Geography Reference
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as those identified in 1975 have now become consolidated urban areas (Figure 3). The land
uses showing the biggest increase in extension are scrub, tree formations and urban areas,
whereas croplands show a decrease.
Figure 3.
Land uses cartography (PNA)
1975
2009
%
Land
use
%
Land
use
Land use
%
PNA
%
PNA
Ha
Ha
Forest
11,326.8 21.4
45.0
12,306.1 23.2
47.1
Scrub
10,427.6 19.7
72.4
11,939.5 22.5
75.6
Pastures
15,185.9 28.7
50.2
15,157.0 28.6
54.4
Croplands
3,587.3
6.8
50.3
1,769.4
3.3
37.5
Rocky areas with scrub and trees
9,329.1
17.6
89.1
8,110.6
15.3
88.1
Reservoirs
1,017.5
1.9
88.7
10,17.5
1.9
88.7
Urban*
1,983.7
3.7
22.6
2,638.8
4.9
21.0
* Includes urban areas and areas under urban development
Table 2.
Land uses in 1975 and 2009
4.2. Dynamics and changes in a PeriUrban Park
The comparative analysis of the vegetation and land use maps enabled us to identify and
quantify five main change dynamics in the territory: urban development, scrub
encroachment, forest encroachment, agricultural abandonment and new crops. Most of
