title: Using optical remote sensing techniques to track the development of ozone-induced stress.
abstract: In this paper, a literature review about optical remote sensing (RS) of O(3) stress is presented. Studies on O(3)-induced effects on vegetation reflectance have been conducted since late '70s based on the analysis of optical RS data. Literature review reveals that traditional RS techniques were able to detect changes in leaf and canopy reflectance related to O(3)-induced stress when visible symptoms already occurred. Only recently, advanced RS techniques using hyperspectral sensors, demonstrated the feasibility of detecting the stress in its early phase by monitoring excess energy dissipation pathways such as chlorophyll fluorescence and non-photochemical quenching (NPQ). Steady-state fluorescence (Fs), measured by exploiting the Fraunhofer line depth principle and NPQ related xanthophyll-cycle, estimated through the photochemical reflectance index (PRI) responded to O(3) fumigation before visible symptoms occurred. This opens up new possibilities for the early detection of vegetation O(3) stress by means of hyperspectral RS.
authors.affiliation: Remote Sensing of Environmental Dynamics Laboratory, DISAT, University of Milan-Bicocca, Piazza della Scienza, 1, 20126 Milan, Italy. michele.meroni@unimib.it
authors.forename: Michele
authors.initials: M
authors.lastname: Meroni
authors.forename: Cinzia
authors.initials: C
authors.lastname: Panigada
authors.forename: Micol
authors.initials: M
authors.lastname: Rossini
authors.forename: Valentina
authors.initials: V
authors.lastname: Picchi
authors.forename: Sergio
authors.initials: S
authors.lastname: Cogliati
authors.forename: Roberto
authors.initials: R
authors.lastname: Colombo
mesh_terms: D000393:Air Pollutants / Q000032:analysis* / Q000378:metabolism; D002734:Chlorophyll / Q000737:chemistry; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D055096:Optical Devices; D010083:Oxidants, Photochemical / Q000032:analysis* / Q000378:metabolism; D018384:Oxidative Stress; D010126:Ozone / Q000032:analysis* / Q000378:metabolism; D010777:Photochemistry; D018515:Plant Leaves / Q000737:chemistry* / Q000378:metabolism; D013050:Spectrometry, Fluorescence / Q000379:methods; D013686:Telemetry / Q000379:methods; D024341:Xanthophylls / Q000737:chemistry
chemical_list: D000393:Air Pollutants; D010083:Oxidants, Photochemical; D024341:Xanthophylls; D002734:Chlorophyll; D010126:Ozone