scholarly journals URBAN SPRAWL PATTERN AND EFFECTIVE FACTORS ON THEM: THE CASE OF URMIA CITY, IRAN

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Jamal MOHAMMADI ◽  
Asghar ZARABI ◽  
Omid MOBARAK
Keyword(s):  
Developing Countries ◽  
Urban Sprawl ◽  
Urban Growth ◽  
Large Scale ◽  
Agricultural Land ◽  
Land Uses ◽  
Effective Factors ◽  
Substitution Process ◽  
Urban Contexts ◽  
The City

Urban sprawl has become a remarkable characteristic of urban development worldwide in the last decades. Urban sprawl refers to the extent of urbanization, which is a global phenomenon mainly driven by population growth and large scale migration. In developing countries like Iran, urban sprawl is taking its toll on the natural resources at an alarming pace. The purpose of this paper is to study urban growth and effective factors on them in the city of Urmia, Iran. We used quantitive data of the study area from the period between 1989 and 2007, and population censuses of Urmia. To measure the model of urban growth, Holderness and Shannon’s entropy were employed. The Urmia case is interesting for several reasons: first, it is a case of very fast urban growth even for a developing country; second, it illustrates how the fastest rates of urban sprawl may correspond to middle size cities rather than to large centers. Third, it portrays a land substitution process in which agricultural land is not the primary provider of urban land which is relatively rare in urban contexts, and fourth, it also illustrates how urban sprawl may also hide important internal land uses such as the presence of agricultural plots within urban boundaries.

scholarly journals Informal settlements in Baghdad city

2021 ◽  
Vol 263 ◽  
pp. 05001
Author(s):  
Anastasia Repeva
Keyword(s):  
Urban Sprawl ◽  
Research Methodology ◽  
Agricultural Land ◽  
Informal Settlements ◽  
Land Uses ◽  
Agricultural Lands ◽  
Close Attention ◽  
Residential Homes ◽  
Factors Affecting ◽  
The City

The research deals with the issue of slums, urban sprawl on agriculture land and its impact on the city of Baghdad. This topic needs close attention because it has become a problem facing the city of Baghdad through recruiting agricultural lands and converting them to residential homes in addition to the transgression on the state lands and building abuses. This research deals with the causes of slums, irregular urban sprawl and risks of excesses on land uses of land in Baghdad. In this research, we try to know the extent to which these problems have affected the city of Baghdad. The research methodology based on the descriptive methodology to clarify the factors affecting urban sprawl at the expense of agricultural land, using studies in government and service institutions and images from satellites to clarify the size of urban sprawl over periods after the 2003 war. Finally, a conclusion and future solutions were set to solve these problems.

scholarly journals Urban Sprawl Analysis using GIS Application of Bhagur City

2021 ◽  
Vol 9 (9) ◽  
pp. 861-868
Author(s):  
Keyur Rai
Keyword(s):  
Remote Sensing ◽  
Urban Sprawl ◽  
Urban Growth ◽  
Growth Pattern ◽  
Agricultural Land ◽  
Urban Housing ◽  
Shannon’S Entropy ◽  
Shannon's Entropy ◽  
Landcover Change ◽  
The City

Abstract: The word “Urban Sprawl” means growth is more than the normal and the criteria that makes it different from urban growth is this excessive nature. Cities grow continuously and planned growth is achieved when there is a right balance between urban growth and urbanization. But when growth is above normal its pressure on the region and the city will face major new challenges. Urban sprawl is unrestricted growth in many urban housing areas, business development and roads in large parts of the world, without worrying about urban planning. Urban Sprawl are of three types i.e., linear growth, cluster growth and leapfrog growth. This paper inspect the use of Remote Sensing and GIS in mapping of urban sprawl (1990-2021) and landuse/ landcover change detection to detect changes that has been taken place between these periods in Bhagur city. The paper helps to study the software such as ArcGIS, used to classify between built up and agricultural land using temporal signatures obtained from satellite images. To numerically understand the growth pattern Shannon’s entropy is used. Shannon’s entropy is used as an index to quantify the degree of dispersion or concentration of built-up areas. Entropy approach shows concentration growth pattern in Bhagur city. Keywords: Urban Sprawl, GIS, Remote sensing, Land use/ Land cover, Shannon’s entropy.

scholarly journals Impacts of Urban Sprawl on Livability in Kaduna Metropolis, Nigeria

2020 ◽  
pp. 334-343
Author(s):  
Nuhu H. Tini ◽  
Bartholomew Joshua Light
Keyword(s):  
Land Use ◽  
Urban Sprawl ◽  
Urban Growth ◽  
Land Use Planning ◽  
Urban Poor ◽  
Developed Countries ◽  
Economic Effects ◽  
Public Facility ◽  
Residential Areas ◽  
The City

