Artículo
Fire patterns in central semiarid Argentina
Fecha de publicación:
01/2012
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Journal of Arid Environments
ISSN:
0140-1963
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Wildfires can cause severe impacts on the terrestrial ecosystems depending on their frequency and behavior. We studied the environmental factors influencing the spatial and temporal distribution of fires, their size and duration in the central semiarid Argentina. We identified fires using MODIS satellite data and we analyzed their association with climate and land cover/use patterns. Spatial and temporal fire patterns varied between eastern, central and western regions according to the presence of agriculture, shrublands and water deficits, respectively. The frequency and behavior of fires also varied temporally with water conditions. Years with low effective precipitations were characterized by an important hotspot density and fire number, as well as the months preceded by two months with low effective precipitation (r 2: 0.42; p < 0.0001). We observed a spatial delay of fires in a northeast-southwest sense, related to the delay of the spring beginning (r 2: 0.7594; p < 0.0001). The mean fire sizes and duration varied significantly among vegetation types (F: 10.76, p < 0.0001 and F: 3.703, p < 0.01). Fires were bigger in shrublands and longer in shrublands or forests regarding agricultural areas or degraded areas (F: 16.0, p < 0.0001). The results obtained would be useful to prevent/control fires and to preserve natural resources and human communities.
Palabras clave:
DURATION
,
FIRE OCCURRENCE
,
PROPAGATION
,
REMOTE SENSING
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Fischer, M. A.; Di Bella, Carlos Marcelo; Jobbágy, Esteban Gabriel; Fire patterns in central semiarid Argentina; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 78; 1-2012; 161-168
Compartir
Altmétricas