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Casuality and management of forest fires in Mediterranean en
Transcript of Casuality and management of forest fires in Mediterranean en
Casuality and management of forest fires in Mediterranean environments: an example for Catalonia
Badia, A.; Saun, D.; Cerdan, R.; LLurdés, J. C., 2001.
Berta Briñas García
University of Lisbon
Natural disturbance in the Mediterranean area.
Incidence growth in the last decades
Study of casuality
"Hazard-chain" model (Hohenemser et al., 1985)
Lot of inversion in extinction. Favor naturalized stands.
Prevention (land use planning).
Debate of casuality of Forest Fires:
Why incidence growth?
Climate change; Human behaviour
Decline of traditional agriculture
compact forest masses on abandoned agricultural lands
Energy transition towards fossil fuels
no more use of biomass in domestic and industrial activities
New conservation and leisure functions of forest
open to urban population neglecting traditional uses
"Hazard chain" model
Developed by Clark University researchers in the 1980s (Hohenemser et al., 1985).
To assess more closely the relationships between casuality and management of forest fires.
Human wants and needs
Adaptation for forest fires management
Main management options land use - initiating event
initiating event - outcome
Main management options in upstream parts of the chain
From management based on ignition control
To management based on
land use policies
Location of the study area of the affected area by the fire of July 4, 1994
about 98% of the forest area
colonized former agricultural fields
Highest forest cover in Catalonia =~ Europe
Lowest productivity in the continent
land use change and reduction of agricultural land
uncontrolled expansion of woodland
the problem is the inability to control the small number of fires
that are responsible for most of the area burnt
small proportion of fires are caused by careless conduct
the conservation of the forest masses of Catalonia
the Forestry Law of 1988
the low profitability of forestry facilitate the
CAUSED continuous growth of biomass
the unexpected effect of the law was turning existing forest masses
into ‘‘fire bombs’’
After the fires of 1994 and 1998, this error was RECOGNIZED
lack of resources
Using the hazard chain framework developed
by Clark researchers,
to compare conventional and alternative management options
policy orientation and social concerns
for your attention!!