Urban sprawl is a global phenomenon in the contemporary era. It is mostly taking place in the less developed countries due to natural increase and consistent movement of people into the mega cities and large urban centers. The phenomenon has globally gained attention from diverse researchers in the field of urban geography, environmental studies, city and region planning in view of its significant influence on the urban environment. However, the effect of sprawl on urban livability and economy in Nigerian cities is scarcely investigated especially in Northern Nigeria. This research explores the social and economic effects of urban sprawl in Kaduna metropolis. Remote Sensing and Geographic Information System (GIS) Technologies were applied for the analysis. The study found that Kaduna metropolis has experienced a progressive increase in the built-up area; in 2006 it had an aerial coverage of 13,980 hectares, a rise of 107.91% from 2001 aerial coverage of 6724 hectares. In 2012, the city had an aerial coverage of 15,808 hectares, an increase of 13.08% from 2006. Conversely, there has been a remarkable decrease in percentage of vegetation (1,458 hectares) and agricultural (11,739 hectares) land areas. In turn, such changes has adversely affected urban facilities or utilities such as pipe-borne water, electricity, health facilities, schools, security, transportation, wastewater infrastructures and fire safety services, which has become overstressed. Economic crisis has manifested in the rise of unemployment and escalating number of urban poor. Residential land use has encroached into open spaces while commercial activities overrun residential areas. Increase in distance and journey time make travel cost unbearable to the common man. These and social fragmentation retard livability in the city. Thus calls for a balance sustainable development in Kaduna metropolis and effective management of urban growth by the Kaduna Capital Development Board Authority. In due course, smart growth policy, growth management, urban containment, effective land use planning and public facility adequacy have been recommended to foster viable urban growth in Kaduna city and elsewhere.

scholarly journals Urban sprawl into the Niagara Region: the effect of urban encroachment on agriculture seen through the use of remote sensing applications and landscape metrics

2021 ◽  
Author(s):  
Jessica Leigh-Anne Carvalho
Keyword(s):  
Satellite Imagery ◽  
Urban Sprawl ◽  
Landscape Metrics ◽  
Agricultural Land ◽  
Agricultural Practices ◽  
Detection Methods ◽  
Land Uses ◽  
Sensing Applications ◽  
Remote Sensing Applications ◽  
Landsat 5 Tm

The Niagara Region contains land that is ideal for agricultural practices. This thesis strives to illuminate whether or not urban growth in the Niagara Region is a detriment to agricultural land use. Using Landsat 5 TM and 8 OLI-TIRS satellite imagery, spatial statistics, called landscape metrics, will be utilized to determine growth and loss of urban and agriculture land uses. Satellite imagery will be classified based on researched methods in order to create land class maps. These maps will then be utilized for landscape metrics using the Patch Analyst extension for ArcMap. Change detection methods will also be observed. The above methods will be done for the overall landscape of the Niagara Region. This study will find that agriculture in the Niagara Region is changing and endeavors to highlight how urban sprawl is part of the cause. Fragmentation will be discussed as part of the issues due to urban sprawl.

scholarly journals Urban sprawl into the Niagara Region: the effect of urban encroachment on agriculture seen through the use of remote sensing applications and landscape metrics

2021 ◽  
Author(s):  
Jessica Leigh-Anne Carvalho
Keyword(s):  
Satellite Imagery ◽  
Urban Sprawl ◽  
Landscape Metrics ◽  
Agricultural Land ◽  
Agricultural Practices ◽  
Detection Methods ◽  
Land Uses ◽  
Sensing Applications ◽  
Remote Sensing Applications ◽  
Landsat 5 Tm

The Niagara Region contains land that is ideal for agricultural practices. This thesis strives to illuminate whether or not urban growth in the Niagara Region is a detriment to agricultural land use. Using Landsat 5 TM and 8 OLI-TIRS satellite imagery, spatial statistics, called landscape metrics, will be utilized to determine growth and loss of urban and agriculture land uses. Satellite imagery will be classified based on researched methods in order to create land class maps. These maps will then be utilized for landscape metrics using the Patch Analyst extension for ArcMap. Change detection methods will also be observed. The above methods will be done for the overall landscape of the Niagara Region. This study will find that agriculture in the Niagara Region is changing and endeavors to highlight how urban sprawl is part of the cause. Fragmentation will be discussed as part of the issues due to urban sprawl.

Urban Sprawl Modeling using RS and GIS Technique in Kirtipur Municipality

2013 ◽  
Vol 12 ◽  
pp. 50-56
Author(s):  
Bikash Kumar Karna ◽  
Umesh Kumar Mandal ◽  
Ashutosh Bhardwaj
Keyword(s):  
Population Growth ◽  
Urban Sprawl ◽  
Urban Growth ◽  
Large Scale ◽  
Land Use Changes ◽  
Urban Land Use ◽  
Remotely Sensed Data ◽  
Rs And Gis ◽  
Trend Pattern ◽  
Gis Technique

