Mapping burnt areas in Portugal.

Area of Study

Portugal

Participants

Dr. Kevin Tansey, Department of Geography, University of Leicester.

Dr. José Miguel Pereira, Mr. João Manuel das Neves Silva & Ms. Teresa Santos, Departamento de Engenharia Florestal, Instituto Superior de Agronomia, Lisbon, Portugal.

Abstract

The project aims to produce accurate, validated burnt area products of a region of Portugal that has seen a rise in vegetation fire activity in recent years culminating in the devastating fire events of the summer of 2003. These products will be derived from the UK-owned DMC satellite providing wide-swath coverage of the study area with a repeat-pass of every 4-5 days. The following objectives are realised:

  • To derive an algorithm based on the three bands of the DMC system (at green, red and near infrared wavelengths for mapping burnt areas.
  • To investigate the possibility of extracting information on the severity of burn, pre- and post-burn vegetation characteristics (e.g. biomass), or data on the type of fire that has occurred. This information is useful for computing the resultant gas emissions.
  • To conduct field experiments at the time of data acquisition to determine the accuracy of the algorithm for mapping burnt area and acquiring spectral measurements of burnt surfaces to help understand and interpret the satellite signal.