>In countries Japan, Netherlands, and Singapore they experience increasing land scarcity due to concentration of population or flooding issue. The growing concerns over environmental degration and political conflicts due to land reclamation means land-filled is no longer an acceptable way. Thus these countries put greater emphasis on investigating and application of other alternatives, such as floating structure, to allow for urban expansion. In particular, Very Large Floating Structure (VLFS) is becoming increasing popular and promising.</b></p> <p>This thesis presents a range of water-based development that include urban and architectural scale, historical and recent, and focuses on analysing the urban aspects. Projects of Japan, Netherlands and Singapore are researched at lesser detail for understanding technical, economy and political considerations in a floating development. The purpose of this thesis is to investigate the possibilities of having floating structure as a way to expand the city. The case study used is of VLFS on the Lambton Harbour of Wellington city, New Zealand, to demonstrate the feasibility.</p>

scholarly journals A Framework for Measuring Urban Sustainability in an Emerging Region: The City of Duhok as a Case Study

2019 ◽  
Vol 11 (19) ◽  
pp. 5402
Author(s):  
Azad Hassan ◽  
Zeenat Kotval-K
Keyword(s):  
General Trend ◽  
Urban Sustainability ◽  
Sustainability Indicators ◽  
The Political ◽  
Rapid Urbanization ◽  
Sustainable Practices ◽  
Urban Policies ◽  
The City ◽  
Urban Sustainability Indicators

The City of Duhok in Iraq, as one of the Kurdistan Region’s (KR) main cities, is concerned about sustainability but lacks the measures to guide urban policies. This study bridges this gap and offers an example of the use of urban sustainability indicators in an emerging region that experiences rapid urbanization and growth. The substantial objective of this study was to develop a functional framework of indicators to assess and measure urban sustainability for the city after KR’s declaration of autonomy in 1991 until 2010. That is, we limited our investigation to examining previous research, which decisively contains the approach to “measuring urban sustainability”. The study followed a three-step approach to examine urban sustainability as an integration of a few other relevant studies. The study concluded with two facts: First, the lack of progress on urban sustainability in the first decades resulted from the destabilized era that left the city administratively fragmented. Second, the political and economic watershed led to steady progress towards urban sustainability post-2005. The study highlights nine urban sustainability indicators, from a total of 39 indicators, that played an important role in navigating the general trend of urban sustainability in the city and how they can be used to promote future sustainable practices.

scholarly journals Integrating Data-Driven and Participatory Modeling to Simulate Future Urban Growth Scenarios: Findings from Monastir, Tunisia

Urban Science ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 10
Author(s):  
Mostapha Harb ◽  
Matthias Garschagen ◽  
Davide Cotti ◽  
Elke Krätzschmar ◽  
Hayet Baccouche ◽  
...  
Keyword(s):  
Urban Growth ◽  
Local Governments ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Sustainable Urban Development ◽  
Rapid Urbanization ◽  
Participatory Modeling ◽  
Urban Growth Scenarios ◽  
Business As Usual ◽  
The City

Current rapid urbanization trends in developing countries present considerable challenges to local governments, potentially hindering efforts towards sustainable urban development. To effectively anticipate the challenges posed by urbanization, participatory modeling techniques can help to stimulate future-oriented decision-making by exploring alternative development scenarios. With the example of the coastal city of Monastir, we present the results of an integrated urban growth analysis that combines the SLEUTH (slope, land use, exclusion, urban extent, transportation, and hill shade) cellular automata model with qualitative inputs from relevant local stakeholders to simulate urban growth until 2030. While historical time-series of Landsat data fed a business-as-usual prediction, the quantification of narrative storylines derived from participatory scenario workshops enabled the creation of four additional urban growth scenarios. Results show that the growth of the city will occur at different rates under all scenarios. Both the “business-as-usual” (BaU) prediction and the four scenarios revealed that urban expansion is expected to further encroach on agricultural land by 2030. The various scenarios suggest that Monastir will expand between 127–149 hectares. The information provided here goes beyond simply projecting past trends, giving decision-makers the necessary support for both understanding possible future urban expansion pathways and proactively managing the future growth of the city.

scholarly journals Urban form and vacant shops: can one explain the other? – a case study in Portugal

2017 ◽  
Author(s):  
Miguel Saraiva ◽  
Teresa Sá Marques ◽  
Paulo Pinho
Keyword(s):  
Urban Form ◽  
Urban Areas ◽  
Positive Association ◽  
Urban Morphology ◽  
Negative Effects ◽  
Economic Market ◽  
New Developments ◽  
Morphological Variables ◽  
The City

Shopping is much more than a wealth-generator in post-modern societies; it is intrinsically linked with the way people experience the city and an indivisible part of their day-to-day social experiences. Consequently, the literature has gradually recognized that commercial geographies are not just a consequence of economic market logics. It has been proven that there is a relationship between store-types and urban morphology, and that commerce is an important catalyst for urban regeneration and revitalization. Thus, the urban form can also be a cause for the lack of success of a shop. The amount of vacant shops has been signaled as an important problem in urban areas, affecting the structure and the identity of neighborhoods, and reflects the negative effects of the economic-crisis. Strategies to overcome this problem are usually economically-oriented and fail to capitalize on the new-found relationships between store-success and urban morphology. Thus this research wishes to test whether there are indeed correlations between specific morphological features and the existence of vacant shops, and consequently to propose how changes in the urban environment can contribute to overcome, and even prevent, such cases. The geographical distribution of vacant shops in a sample of Portuguese cities was set against morphological variables such as building age or centrality in the network (Space Syntax). Positive association was found, for example, between new developments and vacant shops, questioning the need for more store space in certain areas; and, particularly outside central neighborhoods, between open shops and high ‘choice’ (rather than high ‘integration’) axes.

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