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    Título
    Burn severity metrics in fire-prone pine ecosystems along a climatic gradient using Landsat imagery
    Autor
    Fernández García, Víctor
    Santamarta, Mónica
    Fernández Manso, AlfonsoAutoridad BuleriaORCID
    Quintano Pastor, Carmen
    Marcos Porras, Elena MaríaAutoridad BuleriaORCID
    Calvo Galván, María LeonorAutoridad BuleriaORCID
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Ecologia
    Datos de la obra
    Remote sensing of environment, 2018, vol. 206
    Editor
    Elsevier
    Fecha
    2018-03-01
    Abstract
    Multispectral imagery is a widely used source of information to address post-fire ecosystem management. The aim of this study is to evaluate the ability of remotely sensed indices derived from Landsat 8 OLI/TIRS to assess initial burn severity (overall, on vegetation and on soil) in fire-prone pine forests along the Mediterranean-Transition-Oceanic climatic gradient in the Mediterranean Basin. We selected four large wildfires which affected pine forests in a climatic gradient within the Iberian Peninsula. In each wildfire we established CBI plots to obtain field values of three burn severity metrics: site, vegetation and soil burn severity. The ability of 13 spectral indices to match these three field burn severity metrics was compared and their transferability along the climatic gradient assessed using linear regression models. Specifically, we analysed the performance of 12 indices previously used for burn severity assessments (8 reflective, 2 thermal, 2 mixed) and a new reflective index (dNBR-EVI). The results showed that Landsat spectral indices have a greater ability to determine site and vegetation burn severity than soil burn severity. We found large differences in indices performances among the three different climatic regions, since most indices performed better in the Mediterranean and Transition regions than in the Oceanic one. In general, the dNBR-EVI showed the best fit to site, vegetation and soil burn severity in the three regions, demonstrating broad transferability along the entire climatic gradient.
    Materia
    Ecología. Medio ambiente
    Palabras clave
    Composite Burn Index
    dNBR-EVI
    Fire severity
    Pine forest
    Spectral index
    Mediterranean
    Climatic conditions
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/7481
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