The territorial ontology formalizes and describes the Italian territory analyzing
it both from the administrative and the statistical point of view. In particular, from an administrative point of view, the territory is divided into:
State: Political entity that rules and exercises the sovereign power over a given territory and subject matters that belong to it
Geographical division: north-west, north-east, south, center and island
Region: local authority defined in the Italian legal system
Province: local authority having jurisdiction in a group of municipalities, not necessarily contiguous
Municipality: administrative body determined by specific territorial limits on which insists a portion of the population
Sub-municipal area: municipalities, districts, etc. present in the 34 municipalities with higher population size and more than 100,000 inhabitants
From a statistical point of view, the territory is partitioned as follows:
Census sections: portion of territory on which the ISTAT surveys are conducted. The average population is about 170 individuals
Census areas: groups of census sections, adjacent to each other, between census sections and locality of inhabited centers, belonging to the main centers
Locality: portion of territory, usually known by its own name, on which are located one or more grouped or scattered houses
The ontology also characterize the special areas, such as:
(i) geomorphological entities (ponds, fishing valleys, river, lagoon, ..),
(ii) administrative islands and (iii) areas in dispute,
and special nucleus such as: (i) hospitals, (ii) abbeys, (iii) shelters, .. for a total of 45 special nucleus.
All of these entities are linked together both by hierarchical relations and by other relations such as eassegnataa
that links an area in dispute with the municipality in which that area has been allocated,
or the relation econtesada that links the municipality claiming the disputed area.
Finally, connections with the equivalent concepts in the international Geonames ontology were made,
for example: for the rivers, defined as a special area, was made explicit the equivalence with the coding H.STM in the ontology Geonames.