RT info:eu-repo/semantics/article
T1 Estudio de la severidad post-incendio en la Comunidad Valenciana comparando los índices dNBR, RdNBR y RBR a partir de imágenes Landsat 8
A1 Botella Martínez, M. A.
A1 Fernández Manso, Alfonso
A2 Ingenieria Agroforestal
K1 Ingeniería forestal
K1 Post-fire severity
K1 Initial assessment
K1 Mediterranean area
K1 Landsat 8
K1 dNBR
K1 RdNBR
K1 RBR
K1 Classification thresholds
AB [EN] In Mediterranean territories, with their characteristic climate that implies long periods of drought and rains often concentrated in torrential episodes, forest managers are faced with a series of decisions that can be urgent after a wildfire, some of them strongly correlated with the degree of damage caused by fire. In this sense, the object of this study was to provide a fast and reliable tool for the initial assessment of post-fire severity in these kinds of territories, by means of remote sensing techniques. Using Landsat 8 imagery, we have calculated three fire severity indices (dNBR, RdNBR, and RBR) for nine fires occurred in the Valencia region, a typical Mediterranean area. For each index, post-fire severity classification thresholds have been obtained taking into account the following categories: unburned, low, moderate, and high. These thresholds have been validated using, as ground-reference, aerial photographs taken from a helicopter. Afterwards, the degree to which post-fire severity was influenced by factors associated with pre-fire vegetation was evaluated, using a variance analysis. This analysis served to compare the three indices in terms of their robustness against the influence of these factors. With the obtained data, and with the study of classification accuracies employing the Kappa statistic, we were able to propose the most suitable index for calculating post-fire severity in the Valencia region, along with its operating thresholds. The findings suggest that the results could be extrapolated to other areas of similar characteristics.
PB Universidad Politécnica de Valencia
SN 1133-0953
LK https://hdl.handle.net/10612/20701
UL https://hdl.handle.net/10612/20701
NO M. A. Botella-Martínez, A. Fernández-Manso (2017) Study of post-fire severity in the Valencia region comparing the NBR, RdNBR and RBR indexes derived from Landsat 8 images.  Revista de teledetección: Revista de la Asociación Española de Teledetección, 49 https://doi.org/10.4995/raet.2017.7095
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 30-jun-2024