spectroscopie (2) qualité du sol (2) dégradation du sol (2) sol (2) satellite (2) recherche (2) surveillance (2) cartographie (cartes) (2) laboratoire (2) classification (2) substance chimique (2) ordre (2) Vienne (2) Monitoring (2) Development (2) Indexes (2) Near infrared reflectance spectroscopy (2) Threats (2) Spectrum analysis (2) Soils--Quality (2) Soils (2) Soil degradation (2) Research (2) Reflectance (2) Order (2) Libraries (2) Indexes (2) Forecasting (2) Evaluation (2) Classification (2)