Urban sprawl refers to the urbanization extent, which is mainly caused by population growth and large scale migration and it is a global phenomenon. In developing countries like Nepal, where the population growth and internal migration rate in urban area is high, it has posed serious implication on the resources of the region. Effective and efficient infrastructure planning of an urban environment require information related to the rate of urban growth along with its trend, pattern and extent of urban sprawl. The pattern and extent of urban sprawl is identified and modeled using remotely sensed data along with collateral data. RS and GIS are used to analyze and interpret the urban land use changes. Cellular Automate Markov (CA-Markov) process is used to urban sprawl modeling to identify possible pattern of sprawl and subsequently predict the nature of future sprawl Nepalese Journal on Geoinformatics -12, 2070 (2013AD): 50-56

scholarly journals Land Use/Cover Change Detection and Urban Sprawl Analysis in Bandar Abbas City, Iran

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Mohsen Dadras ◽  
Helmi Zulhaidi Mohd Shafri ◽  
Noordin Ahmad ◽  
Biswajeet Pradhan ◽  
Sahabeh Safarpour
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Urban Sprawl ◽  
Large Scale ◽  
Land Use Changes ◽  
Urban Region ◽  
Aerial Photos ◽  
Bandar Abbas ◽  
The City

The process of land use change and urban sprawl has been considered as a prominent characteristic of urban development. This study aims to investigate urban growth process in Bandar Abbas city, Iran, focusing on urban sprawl and land use change during 1956–2012. To calculate urban sprawl and land use changes, aerial photos and satellite images are utilized in different time spans. The results demonstrate that urban region area has changed from 403.77 to 4959.59 hectares between 1956 and 2012. Moreover, the population has increased more than 30 times in last six decades. The major part of population growth is related to migration from other parts the country to Bandar Abbas city. Considering the speed of urban sprawl growth rate, the scale and the role of the city have changed from medium and regional to large scale and transregional. Due to natural and structural limitations, more than 80% of barren lands, stone cliffs, beach zone, and agricultural lands are occupied by built-up areas. Our results revealed that the irregular expansion of Bandar Abbas city must be controlled so that sustainable development could be achieved.

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.

Scale-dependent patterns of deforestation in the Brazilian Amazon

2006 ◽  
Vol 33 (3) ◽  
pp. 203-211 ◽  
Author(s):  
ROBERT M. EWERS ◽  
WILLIAM F. LAURANCE
Keyword(s):  
Large Scale ◽  
Amazon Basin ◽  
Agricultural Land ◽  
Brazilian Amazon ◽  
Small Scale ◽  
Land Uses ◽  
Tropical Landscapes ◽  
Isolation Effects ◽  
Formal Test ◽  
Geographical Locations

Tropical forests of the Amazon Basin are being rapidly converted to agricultural land uses and fallow land, resulting in accelerating rates of forest loss in one of the world's most biodiverse ecoregions. This process has been extensively described and modelled, but as yet there has been no formal test of how the spatial patterns of deforested and fragmented areas change with the spatial scale of forest clearings. It was hypothesised that different land-use practices are driving small and large clearings, with small-scale cultivators often creating small, irregularly shaped clearings and large-scale ranchers and soy farmers creating larger, more regular-shaped clearings. To quantitatively test this hypothesis, Mandelbrot's theory of fractals was applied to deforested areas in the Brazilian Amazon to test for scale-invariance in deforestation patterns. The spatial pattern of deforestation differed between small and large clearings, with the former creating more complex landscapes and with a threshold occurring at c. 1200 ha in area. As a consequence, the sizes and shapes of forest clearings, and hence the relative vulnerability of the remaining forest to edge, area and isolation effects, may differ systematically between landscapes with different deforestation drivers. Further tests of this hypothesis are needed to assess its efficacy in other tropical landscapes and geographical locations.

scholarly journals Assessing the Impacts of Urban Sprawl on Suburban Villages in the Bamenda Metropolitan Periphery, North West Cameroon

2019 ◽  
Vol 2 (2) ◽  
pp. p87
Author(s):  
Eleno Manka’a FUBE
Keyword(s):  
Food Security ◽  
Urban Space ◽  
Urban Sprawl ◽  
Agricultural Land ◽  
Field Surveys ◽  
Urban Food Security ◽  
North West ◽  
Master Plans ◽  
Landsat Satellite ◽  
The City

Man has been and remains mobile, conquering and impacting every space he occupies. Man’s impact on space has been more accentuated since the 20th century than erstwhile in history, owing to demographic explosion and more advanced technological innovations. Urban space and adjoining lands are impacted most compared to the rural milieu. This study examines the ramifications of rapid and disordered urbanisation on peripheral villages to the city of Bamenda. This is crucial in understanding the threats and consequences of the phenomenon of unending urbanisation on contiguous agricultural land. The trend of urbanisation and resultant impacts were ascertained by analysing data drawn from national census figures, LANDSAT satellite images and suitable field surveys. Analyses revealed that a growth of 14.6% of the population between 1973 and 2018 produced a corresponding sprawl of 97.54% of the spatial extent of Bamenda metropolis, which presently covers 40.96 times the spatial area it occupied in 1973. This has grave repercussions for contiguous agricultural land and urban food security. The paper posits that a scrupulous compliance with existing urban master plans and implementation of carefully designed policies to protect agricultural land are inevitable in checking urban growth and its induced effects; and guaranteeing urban food security.

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