Nonlinear Dynamics, Psychology, and Life Sciences, Vol. 12, Iss. 1, January, 2008, pp. 15-28
@2008 Society for Chaos Theory in Psychology & Life Sciences


The Fractal City Theory Revisited: New Empirical Evidence from the Distribution of Romanian Cities and Towns

Liliana Gligor, High School “V. Alecsandri”, Sabaoani Neamt, Romania
Mircea Gligor, National College “Roman Voda” Roman-5550 Neamt, Romania

Abstract: Some of the main ideas of the fractal city theory are briefly reviewed, and their applicability is tested for the medium and small-size Romanian urban settlements. The universality of Zipf law for cities and towns distribution is proved once again and a stochastic master equation is proposed in order to explain the empirical distribution. The urban structure of Bucharest is investigated as an example of medium-size city formed by merging some independent poles of growth. The Central Places Theory is found to be in disagreement with the real urban structure. Instead, the diffusion-limited aggregation and self-organized criticality mechanisms are investigated by means of some numerical simulations and are found to fit better the urban perimeter growth.

Keywords: Zipf law, master equation, diffusion-limited aggregation, self-organization, urban growth