http://www.cnr.it/ontology/cnr/individuo/prodotto/ID76709
Influence of seasonal weather variations and vegetative cycle on live moisture content and ignitability in Mediterranean maquis species (Abstract in rivista)
- Type
- Label
- Influence of seasonal weather variations and vegetative cycle on live moisture content and ignitability in Mediterranean maquis species (Abstract in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.foreco.2006.08.147 (literal)
- Alternative label
PELLIZZARO G., CESARACCIO C., DUCE P., VENTURA A., ZARA P. (2006)
Influence of seasonal weather variations and vegetative cycle on live moisture content and ignitability in Mediterranean maquis species
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- PELLIZZARO G., CESARACCIO C., DUCE P., VENTURA A., ZARA P. (literal)
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- Lavoro presentato alla V International Conference on Forest Fire Research, tenuta a Figueira da Foz, Coimbra, il 27-30 Novembre 2006 (literal)
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- CNR-IBIMET, Sassari (literal)
- Titolo
- Influence of seasonal weather variations and vegetative cycle on live moisture content and ignitability in Mediterranean maquis species (literal)
- Abstract
- Mediterranean maquis is an important component of
Mediterranean vegetation characterized by high specific and
structural heterogeneity and complexity. Flammability of
vegetation is influenced by several factors including structural
properties, chemical properties, and moisture content. The
moisture content of living plants is one of the most critical
parameter affecting fire ignition and fire propagation and
represents an important variable in fire behaviour modelling.
Plant water content variations are related to both environmental
conditions and ecophysiological characteristics of plant species.
As a consequence, knowledge of seasonal variation of
ignitability and vegetation moisture content could contribute
to identify critical periods of high fire risk in Mediterranean
maquis ecosystems.
Time to ignition and live fuel moisture content of four
dominant species (Erica scoparia L., Arbutus unedo L., Cistus
salvifolius L., and Lavandula stoechas L.) of an inland hilly
area located in North Eastern Sardinia, Italy, were measured
during the period March-November 2005. Phenological phases
of each species, moisture soil content and meteorological
variables were also observed during the experimentation.
Seasonal patterns of live fuel moisture content were compared
with two drought meteorological indices: Drought Code of the
Canadian Forest Fire Weather Index System and the Canopy
Drought Stress Index. The aims of this work were to evaluate
the influence of weather seasonal variations and vegetative and
reproductive cycle on live fuel moisture content and to analyze
the relations between the seasonal patterns of live fuel moisture
content of the studied species and the pattern of two drought
meteorological indices.
Two typical seasonal patterns of ignitability were identified.
Cistus and Lavandula seemed to be strongly sensitive to seasonal
changes. They showed a clear increase of fire risk, in term of
ignitability, during the drought period. For Arbutus and Erica, the
potential fire risk related to ignitability of the live fine fuel
appeared constantly high during the year and not strongly
dependent to seasons. These patterns were strictly related to the
seasonal variation of live fuel moisture content. Significant
regression equations were found between plant moisture content
and time to ignition. Live fuel moisture seasonal variation of
Cistus and Lavandula was also well correlated to values of the
drought indices examined. In particular, the Drought Code
seemed to be useful to modeling live fuel moisture variation in
Mediterranean species that are particularly sensitive to
meteorological conditions and characterized by clear and
important decrease of moisture content during drought seasons. (literal)
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