Arturo Vinué, Marta Gómez; GMV; T:+34 918 072 100; [email protected][email protected]3 rd International Conference on Modelling, Monitoring and Management of Forest Fires 22 – 24 May, 2012, New Forest, UK 1 ArcFUEL Density Map based on the FCD Model. Case study: Sierra de las Nieves (Spain) Forest Fires 2012 Conference Session ArcFUEL: Advancing Forest Fuel Mapping techniques in Europe Arturo Vinué, Marta Gómez GMV | Isaac Newton 11 | 28760 Tres Cantos (Madrid), ES T: +34-918-072-100 | [email protected][email protected]
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FCD ModelDeveloped during ITTO Project PD 32/93 Rev. 2 (F), “Rehabilitation of Logged-over Forests in Asia-Pacific Region, Sub-project III” (JOFCA 1991, 1993)Forest status assessed on the basis of canopy densityFCD analysis utilizing data derived from four indices:
Advanced Vegetation Index (AVI)Bare Soil Index (BI)Shadow Index or Scaled Shadow
Data HarmonizationLANDSAT5 TM imagery converted from WGS84 UTM30 to ETRS89 LAEAMUCVA10 converted from ED50 UTM30 (official reference system in Spain until 2007). Conversion parameters as follows (IGN, 2005):
Noise Reduction ProcessNoise defined as an image component which interferes with the proper visual interpretation, such as, clouds, shadows, water bodies, etc.Three different masks carried out to accomplish further analysis out of the area of interest
Water BodiesCloudsCloud Shadows
Water bodies masked out using an ENVI spectral module (LOC – Water)Clouds and Shadows masked out using training areas (parallelepiped and maximum likelihood supervised classifications)
Synthesis Model. Vegetation Density %Vegetation Density is extracted after rescaling PCA1 as indicated in the figure below. Method used is a linear conversion
DiscussionQualitative assessment producing good resultsQuantitative assessment to be done. JRC Tree Cover map use to be investigatedNon-fuel masks (urban areas) to be applied to avoid miss-detectionsCorrelations between TI and SSI to be analyzed in order to include temperature information in the process (Black Soil Detection step)More detailed vegetation information to be used for validation
DiscussionShrublands vs Forest based on SSI to be investigatedDigital Elevation Models to be included in the process to mask shadowsDEM to produce altitudinal profiles in order to characterize shrublands vs forestry
Center for Earth Observation , University of Yale, 2012. Converting Landsat TM and ETM+ thermal bands to temperature. Available on: (http://www.yale.edu/ceo/Documentation/Landsat_DN_to_Kelvin.pdf) /Rikimaru, A., Roy, P.S., Miyatake, S.,2002. Tropical forest cover density mapping. Tropical Ecology 43(1): 39-47Rikimaru, A. and Tateishi, R., 2003. Development of Forest Cover Density Mapping Methodology. Proceedings CEReS International Symposium Remote Sensing, 41-49