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Central Place Theory of Christaller and Losch The theory was given by Walter Christaller in 1933. It is one of the 1st Locational theories in Human Geography Along with Von Thunen’s Agricultural Location theory & Weber’s Industrial location theory, Central Place Theory is one of the Locational Triads that became the basis of law making tradition in Quantitative Revolution phase in Geography (1950s) The objective of Quantitative Revolution phase was to develop Models & Theories for a more objective analysis in Geography & to make geography as one of the modern scientific discipline It is a normative deductive theory It is concerned with the way the settlements evolve and are spaced out It seeks to discover an order in size & spacing of settlement and functional relation between them i.e. Settlements size & its position in hierarchy, functional relation with other settlements, etc It seeks to find whether spacing of settlement is arbitrarily located or there is any logic or justification between order in size and spacing of settlement It is a theoretical account of the size and distribution of settlements within an urban system Assumptions The Locational Triad used the principle of simplifying assumptions to make lawmaking or to make generalizations relatively easier 1. Isotropic Surface i.e. Homogeneous surface, which is flat & monotonous without any variations in physical aspects of relief, climate, terrain & resources 2. The region is isolated i.e. Landscape understudy is isolated & has no connection with the rest of the world 3. All men are rational & economic i.e. people with perfect knowledge & unbounded rationality 4. All consumers have the same income & demand is the same 5. These consumers visit the nearest Central place that provides Goods & Services required by them as transport cost rises proportionally with distance 6. The entire landscape of settlements is to be fully served by a set of uniformly spaced central places 7. All settlements are point occupying i.e. Metropolis or Normal City, town or hamlet, all occupy the equal area 8. The settlement distribution is uniform with respect to resources 9. The population is homogeneously distributed i.e. population of city, town, hamlet, metro, etc is equal Concepts The Fundamental Concepts on which CPT is based are o Principle of Centralization o Principle of Hierarchy These principles govern the structure of all phenomenon Principle of Centralization Similar to all matter, all regions have a core and peripheral areas o e.g. The village has its core around a temple, mosque, church, chaupal, etc o e.g. Small towns serve as a core for several villages and hamlets It is not necessary that the core/focal point has to be at the geometric centre of the settlement Centralization is, thus, not a geometrical concept rather a concept concerning the relationship between a central and peripheral settlement Principle of Hierarchy Similar to most phenomenon arranged in a hierarchical fashion, Hierarchy also manifests itself in terms of territorial divisions and places e.g. State, District, and Tehsil complemented by place hierarchy of State capital, District headquarter and Tehsil headquarter The theory is based on 6 Derivative Concepts 1. 2. 3. 4. 5. 6. Concept of Central Place Concept of Central Place function Concept of Centrality Concept of Complementary Area Concept of Threshold Population Concept of Range of Goods & Services Concept of Central Place It is the principal settlement of any region i.e. chief/main settlement that provides goods & services of basic & regular nature to all surrounding regions depended on it(e.g. CBD) It is the focus point to all surrounding regions such as o Around a village – Town o Around a large town, or medium city – Metro City Around a metro city – Capital city Any yearly or weekly market do not serve as a focal point rather a permanent settlement or establishment Central Place is characterized by maximum pull & a high degree of functionality (e.g. Transport, Health, Education, etc) It is at the helm of affairs In the theory, Central Place is depicted by a single dimensionless point However, all urban places are not necessarily urban places e.g. A mining town or manufacturing town is not a central place, unless it has some tertiary activities catering to needs of surrounding villages o Concept of Central Place Function These are the set of Goods & Services offered by Central Place A central place offers more than one central place functions & all the functions are not of same hierarchical order rather some of them are of higher hierarchy & some of lower hierarchy (e.g. Supreme Court has a higher hierarchy and it is located in Delhi) Concept of Complementary Area Complementary area is the area of influence of a Central place i.e. the surrounding regions up to which central place provides its goods & services It would be larger for bigger and more important central places In theoretical sense, it is a collection of settlements of lesser importance In an isotropic surface, the distance decay function of every Goods & Services operates proportionally in all directions Distance Decay function states that the interaction between two locales declines as the distance between them increases and it is applicable for higher order functions In an isotropic surface, the complementary area is always a circle with the central place at the centre of this circle (i.e. there is uniformity) Concept of Threshold Population The minimum number of service users or customers that are required for the viability of central place functions and, therefore, the Central Place o e.g. Minimum Population to run the primary school – Population of village sufficient o e.g. Minimum Population to run Higher education – Large population required such as 2,3 villages o e.g. Minimum Population to run a university – Population of up to a city required o e.g. Civil Aviation – Population of a metro or large city Concept Of Range of Goods & Services Range is the maximum distance that a person or customer is willing to travel to avail the central place functions offered at the Central Place o e.g. Travel to a metro city to purchase a costly car o e.g. spinal cord injury – travel to AIIMS, cold & cough – travel to Primary Health Centre, etc Both the Threshold & Range are the properties of goods & services offered at the central place o e.g. Supreme Court at Delhi has maximum range and threshold