Download Trees outside the forest:

Trees outside the forest:
The “Dehesas” of Vilches and Arquillos
(Andalusia, South Spain)
a
aLes
paysages de l’arbre hors forêt: multi-valorisation dans le
cadre d’un développement local durable en Europe du Sud.
Paniza Cabrera, Antonia1 and Jiménez Olivencia, Yolanda2
1
Área de Geografía Física, Departamento de Antropología Geografía e Historia. Universidad de Jaén
2
Instituto de Desarrollo Regional. Universidad de Granada.
[email protected], [email protected]
• Introduction
• Study area
• Material and method
• Results
• Conclusion
Introduction
• Trees outside the forest
– FAO define by default in terms of the forest, as follows: trees
growing outside the forest and not belonging to the category of
forests, forest lands, or other wooded land.
– Trees outside forests are located on "other land", such as
agricultural land, built-up areas such as settlements and
infrastructure.
– Trees play a constant or occasional but always specific role in
livestock production systems
• The dehesas.
– Agrosilvopastoral systems are characterised by the dispersion or
individual or grouped trees associated with animal grazing and
cultivated areas.
– The trees are Mediterranean evergreen cork or holm oaks
Study area
MATERIAL AND METHOD
• Digital orthoimages
1956
• Information was
transferred into a GIS
2007
MATERIAL AND METHOD
• Land cover classes were separated firstly in
cultivated and non-cultivates areas.
• In the uncultivated areas we differentiated
between:
–
–
–
–
–
–
Shrubs
Pastures
Forest
Dehesa with Shrubs and pastures
Dehesa with pastures
Cultivated dehesa
Dehesa with bushes and pastures
Dehesa with pastures
Cultivated dehesa
Result
80
70
60
50
40
30
20
10
0
70
53
1956
2007
16
8
12
3
Cultivated
dehesa
Dehesa
with
shrubs
and
pasture
Dehesa
with
pasture
6
8
Pasture
14
Pine
10
Shrubs
with pine
Uses that have not changed
Uses that have changed
New coverages in the cultivated dehesa that have
Almond trees
changed 1956-2007
Cereal
0%
1%
0%
7%
10%
31%
Dehesa with shrubs and
pasture
Dehesa with pasture
Shrubs
Olive trees
0%
51%
Pasture
Pine
New coverages in the dehesa with shrubs and
pasture that have
changed. 1956-2007
0%
0%
0%
5%
Almond trees
0%
Cereal
Cultivated dehesa
Dehesa with pasture
Shrubs
Shrubs and Pine
51%
40%
Olive trees
Pine
4%
Conclusion
•Decrease of dehesa:
• Forest repopulations.
• Olive groves
Conclusion
• Changes in the dehesa
structure:
– Reduction of the cultivated
dehesa
– Increase in the denseness
of bushes and trees
Conclusion
• Reasons for the increase in the denseness
of bushes and trees:
– Abandonmed of the exploitation.
– Hunting activities
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