Plants (4) végétation (3) Variation (3) Repeat photography (3) Green (3) vert (3) spectacle (2) saison (2) recherche (2) projet (2) physiologie (2) surveillance (2) écosystème (2) index (2) République populaire de Chine (2) Monitoring (2) Physiology (2) Indexes (2) Photographs (2) Technique (2) Water (2) Uncertainty (2) Research (2) Reflectance (2) Plant phenology (2) Physiology (2) Photographs (2) Phenology (2) Measurement (2) Learning and scholarship (2)