Sprawl

Urban sprawl, or the unplanned and uncontrolled spreading out of built-up areas in Zaria urban area causes problems of congestion, poor urban basic infrastructure delivery and poor urban planning. This paper analyzed the pattern and implications of urban sprawl using GIS and Remote sensing as an improved approach to analyze and explain sprawling beyond the traditional spatial or cartographic mapping and monitoring method which lacks the effectiveness to analyze and explain the details of spatiotemporal dimensions of urban sprawl. Map overlay analysis was used to calculate the rate and magnitude of the growth pattern for the four epochs of 1976, 1990, 2000 and 2014 if it could be regarded as sprawl. Results revealed that ribbon and leap-frog pattern of sprawl had fully developed North-South at approximately 25km stretch (Kano-Kaduna road) and 16km East-West on the regional arterial roads (Sokoto road and Jos road). Findings also revealed that the sprawl patterns were as a result of rapid urban population growth, increase demand for land, poor urban planning and social segregation with their respective implications. The causes of having such widespread urban sprawl needs to be studied in order to control the City’s growth.

 Spatial expansion and land use changes in agricultural lands are among important factors contributing to environmental damages and disabilities of productive economy in the region especially in agricultural aspects. This trend is common in developing countries. These changes in land use usually occur by those who target agricultural lands for speculations and other abusing form of economy. In addition this trend also affects environment likewise economy and environment which is attributed as sprawl. Urumia Urban region gains valuable agricultural lands which plays a key role in in both environment and economy. In recent two decades according to excessive construction in the region these areas are turned out to be more of a recreational site for affluent families which has decreased agricultural functions there and also has damaged beautiful landscapes of the villages. Recent occurrence is resulted from not being cost effective agricultural activities and inefficiency of the market supplemented with not supporting agricultural activities. This has leaded that Urumia urban region go through a spatial expansion which differs considerably with urban sprawl. This paper is aimed to analyze effective factors on land se changes and the following sprawl by it. Moreover there are two main questions that should be answered: first is which factors contribute to spatial expansion in agricultural areas? How is attributed the sprawl dominating Urumia urban region? In order to analyze and producing status qua and current relationship between Urumia city and agricultural lands we used a descriptive and analytical method and in order to analyzing development process we went to the documents and finally in order to examine occurred changes we used from satellite photographs and cartographic photos in different periods. After gathering data and statistics and classification in the second stage by observing we tried to perfect the statistics. The results express that the absence cost effectiveness in agricultural activities and speculation in land and of course having nothing in common between users and speculators has resulted a new form of sprawl in Urumia which differs considerably with common forms of it. This new sprawl has features which sustains affluent interests.

 Spatial expansion and land use changes in agricultural lands are among important factors contributing to environmental damages and disabilities of productive economy in the region, especially in agricultural aspects. This trend is common in developing countries. These changes in land use usually occur by those who target agricultural lands for speculations and other abusing forms of economy. In addition this trend also affects environment likewise economy which is attributed as sprawl. Urumia urban region has valuable agricultural lands which plays a key role in both environment and economy. During the past two decades, according to excessive construction in the region these areas are turned out to be more of a recreational site for affluent families which has decreased agricultural functions there and also has damaged beautiful landscapes of the villages. Recent condition is resulted from not being cost effective agricultural activities and inefficiency of the market supplemented with not supporting agricultural activities. This has leaded that Urumia urban region goes through a spatial expansion which differs considerably with urban sprawl. This paper is aimed to analyze effective factors on land changes and the following sprawl by it. Moreover there are two main questions that should be answered: first, which factors contribute to spatial expansion in agricultural areas? How is the sprawl dominating Urumia urban region attributed? In order to analyze and produce status qua and current relationship between Urumia city and agricultural lands, a descriptive and analytical method were used and in order to analyze the development process the documents were considered and finally in order to examine occurred changes from satellite photographs and cartographic photos in different periods were used. After gathering data and statistics and classification, in the second stage, through observing it was tried to perfect the statistics. The results showed that the absence cost effectiveness in agricultural activities and speculation in land and of the differences between users and speculators have resulted a new form of sprawl in Urumia which differs considerably with its common forms. This new sprawl has features which sustains affluent interests.

Today each city due to natural limitations, facilities and planning policies has different growth pattern which according to its spread, has different consequences and results. Although there is a wide range of urban growth patterns, but the important thing is not diversity and number of models but is the absence of rules and methods of transition from one to another pattern (form). So this article review and analysis ways which we can achieve this transition in the pattern of urban growth. Evidence shows that in order to transition from the pattern of automobile-dependent city (modern) to post-industrial and post-modern models, there are different approaches, including urban containment, urban consolidation policies, new urbanism, smart growth, emphasis on infill development and transit-oriented development and it is considered that the most important thing in all of them, is the relationship between land use and urban transport. In fact, the key of many compact city debates is transit-based transportation systems and urban mixed landuse that reduces use of machine and limits travel time for commuters. Also transition has multi-level perspective: first are niches (technological innovation in transport and landuse, second are regimes (regulation and governance that provides appropriate frameworks, guidelines and rules for transition) and finally are landscapes (the broader conditions, environment and pressures for transition).