RT info:eu-repo/semantics/article
T1 Burn Severity and Post-Fire Land Surface Albedo Relationship in Mediterranean Forest Ecosystems
A1 Quintano Pastor, Carmen
A1 Fernández Manso, Alfonso
A1 Marcos Porras, Elena María
A1 Calvo Galván, María Leonor
A2 Ecologia
K1 Ecología. Medio ambiente
K1 Fire damage
K1 Burn severity
K1 Albedo
K1 Landsat
K1 Mediterranean
AB Our study explores the relationship between land surface albedo (LSA) changes and burnseverity, checking whether the LSA is an indicator of burn severity, in a large forest fire (117.75 km2,Spain). The LSA was obtained from Landsat data. In particular, we used an immediately-after-firescene, a year-after-fire scene and a pre-fire one. The burn severity (three levels) was assessed in111 field plots by using the Composite Burn Index (CBI). The potentiality of remotely sensed LSA asan indicator for the burn severity was tested by a one-way analysis of variance, correlation analysisand regression models. Specifically, we considered the total shortwave, visible, and near-infrared LSA.Immediately after the fire, we observed a decrease in the LSA for all burn severity levels (up to 0.631).A small increase in the LSA was found (up to 0.0292) a year after the fire. The maximum adjustedcoe cient of determination (R2adj) of the linear regression model between the immediately post-fireLSA image and the CBI values was approximately 67%. Fisher’s least significance di erence testshowed that two burn severity levels could be discriminated by the immediately post-fire LSA image.Our results demonstrate that the magnitude of the changes in the LSA is related to the burn severitywith a statistical significance, suggesting the potentiality of immediately-after-fire remotely sensedLSA for estimating the burn severity as an alternative to other satellite-based methods. However,the persistency of these changes in time should be evaluated in future research.
PB MDPI
SN 2072-4292
LK http://hdl.handle.net/10612/11306
UL http://hdl.handle.net/10612/11306
NO Remote Sensing, 2019, vol.11, n. 19, 2309
NO P. 1-11
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 19-abr-2024