4 documents found, page 1 of 1
Impact of fire severity on forest structure and biomass stocks using NASA GEDI ...
Guerra-Hernández, Juan; Pereira, José M.C.; Stovall, Atticus; Pascual, AdrianWildfires have been progressively shrinking the C sink capacity of forest accelerating climate change effects on forest biodiversity, especially where megafires are recurrent and of increased frequency such as in the Medi- terranean. Data from The Global Ecosystem Dynamics Investigation (GEDI) mission can inform on changes on forest structure to inform on fire impacts on vegetation. In this study, we assessed t...
Global-scale statistical modelling of the radiative power released by vegetatio...
DaCamara, Carlos C.; Libonati, Renata; Nunes, Sílvia A.; Bermudez, P. de Zea; Pereira, José M.C.We present a statistical model with 8 parameters that combines three components, namely a truncated lognormal distribution central body with a lower and an upper tail, both consisting of Generalized Pareto (GP) distributions. We fit the model to a dataset of more than 85 million records of the logarithm of fire radiative power (FRP) at the global scale, as derived from satellite observations covering a 19-year ...
Combining landscape fire simulations with stand-level growth simulations to ass...
Barreiro, Susana; Benali, Akli; Rua, João C.P.; Tomé, Margarida; Santos, José L.; Pereira, José M.C.The wildfire regime in Portugal has been responsible for millions of hectares of burnt area, and Alvares parish is no exception. In 2017, a severe wildfire burnt 60% of its area. Land abandonment has been increasing since the mid 20th century, and a large fraction of the forest area belongs to quasi-absent landowners. This has given rise to large, almost unbroken expanses of undermanaged forests that, in combin...
Exploring the spatial patterns of fire density in Southern Europe using Geograp...
Oliveira, Sandra; Pereira, José M.C.; San-Miguel-Ayanz, Jesús; Lourenço, Luciano FernandesThe spatial patterns of fire occurrence were analyzed in two regions of Southern Europe, focusing on the long-term factors that influence fire distribution. The relationship between fire occurrence and the physical and anthropogenic variables collected was investigated with Geographically Weighted Regression (GWR) and the results were compared with Ordinary Least Squares (OLS). Local patterns of the significant...