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Frizza et al. /
Qualità dell’ambiente urbano – XI Rapporto (2015)
ISPRA Stato dell’Ambiente 63/15 pagg. 4-63
5
Abstract
The population and its distribution on the territory are a pressure factor of great
importance. The people produce, in fact, pressures on the environment through the
exploitation of the natural resources, the waste generation, the change of the original
environment etc.
Therefore, among the many preliminary investigations for the predisposition of the
municipal urban planning, but also to other territorial levels, the demographic picture
is indispensable as a starting point for the reasoning essential.
The dimension and the structure of the population and the demographic dynamics to
them connected can be measured using a large number of indicators. The structural
characteristics concern the age, the sex, the civil state, the residence and the citizen
while those dynamics consider the flows of the population caused by the births and
deaths, migrations, formation and dissolution of the unions. In relationship to this, in
the present study they have been considered 6 indicators: Resident population,
Resident foreign population, Masculinity ratio, Age structure of the population, the
total growth rate, Population density.
In 2014, the resident population of the 85 municipalities is stable, the increase is in
fact 0.1% compared to an annual variation of the total Italian population of just
0.02%. As is predictable, between 85 municipalities studied, 76 have values negative
of natural balance and of the natural growth rate (2014). In addition it was also
considered the resident population moves daily (almost 8 million people) for the
purpose of study or work (Commuting). Who crosses the boundaries of 85
municipalities (outbound and inbound) it does so using mainly a mean of transport,
while 21% of those who move within the same goes walking.
The data are ISTAT source.
Keywords
Resident population, Age structure of the population, Population density, Commuting