Angular chlorophyll indices estimates derived from ground-based diurnal course data and multiangular CHRIS-PROBA data: two case studies

0090736 - ÚVGZ 2011 BE eng C - Conference Paper (international conference)
Verrelst, J. - Ač, Alexander - Malenovský, Zbyněk - Hanuš, Jan - Marek, Michal V. - Schaepman, M.E.
Angular chlorophyll indices estimates derived from ground-based diurnal course data and multiangular CHRIS-PROBA data: two case studies.
Proceedings 5EARSeL SIG IS Workshop "Imaging Spectroscopy: innovation in environmental research". Brugge: EARSeL, 2007 - (Cools, J.; Reusen, I.), s. 1-15
[EARSeL SIG IS Workshop: Imaging spectroscopy: innovation in environmental research /5./. Brugge (BE), 23.04.2007-25.04.2007]
R&D Projects: GA MŠMT 2B06068
Institutional research plan: CEZ:AV0Z60870520
Keywords : imaging spectroscopy * diurnal * vegetation index
Subject RIV: GK - Forestry

At leaf and plant level chlorophyll indices have shown strong correlations with chlorophyll con-tent and photosynthesis-related processes. However, at canopy level additional abiotic and biotic factors confound the fidelity of these indices. For instance, the Photochemical Reflectance Index (PRI) is known to be sensitive to viewing angles and canopy structure. In this paper we present case studies of two natural canopies at different scales where the influence of sun-target-sensor geometry and canopy structure is inter-compared for a range of chlorophyll indices.
Permanent Link: http://hdl.handle.net/11104/0151525