Integrating Remote Sensing,GIS and Prediction Models to Monitor the Deforestation and Erosion in Peten Reserve,Guatemala

This contribution provides a strategy for studying and modelling the deforestation and soil deterioration in the natural forest reserve of Peten,Guatemala,using a poor spatial database. A Multispectral Image Processing of Spot and TM Landsat data permits to understand the behaviour of the past land cover dynamics; a multi-temporal analysis of Normalized Difference Vegetation and Hydric Stress index,most informative RGB (according to statistical criteria) and Principal Components,points out the importance and the direction of environmental impacts. We gain from the Remote Sensing images new environmental criteria (distance from roads,oil pipe-line,DEM,etc.) which influence the spatial allocation of predicted land cover probabilities. We are comparing the results of different prospective approaches (Markov Chains,Multi Criteria Evaluation and Cellular Automata; Neural Networks) analysing the residues for improving the final model of future deforestation risk.

Disciplines : Environnement,Dommages et dégâts causés aux forêts
Mots-clés : remote sensing,change detection,GIS,predictive models,deforestation,peten,Guatemala
Type de document : texte
Type de ressource : étude de cas
Niveau : higher education,master,doctorat
Publics visés : learner
Auteurs ou éditeurs : Roberto Bruno,Martin Paegelow,Fernanda Renno,Nathalie Villa