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INFRASTRUCTURAL FRAGMENTATION INDEX (IFI)

Figure 7 - IFI index calculated for Veneto Region (Northern Italy) on the Municipal Unites.

Figure 8 - Relation between Urban density (UD) Figure 9 - Relation between Urban density (UD)
and IFI index on Lazio region landscape units and IFI index on Veneto Region municipal areas

Urban Fragmentation Index

On the basis of the consideration that, if the size of settlements is the same, then the
circular, polarised shape is the one that minimises environmental fragmentation, linear
urban fragmentation can be measured using the Urban Fragmentation Index (Romano
2002):

∑ Li * ∑Si

UFI =  ---ʌ'ʌ

Au

where:

Li = Maximum size of the linear urban barrier of the i type;

Si = Surface of the urbanised area of the i type;

Au = Area of the reference territorial unit;



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