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Pinus halepensis regeneration after a wildfire in a semiarid environment: assessment using multitemporal Landsat images

AuthorsVicente Serrano, Sergio M. ; Pérez-Cabello, Fernando; Lasanta Martínez, Teodoro
KeywordsEbro valley
Vegetation recovery
Issue Date30-Mar-2011
PublisherInternational Association of Wildland Fire
CitationInternational Journal of Wildland Fire 20(2): 195-208 (2011)
AbstractWe studied the spatial and temporal patterns of forest regeneration using a 24-year time series of Landsat images and the normalised difference vegetation index (NDVI) in a homogeneous Pinus halepensis forest, 3000 ha of which were extensively burned in 1995. We demonstrated a progressive slow and linear recovery in NDVI values, based on Landsat images between 1997 and 2007. The forest tended to recover to pre-disturbance conditions, both with respect to the magnitude of the NDVI and in terms of the spatial pattern. We found that the spatial differences in the rates of NDVI recovery were not affected by the burn severity. Moreover, burn severity did not affect the rates of NDVI recovery after the fire. Although highly homogeneous P. halepensis regeneration was the dominant pattern in the study area (more than the 70% of the burn area showed positive and significant trends), some spatial differences in the magnitude of change were observed. The forest tended to recover the spatial pattern corresponding to pre-fire conditions, although it was difficult to establish whether terrain elevation or previous tree size and density were the main governing factors, given the strong relationship between them.
Description14 páginas, 8 figuras, 2 tablas.-- El documneto en word es la versión post-print del artículo.
Publisher version (URL)http://dx.doi.org/10.1071/WF08203
Appears in Collections:(IPE) Artículos
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