Abstract
The aim of this research Project is to develop a methodology to evaluate forest biomass for calculating energy production and resources cartography by means of the use of GIS (Geographic Information System) in the Urdaibai (Biscay). The project tries to determine the potential, available, and usable as energy resource, residual forest biomass, after the treatments of forest species in the area. The first part of the project aims at validating the ground map of the Urdaibai (Spain) obtained in the last Inventario Forestal Nacional (IFN3). In order to complete this part of the project, it is necessary to carry out a study on the ground composition in the area by sampling and subsequent laboratory analysis. In this inventory phase, the use of U.S.L.E/R.U.S.LE (Universal Soil Loss Equation) for calculating soil loss is suggested, since this equation is one of the main tools able to estimate the mean erosive rate of a territory. By means of this empiric model, it will be possible to determine the current soil erosion rate and its potential evolution due to different forest treatments that are characteristic of the most representative forest species in the area.
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