RT info:eu-repo/semantics/article
T1 Short-Term Recovery of the Aboveground Carbon Stock in Iberian Shrublands at the Extremes of an Environmental Gradient and as a Function of Burn Severity
A1 Fernández Guisuraga, José Manuel
A1 Calvo Galván, María Leonor
A1 Fernandes, Paulo Alexandre Martins
A1 Suárez Seoane, Susana
A2 Ecologia
K1 Ecología. Medio ambiente
K1 Ingeniería forestal
K1 Allometric equation
K1 Burn severity
K1 Carbon stock
K1 LiDAR
K1 Shrubland
K1 2417.13 Ecología Vegetal
K1 3106.99 Otras (Incendios forestales)
K1 2506.16 Teledetección (Geología)
K1 3106.01 Conservación
K1 3106.06 Protección
AB [EN] The degree to which burn severity influences the recovery of aboveground carbon density (ACD) of live pools in shrublands remains unclear. Multitemporal LiDAR data was used to evaluate ACD recovery three years after fire in shrubland ecosystems as a function of burn severity immediately after fire across an environmental and productivity gradient in the western Mediterranean Basin. Two large mixed-severity wildfires were assessed: an Atlantic site, dominated by resprouter shrubs and located at the most productive extreme of the gradient, and a Mediterranean site, dominated by obligate seeders and located at the less productive extreme. Initial assessment of burn severity was performed using the differenced Normalized Burn Ratio index computed from Landsat imagery. Thresholds for low and high burn severity categories were established using the Composite Burn Index (CBI). LiDAR canopy metrics were calibrated with field measurements of mean shrub height and cover at plot level in a post-fire situation. Pre-fire and post-fire ACD estimates, and their ratio (ACDr) to calculate carbon stock recovery, were computed from the predictions of LiDAR grid metrics at landscape level using shrubland allometric relationships. Overall, ACDr decreased both with high burn severity and low productivity, although the burn severity impact was not homogeneous within the gradient. In the Atlantic site, ACDr was similar under low and high burn severity, whereas it decreased with burn severity in the Mediterranean site. These results suggest that carbon cycling models could be biased by not accounting for both fire severity and species composition of shrublands under different environmental conditions
PB MDPI
LK https://hdl.handle.net/10612/20232
UL https://hdl.handle.net/10612/20232
NO Fernández-Guisuraga, J. M., Calvo, L., Fernandes, P. M. & Suárez-Seoane, S. (2022). Short-term recovery of the aboveground carbon stock in Iberian shrublands at the extremes of an environmental gradient and as a function of burn severity. Forests, 13(2) Article e145. https://doi.org/10.3390/F13020145
NO This article belongs to the Section Natural Hazards and Risk Management
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 15-jun-2024