doi: 10.5721/ItJRS20094126
 
ITALIAN JOURNAL OF REMOTE SENSING
 
On the spatial and temporal variability of Larch phenological cycle in mountainous areas
 
Roberto Colombo, Lorenzo Busetto, Mirco Migliavacca, Edoardo Cremonese, Michele Meroni, Marta Galvagno, Micol Rossini, Consolata Siniscalco and Umberto Morra di Cella
Received 06/04/2009 ; Accepted 21/04/2009 ; Published online 13/03/2011
Volume: 41   Year: 2009  Pages: 79 - 96
 
Abstract
In this study we analyze the spatial and temporal variability of European Larch phenological cycle in mountainous areas (Val d’Aosta, Italy) by using a combination of satellite data, primary topographic attributes (altitude and aspect) and phenological models driven by climatic variables. We apply a remote sensing technique based on a time series of MODIS TERRA 250m 16-days NDVI data for mapping the inter-annual variability of phenological cycle. Starting from the satellite green-up maps we spatially explored the response of larch phenology at different terrain conditions varying for altitude and aspect. A retrospective analysis based on climate-driven phenological models was finally conducted to evaluate the magnitude of temporal variability of Larch phenology in the last century.
 
Keywords
Larch phenology, MODIS data, alpine region, topographic attributes, phenological models.
 
 
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