Urban entropy vs sustainability: a new town planning perspective

The city, interpreted as a complex dynamic system, see grow out of control levels entropic related to human activities located in the territory. The main antagonist of urban sustainability is the entropy anthropogenic.The general crisis is due to the production of entropy inside the urban subsystems, which is transmitted, with a ripple effect, to all the others and to the entire city. For an endogenous malfunctioning in its parts or in its structure, a subsystem can be characterized as an "entropic generator " and triggers a chain of damage that can lead to the collapse of the entire urban system. Therefore it is possible to connect the urban crisis with the entropy produced, in particular within the socio-anthropic subsystem. In order to start appropriate processes that address the structure of urban system towards sustainability action is necessary, first, to reduce urban entropy. New procedures are to be developed for planning sustainable cities that, in a cyclic process, find their foundations also in the social capital. Entropy can distinguish anthropogenic direct action, which is expressed in the consumption of soil (such as where how long) and entropy induced action which is carried out in field activities related emissions of air pollution, electromagnetic noise, water. The paper starting from the studies developed by E. Tiezzi and the paper by F. Muller (presented at “Sustainable city 2012” in La Coruna), tries to identify the characteristics of anthropic entropy in order to propose the adoption of a new "urban ethic" becoming one of the generators of the Ecotownplanning. A new way of managing the urban change, in a sustainable manner, is now essential and the Ecotownplanning draws a perspective to which scientists, administrators and planners must move together.