Why people and firms are not evenly distributed around the world? Why do they not use land equally and why are firms and people are not equally spaced? Why are they concentrated in special areas although there is no geographical or structural difference? Reality shows a different picture to an equally distributed use of land and space: There is concentration of people and firms at special places or areas. The existence of cities is one of the questions that are interesting in an ex-post point of view as well as in future perspectives. The question is why cities exist and why are they different in size or in other words where do they locate and why as well as how do they develop. Therefore it makes sense to analyse the rationale for the existence of cities in terms of their determinants. There are dimensions that we should have a closer look at such as the localisation of cities, their growth and their different sizes. Firstly, different definitions of cities are mentioned. Afterwards the reasons for agglomeration forces through economies of scale that result in cities are described. Further its limits are analysed that bound the growth of cities. For explaining the different arrangement as well as the different sizes of cities the central place approaches of Christaller and Lösch are mentioned. Finally the empirical based rank-rule gives additional explanation for different sized cities.
Table of Contents
1. Introduction
2. Reason for Cities
3. Theory
4. Conclusion
Objectives and Research Themes
The primary objective of this study is to examine the economic rationale behind the existence, location, and development of cities, while simultaneously investigating why cities exhibit significant variations in size. By analyzing the determinants of urban agglomeration and the theoretical frameworks governing spatial distribution, the research aims to clarify how market-driven forces shape the urban landscape.
- Agglomeration economies and urban concentration.
- Limits to urban growth and the role of congestion costs.
- Central place theories of Christaller and Lösch.
- Empirical analysis of city size distributions and rank-size rules.
- Economic linkages between firms and urban productivity.
Excerpt from the Book
Reason for Cities
First of all, it is necessary to define a city: The technical definition names a city by including more than 25,000 habitants. Additionally it can be described as an urban political unit situated in a local economic region. M. Weber defines a city economically as a settlement the inhabitants of which live primarily off versatility trade and commerce than agriculture (Weber, 1958: 66). Moreover cities are characterised by a dense agglomeration of firms and people at one location (Glaeser, 1998: 140-1). Moreover activities of firms and people are grouped together geographically or in other words activities are clustered together in space (McCann, 2001: 53). The question occurs what are the reasons for this agglomeration? “The rationale for the existence of cities derives initially from the economies arising from specialisation of the labour force” (Vickerman, 1984: 9). Agglomeration forces can be seen as the raison d'être for the existence of cities and may describe as centripetally: On the one hand they attract new firms to a special location because of higher productivity and higher returns. On the other hand agglomeration forces exert a pull on labour through employment opportunities and wages, living conditions and other advantages of urban living (Duranton, 2000: 540; Vickerman, 1984: 10). There are several models existing that explain the existence
Summary of Chapters
Introduction: This chapter outlines the fundamental research question regarding why cities form, concentrate in specific areas, and differ in size, establishing the framework for the subsequent analysis.
Reason for Cities: This section defines the economic and political nature of a city and explores the agglomeration forces, such as specialized labor pools and economies of scale, that drive urban development.
Theory: This chapter evaluates central place theory, including the models of Christaller and Lösch, to explain the spatial hierarchy and size distribution of cities and industry locations.
Conclusion: This final section synthesizes the findings, confirming that urban concentration is driven by agglomeration advantages while acknowledging that changing technologies and congestion costs represent ongoing challenges for the future of urban size.
Keywords
Spatial economy, urban agglomeration, economies of scale, central place theory, city size distribution, rank-size rule, transport costs, urbanization, labor specialization, congestion costs, economic geography, Christaller, Lösch, market areas, industrialization.
Frequently Asked Questions
What is the central focus of this document?
The document focuses on the economic factors that drive the formation, location, and varying sizes of cities in the global landscape.
What are the key thematic areas addressed?
Key themes include urban agglomeration forces, economies of scale, the theoretical frameworks of urban hierarchy, and the empirical patterns observed in city size distributions.
What is the primary research objective?
The goal is to understand the rationale behind the existence of cities and to analyze the determinants that influence their development and growth limits.
Which scientific methods are employed?
The study utilizes a theoretical literature review, comparing the central place theories of Christaller and Lösch, and evaluates empirical findings through the lens of the rank-size rule.
What topics are covered in the main section?
The main sections cover the definition of cities, the mechanisms of agglomeration economies, the role of transport costs, and specific urban hierarchy theories.
Which terms best characterize this work?
The work is characterized by terms such as spatial economy, agglomeration economies, urbanization, and market-driven location forces.
How does the author define a city?
The author uses both a technical definition—a settlement with more than 25,000 inhabitants—and an economic definition based on trade and commerce rather than agriculture.
What role do congestion costs play?
Congestion costs act as a limitation to urban growth, encompassing factors like commuting expenses, pollution, crime, and rising land prices which counteract the benefits of agglomeration.
How does the rank-size rule work?
The rank-size rule posits a statistical regularity where a city's rank multiplied by its population corresponds to the population of the largest city within a closed system.
- Quote paper
- Susanne Jung (Author), 2003, Why do Cities develop? And why they are different in size?, Munich, GRIN Verlag, https://www.grin.com/document/53645
