EGU21-7936, updated on 04 Mar 2021
https://doi.org/10.5194/egusphere-egu21-7936
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Post-fire soil erosion risk map in Portugal: prediction and validation

Joana Parente1,2, Ana Lopes1, Antonio Girona-García1, Marta Basso1, and Diana Vieira1
Joana Parente et al.
  • 1Centre for Environmental and Marine Studies, CESAM, University of Aveiro, Aveiro, Portugal (joaparente@gmail.com)
  • 2Centre for Research and Technology of Agro-Environment and Biological Sciences, CITAB, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal

Wildfires are a recurrent and increasing threat in Mainland Portugal, where over 4,500 thousand hectares of forests and shrublands have burned in the last 38 years. Landscapes affected by those wildfires have suffered an increase of soil erosion processes, which can negatively affect soil carbon storage, reduce fertility, forest productivity, and become a source of pollutants. Taking these in mind, the main objective of this study is to offer a ground base of post-fire soil erosion risk determination for Mainland Portugal, which will provide a set of tools to help forest managers in the post-fire decision-making, and therefore adequately implement mitigation measures to prevent such impacts.

Post-fire soil erosion was assessed by the applying the semi-empirical soil erosion model Revised Morgan–Morgan–Finney(Morgan, 2001), to the entire Portuguese forest and shrubland areas according to distinct scenarios (burn severity, climate). This study benefits from the use of several reliable official datasets of soil characteristics, as also from several model calibrations and validation with field data collected in the last 10 years for the 1st and 2nd post-fire years. The obtained soil erosion map identifies areas with higher post-fire erosion risk in the past and for future climate extremes. Findings of this study will be a valuable tool for forest managers to minimize the economic and environmental losses of vegetation fires in Portugal.

Acknowledgements

This work was supported and conducted in the framework of the FEMME project (PCIF/MPG/0019/2017) funded by FCT - Portuguese Foundation for Science and Technology. The study was also supported by: i) National Funds by FCT - Portuguese Foundation for Science and Technology, under the project UIDB/04033/2020; and, ii) National Funds by FCT - Portuguese Foundation for Science and Technology, under the project UID/AMB/50017/2019. Data were provided by the European Forest Fire Information System – EFFIS (http://effis.jrc.ec.europa.eu) of the European Commission Joint Research Centre.

How to cite: Parente, J., Lopes, A., Girona-García, A., Basso, M., and Vieira, D.: Post-fire soil erosion risk map in Portugal: prediction and validation, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-7936, https://doi.org/10.5194/egusphere-egu21-7936, 2021.

Corresponding presentation materials formerly uploaded have been withdrawn.