Ali Shakur; Raf'at Shokri; Morteza Zera'ati
Volume 16, Issue 64 , February 2008, , Pages 19-24
Abstract
City is considered as one of the human-made phenomena in the environment, created with the aims of settlement, livelihood provision, social and economic relations and so on, but these are not considered as urban aims. The man has provided his own environment and has begun to live in it. Cities should ...
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City is considered as one of the human-made phenomena in the environment, created with the aims of settlement, livelihood provision, social and economic relations and so on, but these are not considered as urban aims. The man has provided his own environment and has begun to live in it. Cities should be based on the role and responsibilities they have in their region, and be developed in all aspects in a manner that minimizes their negative effects. Therefore, urban planning needs to be implemented in such a way that settlements and organizational patterns and the type of human activities be looked upon as a large community. Therefore, the main goal is based on the principle that urban planning be coherent. The urban hierarchy, according to a definition, is the classification of cities located in a geographical area based on population indices and the importance of their official functions, so that they can be categorized into different groups by calculation and measurable order. As we know, urban hierarchy is uneven in many provinces of our country, and there are many differences between cities in terms of ranking according to indicators. The cities of Fars province do not have regular hierarchies, and certain causes and factors have lead these hierarchies to be problematic. In this research, the urban hierarchy of Fars province has been studied based on three different patterns, the results have been compared with each other, and its hierarchy has been determined and some strategies to improve its ranking have been presented.
Hossein Hataminejad; Rasul Darabkhani
Volume 15, Issue 60 , February 2006, , Pages 65-69
Abstract
The Central Place Theory of Walter Christaller, a well-known German geographer, was first proposed in his 1933 book "Central Places in South Germany". The term central point or place is used to refer to a location that supplies goods and services to its surrounding areas, and is thus central to several ...
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The Central Place Theory of Walter Christaller, a well-known German geographer, was first proposed in his 1933 book "Central Places in South Germany". The term central point or place is used to refer to a location that supplies goods and services to its surrounding areas, and is thus central to several areas and the source of their needs. In fact, this theory is designed to respond to the spatial distribution of cities and the systems of hierarchy among them, and the centrality of a site increases and decreases with corresponding increase and decrease in the level of service received by that location. In this paper, first the hypotheses and principles of the theory of Christaller are presented based on whose assumptions it can be said that in this theory all phenomena are placed in their ideal state, something that can be rarely found in reality. After assumptions, the urban hierarchy has been examined; according to his observations on central locations in southern Germany, Christaller found that there is a hierarchical system in the economic and administrative system of these central locations. His belief in the existence of a hierarchy among the central locations of the southern regions of Germany led him to classify them according to their population and degree of centrality. According to the Central Place Theory, the spatial distribution of central places takes shape in a regular geometric space that is displayed in the form of conventional and overlapping polygons (hexagons). After urban hierarchy, the concept of threshold and the concept of the sphere of influence of goods and services in the Central Location Theory, the factors affecting the return of consumers to the central location, the assessment of economic activities in a hierarchical system and the application of central places in regional planning are examined, and after reviewing these cases, Christaller’s theory has been evaluated, and finally a conclusion has been made.